CN111125281B - Map self-adaptive adjusting method and system, computer equipment and medium - Google Patents
Map self-adaptive adjusting method and system, computer equipment and medium Download PDFInfo
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Abstract
The application relates to a map self-adaptive adjusting method and system, computer equipment and media, wherein the method comprises the following steps: acquiring longitude and latitude ranges of a map visual interface and the current central point position of a map; calculating the latitude and longitude range of each quadrant by taking the central point of the map as an origin; when the self-adaptive range of the map is not specified, the default range is the visual interface of the whole map; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position; calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position, and calculating a map level suitable for a visual angle; and calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints. The invention can appoint the adaptive range of the map, relatively and smoothly adjust the grade and the central point of the electronic map in a gradual change mode, realize the smooth change of the electronic map, ensure that the visual effect is better when a user checks the electronic map, and provide convenience for the user to use.
Description
Technical Field
The present application relates to the field of map processing technologies, and in particular, to a map adaptive adjustment method and system, a computer device, and a readable storage medium.
Background
With the wide application of GIS in the fields of decision assistance, smart cities and the like, the map self-adaptive adjustment is frequently used in each professional system. As a basic practical function, the adaptive function of the current map is mainly realized by adjusting the level and the center point of the map according to the existing point data or route data, so that the map elements are fully displayed in the whole browser interface or the whole map visual interface.
The map self-adaptive function in the prior art can not meet the special requirements, for example, in a general map visualization system interface, a map is tiled to serve as a base map, chart statistical data occupies three quarters, and only one quarter of a browser interface or a map visualization interface is provided to show map points. In the prior art, the map is difficult to realize self-adaption in a specified range, and map elements cannot be presented in a specified area of a better visual map hierarchy according to requirements, so that the map is inconvenient for users to use.
Therefore, the prior art is in need of improvement.
Disclosure of Invention
The invention aims at the technical problems in the prior art and provides a map self-adaptive adjusting method and system, computer equipment and a readable storage medium.
A map adaptive adjustment method, wherein the method comprises the following steps:
acquiring longitude and latitude ranges of a map visual interface and the current central point position of a map;
dividing a map visual interface into appointed quadrants by taking a map central point as an origin, and calculating the longitude and latitude range of each quadrant;
when the map self-adaptive range is not specified, the default range is the whole map visual interface; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position;
calculating an element center position formed by longitude and latitude positions of the elements according to the position set of the map elements;
calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position, and calculating a map level suitable for a visual angle;
and calling a map interface to set a map central point and a map hierarchy and switching map viewpoints.
The map self-adaptive adjusting method comprises the following steps of obtaining the longitude and latitude range of the map visual interface and the current central point position of the map:
and acquiring the longitude and latitude range of the visual interface of the whole map and the current central point position of the map.
The map self-adaptive adjustment method comprises the following steps of dividing a map visual interface into designated quadrants by taking a map central point as an origin, and calculating the longitude and latitude range of each quadrant:
and dividing the map visual interface into four quadrants according to a horizontal axis and a vertical axis in a Cartesian coordinate system by taking the map central point as an origin, and calculating the longitude and latitude range of each quadrant.
According to the map self-adaptive adjusting method, when the map self-adaptive range is not specified, the default range is the whole map visual interface; when the self-adaptive range of the designated map exists, the step of calculating the longitude and latitude deviation value of the central point according to the designated range and the position of the central point comprises the following steps:
judging whether a designated map self-adaptive range exists, if not, setting the default range as the whole map visual interface; if yes, calculating the longitude and latitude deviation value of the central point according to the specified range and the position of the central point.
The map self-adaptive adjusting method comprises the following steps of calculating an element center position formed by element longitude and latitude positions according to a position set of map elements:
providing a set of locations of visual elements on a map; and calculating the element center position formed by the longitude and latitude positions of the elements according to the position set of the map elements.
The map self-adaptive adjusting method comprises the following steps of calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints:
and calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints in a smooth mode.
The map self-adaptive adjusting method comprises the following steps of calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints in a smooth mode, wherein the steps of:
when the size of the browser changes or the size of the map display area changes, the map is adjusted in a self-adaptive mode, and the visual elements on the map are displayed in the designated range.
A map adaptive adjustment system, wherein the system comprises:
the acquisition module is used for acquiring the latitude and longitude range of the map visual interface and the current central point position of the map;
the dividing and calculating module is used for dividing the map visual interface into designated quadrants by taking the map central point as an original point and calculating the latitude and longitude range of each quadrant;
the default and calculation module is used for setting the default range as the whole map visual interface when the map self-adaptive range is not specified; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position;
the element center calculation module is used for calculating an element center position formed by longitude and latitude positions of the elements according to the position set of the map elements;
the map level processing module is used for calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position and calculating a map level suitable for a visual angle;
and the calling and switching module is used for calling the map interface to set the map central point and the map hierarchy and switching the map viewpoint.
A computer device comprising a memory storing a computer program and a processor, wherein the processor when executing the computer program implements the steps of any of the map adaptive adjustment methods.
A computer-readable storage medium, on which a computer program is stored, wherein the computer program, when being executed by a processor, realizes the steps of any of the map adaptive adjustment methods.
Compared with the prior art, the embodiment of the invention has the following advantages:
according to the map self-adaptive adjusting method and system, the computer equipment and the readable storage medium provided by the embodiment of the invention, the map self-adaptive adjusting method capable of appointing the quadrant range is provided. When the size of the browser changes or the size of the map display area changes, the map can be adaptively adjusted without manual setting, and the visual elements on the map are presented in the designated range at a better visual angle.
The invention can appoint the adaptive range of the map, relatively and smoothly adjust the grade and the central point of the electronic map in a gradual change mode, realize the smooth change of the electronic map, ensure that the visual effect is better when a user checks the electronic map, and effectively improve the user experience.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic flowchart of a map adaptive adjustment method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a map adaptive adjustment system according to an embodiment of the present invention;
fig. 3 is an internal structural diagram of a computer device in an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
The inventor finds that the map self-adaptive function in the prior art cannot meet the special requirements, for example, in a general map visualization system interface, a map is tiled to serve as a base map, chart statistical data accounts for three quarters, and only one quarter of a browser interface or a map visualization interface is provided to show map points. In the prior art, the map is difficult to realize self-adaptation in a specified range, and map elements cannot be presented in a specified area of a better visual map hierarchy according to requirements, so that the map is inconvenient for users to use.
In order to solve the problems, in the embodiment of the invention, the latitude and longitude range of the map visual interface and the current central point position of the map are obtained; calculating the latitude and longitude range of each quadrant by taking the central point of the map as an origin; when the self-adaptive range of the map is not specified, the default range is the visual interface of the whole map; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position; calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position, and calculating a map level suitable for a visual angle; and calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints. The invention can appoint the adaptive range of the map, relatively and smoothly adjust the grade and the central point of the electronic map in a gradual change mode, realize the smooth change of the electronic map, ensure that the visual effect is better when a user checks the electronic map, and provide convenience for the user to use.
Various non-limiting embodiments of the present invention are described in detail below with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 shows a map adaptive adjustment method according to an embodiment of the present invention, where the method includes:
s1, acquiring longitude and latitude ranges of a map visual interface and a current map central point position;
in the method, the latitude and longitude range of the visual interface of the whole map and the current central point position of the map are obtained.
For example: the range of the acquisition visual interface provided by the calling map is as follows: left lower: [ 113.93739, 22.5617335 ], top right: [ 114.1017362, 22.65014478 ];
calling a map center point interface to obtain the current center position of the map as follows: [ 114.0195645,22.605946249 ].
The advantages of the step are as follows: and acquiring the current condition of the map, and providing basic data for subsequent quadrant division.
S2, dividing a map visual interface into designated quadrants by taking the map central point as an original point, and calculating the longitude and latitude range of each quadrant;
the map visual interface is divided into four quadrants according to a horizontal axis and a vertical axis in a Cartesian coordinate system by taking a map central point as an origin, and the longitude and latitude range of each quadrant is calculated.
For example: the coordinate of the center point of the map [ 114.0195645,22.605946249 ] is taken as the origin of a coordinate system, the whole visible interface of the map is divided according to plane coordinates, the upper right is called a first quadrant, the upper left is called a second quadrant, the lower left is called a third quadrant, the lower right is called a fourth quadrant, and the range of each quadrant occupies one fourth of the whole screen.
The advantages of the step are as follows: and calculating the range of each quadrant, and providing a basis for calculating the deviation value of the subsequent map self-adaptive change in the designated range.
S3, when the self-adaptive range of the map is not specified, the default range is the visual interface of the whole map; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position;
in the step, whether a designated map self-adaptive range exists is judged, and if not, the default range is the whole map visual interface; if yes, calculating the latitude and longitude deviation value of the central point according to the specified range and the central point position.
For example: 3 map point location elements exist on the map, and if the self-adaptive range is not specified, the 3 elements are defaulted to be uniformly displayed on the whole map visual interface; if there is a specified map adaptation range, for example, the first quadrant, this means that the 3 map elements are to be displayed in the upper right corner of the map visual interface, i.e., the first quadrant area. And then calculating the longitude and latitude deviation value (difference is respectively calculated between the longitude and latitude) of the central point according to the self-adaptive range.
The benefits of this step S3: user-defined map element display range can be supported.
S4, calculating an element center position formed by the longitude and latitude positions of the elements according to the position set of the map elements;
in this step, a position set of visual elements on a map is provided; and calculating the element center position formed by the longitude and latitude positions of the elements according to the position set of the map elements.
For example: there are 3 map point location elements a on the map, the set of coordinate points is an array C: [ [114.04417,22.624486], [113.9925,22.609273], [114.025569,22.587404] ], the central positions of the 3 points are calculated as: [114.020746,22.607054333].
The advantages of the step are as follows: and calculating the center position of all the element components, and providing a basis for the point variation of the center of the map.
S5, calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position, and calculating a map level suitable for a visual angle;
for example: the map is provided with 3 map point location element sets A, and a new map central point O is calculated according to a central point longitude and latitude deviation value (a central point deviation value of an original center and a specified quadrant range); then, based on the a-point set, a rectangular range composed of these points is calculated, and extended boundary points (lower left and upper right) are calculated. Invoking the map's boundary method translates to the map level zoom.
The advantages of the step are as follows: and calculating a new map central point and a new boundary forming point, and can be used for directly calling a map setting central point and a level in the follow-up process.
And S6, calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints.
And calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints in a smooth mode.
For example: calculating a new map center point as follows: [114.021466,22.607142564] and level 15, build map API call parameter object { center: [114.021466,22.607142564], zoom:15} and finally, selecting a jump mode to directly call, for example: the mapbox map comprises flyto, jumpto, easeto and the like, wherein the flyto is the gentest, has animation and has better effect. Remarking: different map engine interface names are different, and the effect is similar.
The advantages of the step are as follows: calculating sufficient map change parameters: the coordinates and the levels of the central point do not need to define animations by self, and the method is suitable for api calling interfaces of various graph sources.
According to the map self-adaptive adjusting method, when the size of a browser changes or the size of a map display area changes, the map is self-adaptively adjusted, and visual elements on the map are displayed in a specified range.
Therefore, the invention provides a map self-adaptive adjusting method capable of appointing a quadrant range. When the size of the browser changes or the size of the map display area changes, the map can be adjusted in a self-adaptive manner without manual setting, and visual elements on the map are presented in a specified range at a better visual angle; the electronic map can be assigned with a map self-adaptive range, the grade and the central point of the electronic map are relatively and smoothly adjusted in a gradual change mode, the gradual change of the electronic map is realized, the visual effect is good when a user checks the electronic map, and the user experience can be effectively improved.
In one embodiment, the present invention provides a map adaptive adjustment system, as shown in fig. 2, the system comprising:
the obtaining module 21 is configured to obtain a longitude and latitude range of a map visual interface and a current center position of a map; as described above.
The dividing and calculating module 22 is used for dividing the map visual interface into designated quadrants by taking the map central point as an origin, and calculating the latitude and longitude range of each quadrant; as described above.
The default and calculation module 23 is configured to, when the map adaptive range is not specified, determine that the default range is the entire map visual interface; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position; as described above.
The element center calculating module 24 is used for calculating an element center position formed by longitude and latitude positions of the elements according to the position set of the map elements; as described above.
The map level processing module 25 is configured to calculate a new map center point position according to the longitude and latitude deviation value of the center point and the element center position, and calculate a map level suitable for a viewing angle; as described above.
The calling and switching module 26 is used for calling a map interface to set a map central point and a map hierarchy and switching a map viewpoint; as described above.
In one embodiment, the present invention provides a computer device, which may be a terminal, having an internal structure as shown in fig. 3. The computer device includes a processor, a memory, a network interface, a display screen, and an input system connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement a method of generating a natural language model. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input system of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on a shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the block diagram shown in fig. 3 is only a partial block diagram of the structure associated with the present application, and does not constitute a limitation to the computer apparatus to which the present application may be applied, and that a particular computer apparatus may comprise more or less components than those shown in the drawings, or may combine certain components, or have a different arrangement of components.
An embodiment of the present invention provides a computer device, which includes a memory and a processor, where the memory stores a computer program, and the processor implements the following steps when executing the computer program:
1. acquiring longitude and latitude ranges of a visual interface of the whole map and the current central point position of the map;
2. dividing a map visual interface into four quadrants according to a horizontal axis and a vertical axis in a Cartesian coordinate system by taking a map central point as an origin, and calculating the longitude and latitude range of each quadrant;
3. judging whether a designated map self-adaptive range exists or not, and if not, setting the default range as the whole map visual interface; if yes, calculating a central point longitude and latitude deviation value according to the specified range and the central point position;
4. providing a position set of visual elements on a map, and calculating an element center position formed by longitude and latitude positions of the elements according to the position set of the map elements;
5. calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position, and simultaneously calculating a map level suitable for a visual angle;
6. finally, calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints in a smooth mode; as described in detail above.
In summary, compared with the prior art, the embodiment of the invention has the following advantages:
according to the map self-adaptive adjusting method and system, the computer device and the readable storage medium, the method comprises the following steps: acquiring a longitude and latitude range of a map visual interface and a current central point position of a map; calculating the latitude and longitude range of each quadrant by taking the central point of the map as an origin; when the self-adaptive range of the map is not specified, the default range is the visual interface of the whole map; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position; calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position, and calculating a map level suitable for a visual angle; and calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints. The invention can appoint the adaptive range of the map, relatively and smoothly adjust the grade and the central point of the electronic map in a gradual change mode, realize the smooth change of the electronic map, ensure that the visual effect is better when a user checks the electronic map, and provide convenience for the user to use.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A map adaptive adjustment method, the method comprising:
acquiring a longitude and latitude range of a map visual interface and a current central point position of a map;
dividing a map visual interface into appointed quadrants by taking a map central point as an origin, and calculating the latitude and longitude range of each quadrant;
when the map self-adaptive range is not specified, the default range is the whole map visual interface; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position;
calculating an element center position formed by longitude and latitude positions of the elements according to the position set of the map elements;
calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position, and calculating a map level suitable for a visual angle;
and calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints.
2. The adaptive map adjusting method according to claim 1, wherein the step of obtaining the latitude and longitude range of the map visual interface and the current center point position of the map comprises:
and acquiring the longitude and latitude range of the visual interface of the whole map and the current central point position of the map.
3. The adaptive map adjustment method according to claim 1, wherein the map visual interface is divided into designated quadrants by using the map center point as an origin, and the step of calculating the latitude and longitude range of each quadrant comprises:
and dividing the map visual interface into four quadrants according to a horizontal axis and a vertical axis in a Cartesian coordinate system by taking the map central point as an origin, and calculating the longitude and latitude range of each quadrant.
4. The map adaptive adjustment method according to claim 1, wherein when the map adaptive range is not specified, the default range is the entire map visual interface; when the self-adaptive range of the designated map exists, the step of calculating the longitude and latitude deviation value of the central point according to the designated range and the position of the central point comprises the following steps:
judging whether a designated map self-adaptive range exists, if not, setting the default range as the whole map visual interface; if yes, calculating the latitude and longitude deviation value of the central point according to the specified range and the central point position.
5. The adaptive map adjusting method according to claim 1, wherein the step of calculating an element center position composed of element longitude and latitude positions according to the position set of the map element comprises:
providing a set of locations of visual elements on a map; and calculating the element center position formed by the longitude and latitude positions of the elements according to the position set of the map elements.
6. The adaptive map adjusting method according to claim 1, wherein the step of calling the map interface to set a map center point and a map hierarchy, and the step of switching the map viewpoint further comprises:
and calling a map interface to set a map central point and a map hierarchy, and switching map viewpoints in a smooth mode.
7. The adaptive map adjusting method according to claim 1, wherein the step of calling the map interface to set a map center point and a map hierarchy and switching a map viewpoint in a smooth manner further comprises:
when the size of the browser changes or the size of the map display area changes, the map is adjusted in a self-adaptive mode, and the visual elements on the map are displayed in the designated range.
8. A map adaptive adjustment system, the system comprising:
the acquisition module is used for acquiring the longitude and latitude range of the map visual interface and the current central point position of the map;
the dividing and calculating module is used for dividing the map visual interface into appointed quadrants by taking the map central point as an origin, and calculating the latitude and longitude range of each quadrant;
the default and calculation module is used for setting the default range as the whole map visual interface when the map self-adaptive range is not specified; when a designated map self-adaptive range exists, calculating a central point longitude and latitude deviation value according to the designated range and the central point position;
the element center calculation module is used for calculating an element center position formed by the longitude and latitude positions of the elements according to the position set of the map elements;
the map hierarchy processing module is used for calculating a new map central point position according to the longitude and latitude deviation value of the central point and the element central position and calculating a map hierarchy suitable for a visual angle;
and the calling and switching module is used for calling the map interface to set the map central point and the map hierarchy and switching the map viewpoint.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor when executing the computer program implements the steps of the map adaptive adjustment method according to any one of claims 1 to 7.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the map adaptive adjustment method according to any one of claims 1 to 7.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103973743A (en) * | 2013-01-31 | 2014-08-06 | 上海飞田通信技术有限公司 | Adaptive region querying system and method based on smart mobile device |
| CN104807466A (en) * | 2014-01-24 | 2015-07-29 | 腾讯科技（深圳）有限公司 | Map information display method and map information display apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103973743A (en) * | 2013-01-31 | 2014-08-06 | 上海飞田通信技术有限公司 | Adaptive region querying system and method based on smart mobile device |
| CN104807466A (en) * | 2014-01-24 | 2015-07-29 | 腾讯科技（深圳）有限公司 | Map information display method and map information display apparatus |
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