JP7278173B2 - Map display device, method and program - Google Patents

Description

The present invention relates to technology for displaying maps.

Patent Literature 1 discloses a technique for providing a user with various types of ground information on a desired position on an electronic map and its surrounding area through a simple operation by the user.

Japanese Unexamined Patent Application Publication No. 2010-54702

An object of the present invention is to improve the visibility of a map.

A map display device according to an aspect of the present invention includes:
a storage means for storing a map;
Acquisition means for acquiring earthquake information including at least the maximum seismic intensity;
display control means for superimposing the earthquake information on the map and displaying it on a display means;
The display control means may vary the center position of the map displayed on the display means according to the number of maximum seismic intensities included in the earthquake information.
In addition, the present invention can also be implemented as the following modes.
A map display device according to an aspect of the present invention includes storage means for storing a map, acquisition means for acquiring earthquake information including at least a maximum seismic intensity, and display means for superimposing the earthquake information on the map. display control means, wherein the display control means changes the center position of the map displayed on the display means according to the number of maximum seismic intensities included in the earthquake information, and the maximum seismic intensity is In one case, the display position of the maximum seismic intensity is set to the center position, and if there are multiple maximum seismic intensities, a polygon is created that includes the display positions of each maximum seismic intensity, and the barycentric position of the polygon is set to the center position. is set to

It is a figure which shows the structural example of a map display system. It is a figure which shows the data structural example of a map information storage part. It is a figure which shows the structural example of a transmittance|permeability table. It is a figure which shows the processing operation example of a map display apparatus. FIG. 4 is a diagram illustrating an example of determining the center position of a map and the display range of the map; It is a figure which shows the processing operation example of a map display apparatus. FIG. 4 is a diagram showing a configuration example of a map image displayed on a user terminal; It is a figure explaining the modification which determines the center position of a map.

Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. It should be noted that, in each figure, the same reference numerals have the same or similar configurations.

<Configuration example of map display system>
First, a configuration example of a map display system according to this embodiment will be described with reference to FIG. FIG. 1 is a diagram showing a configuration example of a map display system according to this embodiment.

As shown in FIG. 1, the map display system according to this embodiment is configured by connecting a user terminal 1, a map display device 2, and an information providing device 3 via a network NW. Any form of communication, whether wired or wireless, can be applied to the network NW.

The information providing device 3 transmits disaster information such as an earthquake to the map display device 2 , and the map display device 2 stores the disaster information in the disaster information storage unit 223 . The disaster information includes a value indicating the magnitude of the disaster. For example, if the disaster information is an earthquake, the maximum seismic intensity is included.

The user terminal 1 transmits a disaster information display request to the map display device 2 . The map display device 2 acquires disaster information to be displayed from the disaster information storage unit 223 when receiving a display request for disaster information from the user terminal 1 . The map display device 2 adjusts the center position of the map to be displayed on the display unit of the user terminal 1 according to the number of values that indicate the degree of the greatest magnitude of the disaster among the values included in the disaster information to be displayed. be different. For example, if the disaster information to be displayed is an earthquake, the map displayed on the display unit of the user terminal 1 displays the point where the maximum seismic intensity occurred. Therefore, when the maximum seismic intensity to be displayed on the map is one, the display position of the maximum seismic intensity is set to the central position of the map to be displayed. Also, if there are multiple maximum seismic intensities to be displayed on the map, a polygon containing the display positions of the respective maximum seismic intensities is created, and the barycentric position of the polygon is set as the central position of the map to be displayed. As a result, even if there are multiple points of maximum seismic intensity to be displayed on the map, the center position of the map to be displayed is set based on each point of maximum seismic intensity, and the maximum seismic intensity is displayed on the display unit of the user terminal 1 A map containing information on multiple points where seismic intensity occurred can be displayed. As a result, the visibility of the map can be improved. A configuration example of each device constituting the map display system of the present embodiment will be described below.

<Configuration example of information providing device 3>
The information providing device 3 is a device that provides the map display device 2 with disaster information such as tsunami, earthquake, typhoon, landslide disaster, tornado, and river flooding. The disaster information may be information provided by the Japan Meteorological Agency, a disaster prevention information sharing system (also called SIP4D), or the like. The information providing device 3 may be a device such as a server. The information providing device 3 includes a control section 31 and a storage section 32 .

The control section 31 controls each section of the information providing device 3 . The storage unit 32 stores various information. The information providing device 3 of this embodiment stores disaster information in the storage unit 32 and provides the disaster information stored in the storage unit 32 to the map display device 2 . In the case of an earthquake, for example, the time of occurrence of the earthquake, epicenter, depth, scale, latitude/longitude and place name of the epicenter, maximum seismic intensity, latitude/longitude and place name of the maximum seismic intensity, seismic intensity of each region's seismic observation points, etc. Contains information.

<Configuration example of user terminal 1>
A user terminal 1 is a terminal used by a user. The user terminal 1 may be a device such as a smart phone or a PC. The user terminal 1 includes a control section 11, a storage section 12, an input/output section 13, and a position information acquisition section .

The control unit 11 controls each unit of the user terminal 1 . The control unit 11 provides the user of the user terminal 1 with map information. For example, the control unit 11 designates parameters such as the type of disaster information to be displayed on the map, transmits a map display request to the map display device 2, acquires information on the map to be displayed from the map display device 2, A map is displayed on the user terminal 1 via the input/output unit 13 . As a trigger for the control unit 11 to send a map display request to the map display device 2, for example, when the user terminal 1 receives a display switching operation of the type of disaster information, , when the user terminal 1 receives an operation requesting display of disaster information to be displayed.

The storage unit 12 stores various information used by the user terminal 1 . The input/output unit 13 is various interfaces used for inputting/outputting information between the user terminal 1 and the user. Examples of the input/output unit 13 include a touch panel, operation buttons, and a microphone as input units, and a touch panel, liquid crystal panel, and speaker as output units. The input/output unit 13 functions as a display unit that displays a map. The location information acquisition unit 14 acquires the current location of the user terminal 1 . The location information acquisition unit 14, for example, receives radio waves from GPS (Global Positioning System) satellites and information from base stations, detects the current location of the user terminal 1, and acquires data of the detected current location (for example, data such as latitude, longitude, and height). Height data may be acquired using an air pressure sensor or the like. The position information acquisition unit 14 may perform self-position estimation using pedestrian dead reckoning or the like.

<Configuration example of the map display device 2>
The map display device 2 is a device that provides the user terminal 1 with map information. The map display device 2 may be a device such as a server. The map display device 2 includes a control section 21 and a storage section 22 .

The control unit 21 functions as an information acquisition unit 211 , an information extraction unit 212 , an information reception unit 213 and a map display control unit 214 in addition to controlling each unit of the map display device 2 .

The information acquisition unit 211 acquires disaster information and the like from the information providing device 3 . The information acquisition unit 211 stores the acquired disaster information for each disaster information type in the disaster information storage unit 223, which will be described later. The map display device 2 of this embodiment can provide the user terminal 1 with various types of disaster information stored in the disaster information storage unit 223 .

Based on the map data stored in the map information storage unit 221, which will be described later, the information extraction unit 212 selects annotation information to be displayed preferentially over the disaster information displayed on the map from annotation information included in the map. to extract Then, the information extraction unit 212 creates an annotation layer composed only of the extracted annotation information. Note information to be extracted may be varied depending on the type of disaster information. For example, if the type of disaster information is an earthquake or the like, note information about prefecture names and city/ward/town/village names is extracted. If the type of disaster information is flooding of a river, etc., note information about the river name is extracted. As a result, annotation information related to disaster information can be displayed on the map preferentially over the disaster information. The information extraction unit 212 also deletes the extracted note information from the note information included in the map, and creates a background map (also referred to as a base map) that does not include the extracted note information. The information extraction unit 212 stores the created background map and annotation layer in the map information storage unit 221 in association with the display scale and the type of disaster information. The disaster information type is information for identifying the type of disaster information.

The information reception unit 213 receives a map display request or the like from the user terminal 1 . The map display request includes information such as the type of disaster information to be displayed on the map.

The map display control unit 214 identifies the type of disaster information included in the map display request received by the information receiving unit 213 . The map display control unit 214 also specifies the display range of the map provided to the user terminal 1 based on the disaster information to be displayed. The specified display range of the map may be an area larger than the display range of the user terminal 1 by a certain range (for example, display range+buffer, etc.). As a result, even if the map displayed on the user terminal 1 is moved, the map can be displayed without reacquisition. Also, the map display control unit 214 determines the display scale of the map to be provided to the user terminal 1 based on the disaster information to be displayed.

Further, the map display control unit 214 specifies the transmittance corresponding to the determined display scale from the transmittance table stored in the transmittance information storage unit 224, which will be described later, and displays the specified transmittance. Set to target disaster information. The map display control unit 214 also sets a display color for the disaster information according to the type of disaster information to be displayed and the content of the disaster information. For example, if the type of disaster information is an earthquake, set as follows.

When the seismic intensity is 1, the display color is set to light blue. If the seismic intensity is 2, set the display color to green. When the seismic intensity is 3, the display color is set to yellow. If the seismic intensity is 4, set the display color to orange. When the seismic intensity is 5, the display color is set to red. The above setting is just an example, and the seismic intensity information can be further subdivided (for example, further subdivided into seismic intensity 5 lower, seismic intensity 5 upper, etc.), and an arbitrary color can be set for each subdivided seismic intensity. good too. Thereby, the map display control unit 214 can set the display color according to the magnitude of each seismic intensity.

Further, the map display control unit 214 acquires the background map and the note layer corresponding to the determined display scale and disaster information type from the background map and the note layer stored in the map information storage unit 221 . Then, the display control unit 215 displays the information of the map image in which the disaster information having the set transmittance and display color exists on the acquired background map, and the acquired note layer exists on the disaster information. It transmits to the user terminal 1 and displays it on the user terminal 1. - 特許庁

The storage unit 22 stores various information used by the map display device 2 . The storage unit 22 includes a map information storage unit 221 , a route information storage unit 222 , a disaster information storage unit 223 and a transmittance information storage unit 224 .

As shown in FIG. 2, the map information storage unit 221 stores map data for display in association with the display scale. For example, map data of 1/1500, 1/3000, 1/8000, 1/21000, 1/75000, 1/150,000, 1/300,000, 1/900,000, wide area (e.g., 1/1,500,000), It is stored in association with the display scale of the whole country (for example, 1/7,800,000). The map data includes information such as topography, buildings, roads, facilities, notes, etc. necessary for constructing the background map, and the information differs for each display scale. For example, if the display scale is small, only main roads such as highways and national highways and annotations attached to the roads are included in the map data, and if the display scale is medium, In addition to the above, prefectural roads, major municipal roads, and notes attached to the roads are included in the map data, and if the display scale is large, in addition to the above, notes attached to minor streets and the roads are included in the map data. include.

Further, as shown in FIG. 2, the map information storage unit 221 stores the background map and the annotation layer created by the information extraction unit 212 described above in association with the display scale and the disaster information type.

The route information storage unit 222 stores road network data. The road network data includes nodes and links connecting the nodes. Each link is associated with the distance of the road represented by the link and the average travel time (also referred to as travel time) as a link cost. Road network data is stored according to means of transportation (for example, walking, car, bicycle, etc.).

The disaster information storage unit 223 stores various types of disaster information acquired by the information acquisition unit 211 .

The transmittance information storage unit 224 stores a transmittance table. As shown in FIG. 3, the transmittance table is a table in which transmittance is registered for each display scale, and the transmittance registered for each display scale is set to increase as the display scale increases. ing.

<Processing operation example of the map display device 2>
Next, an example of processing operations performed by the map display device 2 will be described with reference to FIG. FIG. 4 explains an example of a processing operation when displaying earthquake information including a point where the maximum seismic intensity occurred on a map.

When the map display device 2 receives an earthquake information display request from the user terminal 1 (step S1/Yes), the map display device 2 acquires the earthquake information to be displayed from the disaster information storage unit 223 (step S2). For example, the user terminal 1 selects earthquake information to be displayed from the list of earthquake information stored in the disaster information storage unit 223 of the map display device 2, and sends a display request for the earthquake information to the map display device 2. Send to In this case, the map display device 2 acquires the earthquake information to be displayed received from the user terminal 1 from the disaster information storage unit 223 . Note that the user terminal 1 may transmit a display request for earthquake information to the map display device 2 without selecting the earthquake information to be displayed. In this case, the map display device 2 acquires the latest earthquake information stored in the disaster information storage unit 223 .

The map display device 2 determines whether or not there is one maximum seismic intensity included in the earthquake information to be displayed (step S3). If there is only one maximum seismic intensity (step S3/Yes), the display position of the maximum seismic intensity is set to be the center of the map to be displayed (step S4). For example, it is assumed that seismic intensity information (for example, seismic intensity 1, seismic intensity 2, etc.) is divided into 250m mesh units and stored. In this case, based on the information about the seismic intensity in units of 250m mesh, the mesh in which the information of the maximum seismic intensity exists is specified, and it is determined whether or not there is only one mesh. If there is only one mesh with maximum seismic intensity information, set the center coordinates of that mesh to be the center of the map to be displayed. As a result, for example, if the maximum seismic intensity included in the earthquake information to be displayed is seismic intensity 5 and there is only one mesh with seismic intensity 5, the display position of the mesh with seismic intensity 5 will be centered on the map to be displayed. Can be set.

Next, the map display device 2 creates a map image in which earthquake information is superimposed on a map of a predetermined display scale at the center position set in step S4, and transmits the information of the map image to the user terminal. 1 and displayed on the display unit of the user terminal 1 (step S5). As a result, when the earthquake information to be displayed contains only one maximum seismic intensity, the map display device 2 outputs to the user terminal 1 a map centered on the display position of the maximum seismic intensity. It can be displayed on the display unit.

In step S3, if there are multiple maximum seismic intensities included in the earthquake information to be displayed (step S3/No), the map display device 2 creates a polygon that includes the display position of each maximum seismic intensity, and displays the polygon is set at the center of the map (step S6). For example, as shown in FIG. 5, it is assumed that there are three meshes in which the maximum seismic intensity information exists in the seismic intensity information managed in units of 250m mesh. In FIG. 5, three meshes denoted by reference numeral 100 are meshes in which information on the maximum seismic intensity exists. In this case, a polygon 200 connecting the center coordinates 101, 102 and 103 of each mesh 100 is created. Then, the barycentric position 201 of the created polygon 200 is set at the center of the map. The barycentric position of the polygon 200 can be calculated using a known calculation method. As a result, for example, if the maximum seismic intensity included in the earthquake information to be displayed is seismic intensity 5, and there are multiple meshes of seismic intensity 5, the display target is displayed based on the display position of each mesh of seismic intensity 5. The center of the map can be determined.

Next, the map display device 2 calculates a rectangle that includes the polygon 200, and determines a display scale that allows the map included in the calculated rectangle to be displayed on the display unit of the user terminal 1 (step S7). For example, as shown in FIG. 5, a rectangle 300 that includes the polygon 200 is calculated, the lower left coordinate 301 and the upper right coordinate 302 of the calculated rectangle 300 are calculated, and based on the calculated coordinate positions 301 and 302, the rectangle A display scale that allows the map within 300 to be displayed on the display unit of the user terminal 1 is determined. Thereby, the display scale at which the map within the rectangle 300 can be displayed can be determined. In FIG. 5, the rectangle 300 encompasses the outline of each mesh 100 displaying the maximum seismic intensity. However, a rectangle including the center coordinates 101, 102, 103 of each mesh 100 displaying the maximum seismic intensity may be calculated. Also, in FIG. 5, the display scale at which the map within the rectangle 300 can be displayed on the display unit of the user terminal 1 is determined. It suffices if it is possible to determine a display scale that can be displayed. For example, as shown in FIG. A display scale that can be displayed on one display unit may be determined. If there are multiple display scales at which the map contained in the rectangle can be displayed on the display unit of the user terminal 1, the display scale with the largest display scale is selected from among the plurality of display scales. good too. As a result, the map included in the rectangle can be displayed at the highest visibility.

Next, the map display device 2 creates a map image in which the earthquake information is superimposed on the map of the center position set in step S6 and the display scale determined in step S7, and the information of the map image is provided to the user. It is transmitted to the terminal 1 and displayed on the display section of the user terminal 1 (step S8). As a result, even if there are a plurality of points with the maximum seismic intensity included in the earthquake information for which a display request has been received from the user terminal 1, the map display device 2 can use the The center position of the map to be displayed on the display section of the user terminal 1 can be determined, and the map of the determined center position can be output to the user terminal 1 and displayed on the display section of the user terminal 1 .

Next, another processing operation example performed by the map display device 2 will be described with reference to FIG. FIG. 6 is a diagram showing an example of a processing operation when displaying disaster information on a map.

When the map display device 2 receives a request to display disaster information from the user terminal 1 (step A1/Yes), the map display device 2 stores the disaster information to be displayed in the disaster information storage unit based on the type of disaster information included in the display request. 222 (step A2). The disaster information includes a value indicating the magnitude of the disaster. For example, in the case of the earthquake mentioned above, the maximum seismic intensity will be included.

The map display device 2 determines whether or not there is one value (maximum value) indicating the degree of the greatest degree of disaster among the values included in the disaster information to be displayed (step A3). If there is one maximum value (step A3/Yes), the display position of the maximum value is set to the center position of the map (step A4). Next, the display scale of the map to be displayed on the display unit of the user terminal 1 is determined (step A5). For example, based on the display scale predetermined for each disaster information type in the map display device 2, the display scale corresponding to the disaster information to be displayed is determined.

Also, in step A3, if there are multiple values indicating the degree of the greatest degree of disaster (step A3/No), a polygon that includes the display position of each maximum value is created, and the barycentric position of that polygon is determined. Set to the center position of the map (step A6).

Next, the map display device 2 calculates a rectangle containing the polygon, and determines a display scale at which the map within the calculated rectangle can be displayed on the display unit of the user terminal 1 (step A7).

Next, the map display device 2 specifies the transmittance corresponding to the determined display scale from the transmittance table stored in the transmittance information storage unit 224, and applies the specified transmittance to the display target. Set as disaster information (step A8). For example, if the determined display scale is 1/3000, refer to FIG. set to As a result, disaster information will be displayed on the map with a transparency rate of 65%.

Next, based on the map data stored in the map information storage unit 221, the map display device 2 selects from among the annotation information included in the map of the display scale determined above, the disaster information to be displayed on the map. Extract note information to be displayed preferentially. Then, an annotation layer composed only of the extracted annotation information is created (step A9).

Further, the map display device 2 creates a background map from which the extracted note information is deleted from the note information included in the map of the determined display scale (step A10).

Next, the map display device 2 displays the information of the map image in which the disaster information with the set transmittance exists on the background map created above and the note layer created above exists on the disaster information. It is transmitted to the terminal 1 and displayed on the user terminal 1 (step A11).

The map display device 2 can display on the user terminal 1 a map image configured in the order of background map→disaster information→annotation layer as shown in FIG. 7 by the process of step A11.

<Operations and effects of the map display system of the present embodiment>
The map display device 2 of the present embodiment displays the center position of the map displaying the disaster information according to the number of maximum values (also referred to as values indicating the degree of the greatest magnitude of the disaster) included in the disaster information to be displayed. be different. Specifically, when there is one maximum value, the display position of the maximum value is set to the center position of the map. Also, if there are multiple maximum values, a polygon is created that includes the display positions of the respective maximum values, and the barycentric position of that polygon is set as the center position of the map. As a result, when the disaster information including the information of the point with the largest disaster (also called the point of maximum value) is displayed on the map, the suitable center position of the map is determined according to the number of maximum values. be able to. As a result, the visibility of the map can be improved.

For example, in this embodiment, when the disaster information to be displayed is an earthquake, the map displayed on the display unit of the user terminal 1 displays the point where the maximum seismic intensity occurred. Therefore, when the maximum seismic intensity to be displayed on the map is one, the display position of the maximum seismic intensity is set to the central position of the map displayed on the display section of the user terminal 1 . If there are multiple maximum seismic intensities to be displayed on the map, create a polygon that includes the display position of each maximum seismic intensity, and position the center of gravity of the polygon at the center of the map displayed on the display unit of the user terminal 1. position. As a result, even if there are multiple points of maximum seismic intensity to be displayed on the map, the center position of the map to be displayed is set based on each point of maximum seismic intensity, and the maximum seismic intensity is displayed on the display unit of the user terminal 1 A map containing information on multiple points where seismic intensity occurred can be displayed.

Further, in the present embodiment, annotation information (also referred to as an annotation layer) corresponding to the display scale of the map displayed on the user terminal 1 is displayed on the map preferentially over disaster information. As a result, the map display device 2 of the present embodiment can improve the visibility of note information even when disaster information is displayed on the map.

Further, the map display device 2 of the present embodiment displays disaster information on the map with a transmittance corresponding to the display scale of the map displayed on the user terminal 1, and displays annotation information on the disaster information. . As a result, the map display device 2 of this embodiment can improve the visibility of both the disaster information and the note information. For example, when a wide-area map is displayed with a reduced map scale, specific note information is displayed on top of disaster information with clear colors, increasing the visibility of both disaster information and note information. be able to. In addition, when a detailed map is displayed by enlarging the display scale of the map, specific annotation information is displayed on top of the disaster information displayed over a wide area on the map. can enhance sexuality.

<Modification>
The above-described embodiments are preferred embodiments of the present invention, and the scope of the present invention is not limited only to the above-described embodiments, and various modifications are made within the scope of the present invention. can be implemented.

(Modification 1)
In the above-described embodiment, as shown in FIG. 5, a polygon 200 is created that includes the display positions 101, 102, and 103 of the maximum values included in the disaster information to be displayed, and the barycentric position of the polygon 200 is mapped. is set at the center of However, as shown in FIG. 8, a rectangle 300 that includes the polygon 200 may be calculated, and an intersection 400 at which diagonal lines of the rectangle 300 intersect may be set as the center position of the map. In this case also, the disaster information can be displayed by determining a suitable center position of the map according to the number of maximum values included in the disaster information.

(Modification 2)
In the above-described embodiment, the center position of the map displaying the disaster information is varied according to the number of maximum values included in the disaster information to be displayed. However, if the disaster information is an earthquake, since the information of the epicenter is also included, the center position of the map may be set considering not only the display position of the maximum seismic intensity but also the display position of the epicenter. For example, if the display position of the epicenter is included in the polygon 200 connecting the central coordinates 101, 102, and 103 of the maximum seismic intensity shown in FIG. Set the center of gravity position to the center position of the map. If the display position of the epicenter is not included in the polygon 200 connecting the central coordinates 101, 102, and 103 of the maximum seismic intensity, a new polygon including the display position of the epicenter is created, and the polygon Set the center of gravity of the map to the center of the map. This makes it possible to set the center position of the map in consideration of the display position of the epicenter.

(Modification 3)
In the above-described embodiment, the map display device 2 refers to the transmittance table shown in FIG. 3 in which the transmittance corresponding to the display scale is registered, identifies the transmittance corresponding to the display scale of the map to be displayed, and determines the transmittance corresponding to the display scale. The specified transmittance is set in the disaster information. However, a transmittance table in which transmittances corresponding to display scales and types of disaster information are registered may be used. As a result, the map display device 2 can set not only the display scale of the map but also different transmittances for each type of disaster information.

(Modification 4)
In the above-described embodiment, annotation information (also referred to as an annotation layer) corresponding to the display scale of the map displayed on the user terminal 1 is displayed on the map preferentially over disaster information. However, the information to be displayed with priority over the disaster information may be not only the annotation information but also various types of drawing information constituting the map, such as the boundaries of administrative divisions, the shape of roads, and the shape of rivers. In this case, the drawing information to be displayed with priority over the disaster information may be changed according to the disaster information. For example, if the disaster information is an earthquake or the like, the boundaries and names of administrative divisions are displayed with priority over the disaster information. Moreover, when the disaster information is flooding of a river, the shape of the river, the name of the river, etc. are preferentially displayed over the disaster information. As a result, drawing information that the user wants to grasp together with disaster information on the map can be displayed on the map preferentially over the disaster information.

(Modification 5)
The control operation of each unit constituting the user terminal 1, the map display device 2, and the information providing device 3 of this embodiment described above can be executed using hardware, software, or a composite configuration of both. is.

When processing is performed using software, a program recording a processing sequence can be installed in a memory within a computer incorporated in dedicated hardware and executed. Alternatively, it can be installed and executed in a memory within a general-purpose computer capable of executing various types of processing.

For example, the program can be recorded in advance in a hard disk or ROM as a recording medium. Alternatively, the program can be temporarily or permanently recorded on a removable recording medium. Such removable recording media can be provided as so-called package software. Removable recording media include various recording media such as magnetic disks and semiconductor memories.

The program is installed in the computer from the removable recording medium as described above. It will also be wirelessly transferred from the download site to your computer. In addition, it will be transferred to the computer by wire through the network.

As for the form of the program, it is possible to use it from a server on the network such as the cloud. There is also a form in which only part of the program is transferred to the computer for use.

(Modification 6)
Each unit constituting the map display system of the above-described embodiment is not limited to executing processes in chronological order according to the processing operations described in the above-described embodiment. For example, it is also possible to construct so as to execute the processing in parallel or individually, depending on the processing capacity of the device that executes the processing, or as necessary. Further, each function of the map display system of the above-described embodiment may be realized by cooperation of a plurality of information processing devices, and at least part of the information stored in the above-described storage units 22 and 32 may be It may be stored in the device's internal/external storage, or may be built on the cloud, for example.

(Modification 7)
Aspects described in all or part of the above embodiments are improvement of map visibility, improvement of processing speed, improvement of processing accuracy, improvement of usability, improvement of functions using data, or provision of appropriate functions. Appropriate data such as other functional improvements or provision of appropriate functions, reduction of data and/or program capacity, miniaturization of devices and/or systems, provision of programs, recording media, devices and/or systems, and data , reduction of production/manufacturing costs of programs, devices or systems, facilitation of production/manufacturing, optimization of production/manufacturing of data, programs, recording media, devices and/or systems such as shortening of production/manufacturing time or solve one problem.

1 user terminal 11 control unit 12 storage unit 13 input/output unit 14 location information acquisition unit 2 map display device 21 control unit 211 information acquisition unit 212 information extraction unit 213 information reception unit 214 map display control unit 22 storage unit 221 map information storage Unit 222 Route information storage unit 223 Disaster information storage unit 224 Transmittance information storage unit 3 Information providing device 31 Control unit 32 Storage unit NW network

Claims (5)

a storage means for storing a map;
Acquisition means for acquiring earthquake information including at least the maximum seismic intensity;
display control means for superimposing the earthquake information on the map and displaying it on a display means;
The display control means is
The center position of the map displayed on the display means is varied according to the number of maximum seismic intensities included in the earthquake information,
If there is only one maximum seismic intensity, set the display position of the maximum seismic intensity to the center position, and if there are multiple maximum seismic intensities, create a polygon that includes the display positions of each maximum seismic intensity, and set the barycentric position of the polygon. A map display device characterized in that it is set at the center position . 2. The display control means according to claim 1 , wherein said display control means calculates a rectangle containing said polygon, and displays a map within said rectangle on said display means in a map of a scale that can be displayed on said display means. Map display device. a storage means for storing a map;
Acquisition means for acquiring disaster information including at least a value indicating the magnitude of the disaster;
display control means for displaying the disaster information superimposed on the map on a display means;
The display control means is
The center position of the map to be displayed on the display means according to the number of maximum values among the values included in the disaster information, when the value indicating the degree of the greatest degree of disaster is the maximum value. are different, and
If there is one maximum value, set the display position of the maximum value to the center position. If there are multiple maximum values, create a polygon that includes the display positions of each maximum value, and set the barycentric position of the polygon. A map display device characterized in that it is set at the center position . A method performed by a map display device, comprising:
an acquiring step of acquiring earthquake information including at least the maximum seismic intensity;
a display control step of superimposing the earthquake information on a map and displaying it on a display means;
The display control step includes:
The center position of the map displayed on the display means is varied according to the number of maximum seismic intensities included in the earthquake information,
If there is only one maximum seismic intensity, set the display position of the maximum seismic intensity to the center position, and if there are multiple maximum seismic intensities, create a polygon that includes the display positions of each maximum seismic intensity, and set the barycentric position of the polygon. setting to the center position . A program to be executed by a computer of a map display device,
Acquisition processing for acquiring earthquake information including at least the maximum seismic intensity;
causing the computer to execute a display control process for superimposing the earthquake information on a map and displaying it on a display means;
The display control process includes
The center position of the map displayed on the display means is varied according to the number of maximum seismic intensities included in the earthquake information,
If there is only one maximum seismic intensity, set the display position of the maximum seismic intensity to the center position, and if there are multiple maximum seismic intensities, create a polygon that includes the display positions of each maximum seismic intensity, and set the barycentric position of the polygon. A program characterized in that it is set to the center position .

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