CN111666357A - Method and device for organizing map slice data - Google Patents

Method and device for organizing map slice data Download PDF

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Publication number
CN111666357A
CN111666357A CN201910164359.5A CN201910164359A CN111666357A CN 111666357 A CN111666357 A CN 111666357A CN 201910164359 A CN201910164359 A CN 201910164359A CN 111666357 A CN111666357 A CN 111666357A
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slice data
map
map slice
dividing
layer
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刘子轩
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Alibaba Group Holding Ltd
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Alibaba Group Holding Ltd
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    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/20Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
    • G06F16/29Geographical information databases

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Abstract

The invention discloses a method and a device for organizing map slice data. The method comprises the following steps: dividing a plurality of map slice data into at least one map layer according to a first preset rule; dividing the map slice data divided into the same map layer into a plurality of levels according to a second preset rule; and generating path information of the map slice data according to the layer and the grade of the map slice data, wherein the path information comprises the layer and the grade of the map slice data. The map slice data can be quickly searched according to the path information of the map slice data, and the batch map slice data can be searched, updated and deleted more conveniently and efficiently.

Description

Method and device for organizing map slice data
Technical Field
The invention relates to the technical field of map data, in particular to a method and a device for organizing map slice data.
Background
The map service generally caches map slice data in order to improve the response efficiency of a map, and the map service can improve the execution speed by directly searching for required map slice data from the cache when executing a relevant command.
In the map slice data cached in the prior art, a unique identifier is generally set for each slice data, and then the slice data is sorted and stored according to parameters such as a timestamp and an access frequency. The organization method of the map slice data is not beneficial to fast searching of the map slice data and is also not beneficial to searching, updating and deleting of the map slice data in batches.
Disclosure of Invention
In view of the above, the present invention has been made to provide a method and apparatus for organizing map slice data that overcomes or at least partially solves the above-mentioned problems.
In a first aspect, an embodiment of the present invention provides a method for organizing map slice data, including:
dividing a plurality of map slice data into at least one map layer according to a first preset rule;
dividing the map slice data divided into the same map layer into a plurality of levels according to a second preset rule;
and generating path information of the map slice data according to the layer and the grade of the map slice data, wherein the path information comprises the layer and the grade of the map slice data.
In some optional embodiments, dividing the plurality of map slice data into at least one map layer according to a first preset rule includes:
and dividing the map slice data into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data.
In some optional embodiments, dividing the plurality of map slice data into at least one map layer according to a first preset rule includes:
dividing the map slice data into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data;
and dividing the map slice data of the same map layer into a point, line or surface sub-map layer of the map layer.
In some optional embodiments, dividing the map slice data divided into the same layer into a plurality of levels according to a second preset rule includes:
and dividing the map slice data of which the proportional scale in the same map layer meets the preset requirement into the same grade.
In some optional embodiments, before dividing the plurality of map slice data into at least one map layer according to a first preset rule, the method further includes:
dividing the map slice data into at least one region according to a third preset rule;
correspondingly, dividing the map slice data into at least one map layer according to a first preset rule, including: dividing a plurality of map slice data of the same area into at least one map layer according to a first preset rule;
correspondingly, the path information includes an area where the map slice data is located, a layer where the map slice data is located, and a belonging grade.
In some optional embodiments, dividing the plurality of map slice data into at least one region according to a third preset rule includes:
dividing a plurality of map slice data into at least one region according to an administrative region; or the like, or, alternatively,
the plurality of map slice data is divided into at least one region by geographic region.
In some optional embodiments, after generating the path information of the map slice data, the method further includes:
storing the map slice data and the path information thereof.
In a second aspect, an embodiment of the present invention provides a tissue apparatus for map slice data, including:
the first dividing module is used for dividing the map slice data into at least one map layer according to a first preset rule;
the second dividing module is used for dividing the map slice data divided into the same map layer by the first dividing module into a plurality of grades according to a second preset rule;
the generating module is used for generating path information of the map slice data according to the layer and the grade of the map slice data, and the path information comprises the layer and the grade of the map slice data.
In some optional embodiments, the first partitioning module is specifically configured to:
and dividing the map slice data into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data.
In some optional embodiments, the first partitioning module is specifically configured to:
dividing the map slice data into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data; and dividing the map slice data of the same map layer into a point, line or surface sub-map layer of the map layer.
In some optional embodiments, the second dividing module is specifically configured to:
and dividing the map slice data of which the proportional scale in the same map layer meets the preset requirement into the same grade.
In some optional embodiments, the apparatus further comprises:
the third dividing module is used for dividing the map slice data into at least one region according to a third preset rule;
correspondingly, the first division module is specifically configured to: dividing a plurality of map slice data of the same area into at least one map layer according to a first preset rule;
correspondingly, the path information generated by the generating module includes the area where the map slice data is located, the layer where the map slice data is located, and the level to which the map slice data belongs.
In some optional embodiments, the third dividing module is specifically configured to:
dividing a plurality of map slice data into at least one region according to an administrative region; or, the plurality of map slice data is divided into at least one region by geographical region.
In some optional embodiments, the apparatus further comprises:
and the storage module is used for storing the map slice data and the path information generated by the generation module.
In a third aspect, the present invention provides a computer-readable storage medium, on which computer instructions are stored, which when executed by a processor implement the above-mentioned method for organizing map slice data.
In a fourth aspect, an embodiment of the present invention provides a server, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the above method of organizing map slice data when executing the program.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
dividing a plurality of map slice data into at least one map layer according to a first preset rule; dividing the map slice data divided into the same map layer into a plurality of levels according to a second preset rule; and generating path information of the map slice data according to the layer and the grade of the map slice data, wherein the path information comprises the layer and the grade of the map slice data. According to the path information of the map slice data, a certain map slice data, all map slice data belonging to a certain grade or all map slice data of a certain layer can be quickly searched or positioned, and the map slice data can be updated and deleted singly or in batches.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a flow chart illustrating a method for organizing map slice data according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating an implementation of a map slice data caching method according to a second embodiment of the present invention;
FIG. 3 is a schematic view of the organization of map slice data according to a second embodiment of the present invention;
fig. 4 is a schematic structural diagram of an organizing apparatus for map slice data according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
In order to solve the problems that the organization method of the map slice data in the prior art is not beneficial to fast searching of the map slice data and is also not beneficial to searching, updating and deleting of the map slice data in batches, the embodiment of the invention provides the organization method and the organization device of the map slice data, which can fast search the map slice data according to the path information of the map slice data and enable the searching, updating and deleting of the map slice data in batches to be more convenient and efficient.
Example one
The embodiment of the invention provides a method for organizing map slice data, wherein the map slice data refers to data of map units with set sizes or ranges, which are cut from the map data according to a certain rule. The process is shown in fig. 1, and comprises the following steps:
step S11: dividing the map slice data into at least one map layer according to a first preset rule.
Specifically, the map slice data may be divided into at least one map layer according to the feature of the map slice data; or dividing the map slice data into at least one layer according to the service characteristics of the map slice data; optionally, the map slice data may be divided into at least one map layer according to the element features and the service features of the map slice data.
The feature of the map section data refers to a category to which the map section data belongs, such as a building, a water system, and a road. For example, map slice data in which all the element features are buildings may be divided into one layer, map slice data in which all the element features are water systems may be divided into one layer, and map slice data in which all the element features are roads may be divided into one layer.
The business feature of the map slice data refers to a map slice data usage feature, such as for road navigation, for gourmet search, and the like.
After the map slice data are divided into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data, the map slice data of the same map layer can be further divided into points, lines or surface sub-map layers of the map layer respectively.
Wherein, the dot-sub-layer means that all the constituent elements are distributed in a dot shape or occupy a small area of the ground, such as mining points, towns and the like; the line sub-graph layer refers to that all the components are distributed in a strip shape, such as a travel route, a traffic line, a river, a passenger flow route and the like; the surface sub-layer refers to the surface distribution of each constituent element, and can be divided into: continuously and fully distributed with mapping areas such as landforms, climates and the like; the discontinuity is distributed in sheet shape, such as urban area, lake, park, forest, etc.; distributed in a large range, such as animals, population, etc. Wherein the dot distribution and the surface distribution are relative, such as cities, and the cities can become dots on the distribution map of the cities in the country; on a certain city map, the city becomes a surface again.
Step S12: and dividing the map slice data divided into the same map layer into a plurality of levels according to a second preset rule.
Specifically, map slice data in which a scale in the same map layer meets a preset requirement may be divided into the same level. The map slice data with the same scale in the same map layer may be divided into the same level; map slice data in which the scale size in the same layer is within a specified range may be classified into the same level.
Or dividing the map slice data with the resolution meeting the preset requirement in the same layer into the same level. The map slice data with the same resolution in the same layer may be divided into the same level; it is also possible that map slice data in the same layer whose resolution size is within a specified range is divided into the same level.
Wherein the resolution and scale of the map slice data are in one-to-one correspondence. The scale means how much distance one unit on the map slice data represents actually, and the resolution represents how much distance one pixel on the screen represents actually, so that when one is determined, the corresponding other is also determined.
Step S13: and generating path information of the map slice data according to the layer and the grade of the map slice data.
Specifically, the generated path information includes a layer where the map slice data is located and a belonging level. The path information of the map slice data may include: the map slice data comprises an identifier of a layer where the map slice data is located, an identifier of a belonging grade and an identifier of the map slice data.
In the method for organizing map slice data according to the first embodiment, a plurality of map slice data are divided into at least one map layer according to a first preset rule; dividing the map slice data divided into the same map layer into a plurality of levels according to a second preset rule; and generating path information of the map slice data according to the layer and the grade of the map slice data, wherein the path information comprises the layer and the grade of the map slice data. According to the path information of the map slice data, a certain map slice data, all map slice data belonging to a certain grade or all map slice data of a certain layer can be quickly searched or positioned, and the map slice data can be updated and deleted singly or in batches.
In some optional embodiments, before the step S11 divides the map slice data into at least one layer according to the first preset rule, the map slice data may be further divided into at least one region according to a third preset rule.
In some optional embodiments, after the path information of all the map slice data is generated in step S13, the map slice data and the path information thereof may be stored.
Specifically, the storage may be in a cache space, a memory space, a mobile hard disk space, a network space, or a space of other shape.
Example two
The second embodiment of the present invention provides a method for caching map slice data, a flow of which is shown in fig. 2, and the method includes the following steps:
step S21: and dividing the plurality of map slice data into at least one region according to a third preset rule.
Specifically, the plurality of map slice data may be divided into at least one region according to an administrative region.
The administrative division is an abbreviation of administrative division, which is an area division executed by the country for hierarchical management. The administrative regions of the people's republic of China are divided into three levels, namely a provincial administrative region, a county administrative region and a rural administrative region.
Dividing a plurality of map slice data into at least one region according to an administrative region, specifically, dividing a plurality of map slice data belonging to the same administrative region into at least one region; the map slice data of the same level of the administrative area may be divided into at least one area.
Specifically, the map slice data are divided into at least one region according to a third preset rule, or the map slice data are divided into at least one region according to a geographic region, that is, the map slice data are divided into at least one region according to the map information.
Step S22: dividing a plurality of map slice data of the same area into at least one map layer according to a first preset rule.
Step S23: and dividing the map slice data divided into the same map layer into a plurality of levels according to a second preset rule.
Step S24: and generating path information of the map slice data according to the layer and the grade of the map slice data.
Specifically, the generated path information includes an area where the map slice data is located, a layer where the map slice data is located, and a level to which the map slice data belongs. The path information of the map slice data may include: the map slicing method comprises the steps of identification of an area where the map slicing data are located, identification of a layer where the map slicing data are located, identification of a belonging grade and identification of the map slicing data.
The steps S22 to S24 are similar to the steps S11 to S13 in the first embodiment, and are not repeated here.
After steps S21 to S24, the Map slice data may be structurally stored, and as shown in fig. 3, all the Map slice data in the Map data Map are divided into a plurality of Region regions, the Map slice data in the same Region (for example, Region 2) are divided into a plurality of Layer layers, and the Map slice data in the same Layer (for example, Layer 2) are divided into a plurality of Layer zooms, each Zoom including a plurality of Map slice data Tile. Therefore, map slice data belonging to the same area, the same map Layer or the same level can be quickly found according to the path information, for example, batch map slice data belonging to the same map Layer2 is required to be found, and the Layer2 can be quickly positioned in the Region2 as long as the Region2 is found first; and certain map slice data can be quickly found according to the path information.
Step S25: and storing the map slice data and the path information thereof into a cache.
After the map slice data and the path information thereof are cached, the required map slice data are directly searched from the cache when the relevant command is executed, and the execution speed of the map service can be improved.
Based on the same inventive concept, an embodiment of the present invention further provides a tissue device of map slice data, which has a structure as shown in fig. 4, and includes:
the first dividing module 41 is configured to divide the multiple map slice data into at least one map layer according to a first preset rule;
the second dividing module 42 is configured to divide the map slice data divided into the same map layer by the first dividing module 41 into multiple levels according to a second preset rule;
the generating module 43 is configured to generate path information of the map slice data according to the layer and the level where the map slice data is located, where the path information includes the layer where the map slice data is located and the level to which the map slice data belongs.
In some optional embodiments, the first dividing module 41 is specifically configured to:
and dividing the map slice data into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data.
In some optional embodiments, the first dividing module 41 is specifically configured to:
dividing the map slice data into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data; and dividing the map slice data of the same map layer into a point, line or surface sub-map layer of the map layer.
In some optional embodiments, the second dividing module 42 is specifically configured to:
and dividing the map slice data of which the proportional scale in the same map layer meets the preset requirement into the same grade.
In some optional embodiments, the apparatus further comprises:
a third dividing module 44, configured to divide the plurality of map slice data into at least one region according to a third preset rule;
correspondingly, the first dividing module 41 is specifically configured to: dividing a plurality of map slice data of the same area into at least one map layer according to a first preset rule;
correspondingly, the path information generated by the generating module 43 includes an area where the map slice data is located, a layer where the map slice data is located, and a belonging level.
In some optional embodiments, the third dividing module 44 is specifically configured to:
dividing a plurality of map slice data into at least one region according to an administrative region; or, the plurality of map slice data is divided into at least one region by geographical region.
In some optional embodiments, the apparatus further comprises:
a storage module 45, configured to store the map slice data and the route information generated by the generation module 43.
With regard to the apparatus in the above-described embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated here.
Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the above-mentioned method for organizing map slice data.
Based on the same inventive concept, an embodiment of the present invention further provides a server, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the above method of organizing map slice data when executing the program.
Unless specifically stated otherwise, terms such as processing, computing, calculating, determining, displaying, or the like, may refer to an action and/or process of one or more processing or computing systems or similar devices that manipulates and transforms data represented as physical (e.g., electronic) quantities within the processing system's registers and memories into other data similarly represented as physical quantities within the processing system's memories, registers or other such information storage, transmission or display devices. Information and signals may be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
It should be understood that the specific order or hierarchy of steps in the processes disclosed is an example of exemplary approaches. Based upon design preferences, it is understood that the specific order or hierarchy of steps in the processes may be rearranged without departing from the scope of the present disclosure. The accompanying method claims present elements of the various steps in a sample order, and are not intended to be limited to the specific order or hierarchy presented.
In the foregoing detailed description, various features are grouped together in a single embodiment for the purpose of streamlining the disclosure. This method of disclosure is not to be interpreted as reflecting an intention that the claimed embodiments of the subject matter require more features than are expressly recited in each claim. Rather, as the following claims reflect, invention lies in less than all features of a single disclosed embodiment. Thus, the following claims are hereby expressly incorporated into the detailed description, with each claim standing on its own as a separate preferred embodiment of the invention.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
The steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. Of course, the storage medium may also be integral to the processor. The processor and the storage medium may reside in an ASIC. The ASIC may reside in a user terminal. Of course, the processor and the storage medium may reside as discrete components in a user terminal.
For a software implementation, the techniques described herein may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described herein. The software codes may be stored in memory units and executed by processors. The memory unit may be implemented within the processor or external to the processor, in which case it can be communicatively coupled to the processor via various means as is known in the art.
What has been described above includes examples of one or more embodiments. It is, of course, not possible to describe every conceivable combination of components or methodologies for purposes of describing the aforementioned embodiments, but one of ordinary skill in the art may recognize that many further combinations and permutations of various embodiments are possible. Accordingly, the embodiments described herein are intended to embrace all such alterations, modifications and variations that fall within the scope of the appended claims. Furthermore, to the extent that the term "includes" is used in either the detailed description or the claims, such term is intended to be inclusive in a manner similar to the term "comprising" as "comprising" is interpreted when employed as a transitional word in a claim. Furthermore, any use of the term "or" in the specification of the claims is intended to mean a "non-exclusive or".

Claims (10)

1. A method of organizing map slice data, comprising:
dividing a plurality of map slice data into at least one map layer according to a first preset rule;
dividing the map slice data divided into the same map layer into a plurality of levels according to a second preset rule;
and generating path information of the map slice data according to the layer and the grade of the map slice data, wherein the path information comprises the layer and the grade of the map slice data.
2. The method of claim 1, wherein dividing the plurality of map slice data into at least one layer according to a first preset rule comprises:
and dividing the map slice data into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data.
3. The method of claim 1, wherein dividing the plurality of map slice data into at least one layer according to a first preset rule comprises:
dividing the map slice data into at least one map layer according to the element characteristics and/or the service characteristics of the map slice data;
and dividing the map slice data of the same map layer into a point, line or surface sub-map layer of the map layer.
4. The method according to claim 1, wherein dividing the map slice data divided into the same layer into a plurality of levels according to a second preset rule comprises:
and dividing the map slice data of which the proportional scale in the same map layer meets the preset requirement into the same grade.
5. The method of claim 1, wherein before dividing the plurality of map slice data into at least one layer according to a first preset rule, further comprising:
dividing the map slice data into at least one region according to a third preset rule;
correspondingly, dividing the map slice data into at least one map layer according to a first preset rule, including: dividing a plurality of map slice data of the same area into at least one map layer according to a first preset rule;
correspondingly, the path information includes an area where the map slice data is located, a layer where the map slice data is located, and a belonging grade.
6. The method of claim 5, wherein dividing the plurality of map slice data into at least one region according to a third preset rule comprises:
dividing a plurality of map slice data into at least one region according to an administrative region; or the like, or, alternatively,
the plurality of map slice data is divided into at least one region by geographic region.
7. The method according to any one of claims 1 to 6, further comprising, after generating the path information of the map slice data:
storing the map slice data and the path information thereof.
8. An apparatus for organizing map slice data, comprising:
the first dividing module is used for dividing the map slice data into at least one map layer according to a first preset rule;
the second dividing module is used for dividing the map slice data divided into the same map layer by the first dividing module into a plurality of grades according to a second preset rule;
the generating module is used for generating path information of the map slice data according to the layer and the grade of the map slice data, and the path information comprises the layer and the grade of the map slice data.
9. A computer-readable storage medium having stored thereon computer instructions, which when executed by a processor, implement the method of organizing map slice data of any of claims 1 to 7.
10. A server, comprising: memory, processor and computer program stored on the memory and executable on the processor, characterized in that the processor implements the method of organizing map slice data according to any one of claims 1 to 7 when executing the program.
CN201910164359.5A 2019-03-05 2019-03-05 Method and device for organizing map slice data Pending CN111666357A (en)

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CN105631038A (en) * 2016-01-14 2016-06-01 上海博泰悦臻网络技术服务有限公司 Generation method and system of navigation map as well as electronic equipment with system
CN106294484A (en) * 2015-06-05 2017-01-04 中国移动通信集团河南有限公司 A kind of method and device updating electronic map data
CN108509546A (en) * 2018-03-12 2018-09-07 浙江省地理信息中心 It is a kind of based on shared safe map vector dicing strategy and method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102779165A (en) * 2012-06-21 2012-11-14 上海众恒信息产业股份有限公司 Building method of grid map picture base
CN106294484A (en) * 2015-06-05 2017-01-04 中国移动通信集团河南有限公司 A kind of method and device updating electronic map data
CN105631038A (en) * 2016-01-14 2016-06-01 上海博泰悦臻网络技术服务有限公司 Generation method and system of navigation map as well as electronic equipment with system
CN108509546A (en) * 2018-03-12 2018-09-07 浙江省地理信息中心 It is a kind of based on shared safe map vector dicing strategy and method

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