CN109697223A - Marine forecast human-computer interaction method based on GIS synchronization technology - Google Patents
Marine forecast human-computer interaction method based on GIS synchronization technology Download PDFInfo
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Abstract
The invention relates to a marine forecast human-computer interaction method based on a GIS synchronization technology. Step S1, establishing a browser plug-in to download the oceanographic data: establishing a browser plug-in for a browser; then, starting a browser plug-in to download the oceanographic data to an installation directory of the download file; step S2, the browser plug-in is adopted to enable the WebGIS to preload the oceanographic data: when the address accessed by the user is checked to be the marine forecast human-computer interaction system, the browser calls the downloaded marine meteorological data to load through the browser plug-in; and step S3, establishing a GIS-based multi-user synchronous drawing operation, associating users who manufacture the same ocean forecast product, packaging the GIS operation of each user by using an XML-based technology to form a standard specification and an analysis warehouse of the GIS operation, and simultaneously broadcasting the packaged GIS operation to browser ends of all participants to realize multi-user drawing synchronization.
Description
Technical field
The present invention relates to marine forecasting production field, the field WebGIS, browser plug-in development fields, and in particular to a kind of
Marine forecasting man-machine interaction method based on GIS simultaneous techniques.
Background technique
China is the country that Oceanic disasters take place frequently, and especially influences the tropical cyclone of China's Coastal Areas, tends to make
At biggish economic loss or even casualties.Marine forecasting is the important content of marine disaster prevention and reduction, can take precautions against natural calamities and subtract for ocean
Calamity provides technical support.Currently, the production of China's marine forecasting, torsion main flow are: National Bureau of Oceanography's marine environmental forecasting
Marine forecasting product-province's oracle/branch office's marine environmental forecasting center in the production the whole country of center utilizes oneself place
The forecast process system of characteristic carries out the forecast that oneself local characteristic is utilized with reference to revision-central station after receiving national guide product
Manufacturing system is revised after receiving higher level's guide product, and the production of entire marine forecasting product, circulation process are relatively complicated, sea
The period of foreign forecast model products production is longer, concertedness is poor.Therefore, it in order to meet the needs of ocean fining collaboration forecast, mentions
The working efficiency of high forecaster needs to establish a set of marine forecasting man-machine interactive system based on GIS simultaneous techniques, auxiliary forecast
Member's more accurate marine forecasting product of quick Fabrication.
The marine forecasting manufacturing system of the existing marine forecasting manufacturing system of country and various regions oracle mainly includes observation
Data are shown, numerical products are shown, three big modules of forecast human-computer interaction and production.
Observation data show, numerical products show be by browser end access server-side data be shown, including
The Marine Weathers data such as wind, wave, stream, but since the data of maritime meteorology website are more, access the observation data of server-side all every time
It needs to reload once, and needs to be overlapped displaying on GIS, with adding up for data volume, the speed of load will be got over
Come it is slower, be not able to satisfy gradually marine forecasting person daily forecast work, especially emergency disaster during, to data acquisition speed
The high scene of demand, traditional is all to improve reading and writing data performance using technological means in server-side, in volume of transmitted data not
It can be carried out material change, each browser access requires to read mass data, needs to invent the new technological means of one kind and comes more
A large amount of maritime meteorology data are loaded fastly.
It forecasts human-computer interaction and is made by the operation that browser end is drawn on GIS, existing technological means
It is that the mapping result of browser end is stored in GIS spatial data library by server end, user can only load inquiry other users
The marine forecasting list to have completed can not obtain the procedural information for the marine forecasting list that other users are making in real time,
But for marine forecasting production business, marine forecasting work is the work of a multiple person cooperational, needs multiple users
It plays respective professional domain and makes the same forecast model products jointly, it is more to make therefore, it is necessary to invent a kind of new technological means
User realizes the synchronous operation drawn on GIS jointly.
The shortcomings that prior art:
Observation data are shown in the prior art, numerical products displaying is that service end data is requested by browser end, and server-side is returned
Data are returned, browser carries out rendering displaying to it, in order to reduce period of reservation of number, improves system concurrency processing capacity, modern
Web system is generally used data caching method and improves to the traditional data mode of operation that immediate data library is read and write, including
Reverse proxy cache, database caches, application server caching, distributed caching and client-cache, among these reverse proxy
Caching, database caches, application server caching, distributed caching are to operate in server end to data, to improve
The treatment effeciency of memory, disk, Database Systems etc., client-cache are to store a small amount of static data by browser end,
To reduce the amount of access of data.These data caching methods will do it use in the building process of Web system, be formed more
The caching of level ground system, but for huge GIS spatial data, caching and the client for relying solely on server end are a small amount of
The caching of data be it is inadequate, the data volume of each browser access client is again without fundamentally being reduced.
Forecast the production of human-computer interaction product mainly using carrying out mapping operation, mesh on WebGIS platform in the prior art
The WebGIS platform of preceding mainstream includes the ArcIMS of ESRI company, MapXtreme, Intergraph company of MapInfo company
GeoMedia Web Map, SuperMap, Leaflet of Beijing hypergraph etc. can support the mapping operation of WebGIS well,
But the simultaneously operating that a set of comprehensive technology realizes drawing course on WebGIS has not yet been formed in these WebGIS platform interiors,
The synchronizing process operation of multiple users can not embody, and this, which is in harmony, is needed in marine forecasting production process business
The necessary function to be realized.
Summary of the invention
The purpose of the present invention is to provide a kind of marine forecasting man-machine interaction method based on GIS simultaneous techniques, this method
By way of browser plug-in, the local cache of a large amount of maritime meteorology data is realized, it is intended to browser access service for the first time
During end automatically downloading institute displaying in need data, with service end data update, the data of user terminal browser also with
Shi Gengxin, thus realize in addition to first secondly, any time user obtain service end data be all a small amount of more new data, from
And increase substantially displaying efficiency of the oceanographic data based on GIS；In addition, this method is to be built with open source Leaflet
Under WebGIS platform, a kind of multi-user's synchronization mapping operation based on GIS is invented, by the user of same marine forecasting production
It is associated, the GIS complex operations of each user form GIS using being packaged based on XML technology to each operation of GIS
The standard criterion and parsing storage of operation, while the GIS after encapsulation being operated to the browser end for broadcasting to all participants,
Realize that the drawing of multi-user is synchronous.
To achieve the above object, the technical scheme is that a kind of man-machine friendship of marine forecasting based on GIS simultaneous techniques
Mutual method, includes the following steps:
Step S1, browser plug-in is established to download maritime meteorology data:
Firstly, establishing browser plug-in for browser, start at the time of downloading including browser plug-in, the installation of downloading file
The script file that catalogue, browser plug-in are run；
Then, when checking user by the address that browser accesses is server address, i.e. starting browser plug-in downloading
Maritime meteorology data extremely download the installation directory of file；
Step S2, WebGIS is made to preload maritime meteorology data using browser plug-in:
When the address for checking user's access is marine forecasting man-machine interactive system, browser is called by browser plug-in
Maritime meteorology data through having downloaded are loaded；The marine forecasting man-machine interactive system system is developed based on Leaflet
WebGIS platform received by the way of external interface GeoJON transmission maritime meteorology data, and using these data it is direct
Realize that the preparatory superposition of maritime meteorology data is shown；
Step S3, the synchronous mapping operation of the multi-user based on GIS is established, the user of same marine forecasting production is closed
Connection, the GIS operation of each user form the standard criterion and parsing storage of GIS operation using being packaged based on XML technology,
The browser end that GIS operation after encapsulation is broadcast to all participants simultaneously, realizes that the drawing of multi-user is synchronous, that is, wraps
It includes:
GIS encapsulation: GIS encapsulation will encapsulate operational order while operator executes GIS operation, and be sent to from browser
Server back end；
GIS parsing: GIS parsing parses received server-side to GIS encapsulation messages, and examines to the data after parsing
It tests, examines the authenticity of GIS operation, for the GIS operation information upchecked, former packaging information can be broadcasted to participant and be used
Family browser end；After browser end recipient obtains this order XML message, parsing and conduct are carried out according to format file
The command operation of WebGIS is executed, and the operation of the GIS of the marine forecasting product consistent with sender, each user are completed
Operation and data do not clash mutually, and guarantee that the resulting result of each user and picture are consistent, it is real from sense organ
The multi-user collaborative operation of existing human-computer interaction.
In an embodiment of the present invention, in the step S1, browser is Chrome browser, corresponding browser plug-in
For Chrome plug-in unit.
In an embodiment of the present invention, in the step S3, GIS operation includes map scaling, Map roaming, geometry point
Analysis, point/line/face edit operation.
In an embodiment of the present invention, GIS operation authenticity inspection be using GIS platform carry command information into
Row self-test.
Compared to the prior art, the invention has the following advantages: it is of the invention, it is real by way of browser plug-in
The now local cache of a large amount of maritime meteorology data, it is intended to a downloading institute exhibition in need automatically during browser accesses server-side for the first time
The data shown, with the update of service end data, the data of user terminal browser also update at any time, to realize in addition to for the first time
Outside, the service end data that any time user obtains all is a small amount of more new data, is based on to increase substantially oceanographic data
The displaying efficiency of GIS.Compared with previous this be for the first time browser plug-in technology WebGIS combination, using new technology hand
Section come carry out a large amount of maritime meteorology data downloading, parsing work；
The present invention is synchronized and is drawn by multi-user of the foundation based on GIS under the WebGIS platform built with open source Leaflet
The user of same marine forecasting production is associated by graphic operation, and the GIS complex operations of each user, which utilize, is based on XML
Technology is packaged each operation of GIS, forms the standard criterion and parsing storage of GIS operation, while by the GIS after encapsulation
Operation broadcasts to the browser end of all participants, realizes that the drawing of multi-user is synchronous.This is for the first time compared with previous
Realize multi-user GIS and simultaneously operating technology combination, using new technological means by GIS spatial operation information multi-user it
Between synchronize.
Detailed description of the invention
Fig. 1 is the method for the present invention flow diagram.
Fig. 2 is the design framework of GIS of the present invention cooperation command messages format.
Specific embodiment
With reference to the accompanying drawing, technical solution of the present invention is specifically described.
The present invention provides a kind of marine forecasting man-machine interaction methods based on GIS simultaneous techniques, include the following steps:
Step S1, browser plug-in is established to download maritime meteorology data:
Firstly, establishing browser plug-in for browser, start at the time of downloading including browser plug-in, the installation of downloading file
The script file that catalogue, browser plug-in are run；Browser is Chrome browser, and corresponding browser plug-in is inserted for Chrome
Part；
Then, when checking user by the address that browser accesses is server address, i.e. starting browser plug-in downloading
Maritime meteorology data extremely download the installation directory of file；
Step S2, WebGIS is made to preload maritime meteorology data using browser plug-in:
When the address for checking user's access is marine forecasting man-machine interactive system, browser is called by browser plug-in
Maritime meteorology data through having downloaded are loaded；The marine forecasting man-machine interactive system system is developed based on Leaflet
WebGIS platform received by the way of external interface GeoJON transmission maritime meteorology data, and using these data it is direct
Realize that the preparatory superposition of maritime meteorology data is shown；
Step S3, the synchronous mapping operation of the multi-user based on GIS is established, the user of same marine forecasting production is closed
Connection, the GIS operation (including map scaling, Map roaming, geometrical analysis, point/line/face edit operation) of each user, which utilizes, to be based on
XML technology is packaged, and forms the standard criterion and parsing storage of GIS operation, while the GIS after encapsulation is operated broadcast transmission
To the browser end of all participants, realizes that the drawing of multi-user is synchronous, that is, include:
GIS encapsulation: GIS encapsulation will encapsulate operational order while operator executes GIS operation, and be sent to from browser
Server back end；
GIS parsing: GIS parsing parses received server-side to GIS encapsulation messages, and examines to the data after parsing
It tests, examines the authenticity (carrying out self-test using the command information that GIS platform carries) of GIS operation, the GIS to upcheck is grasped
Make information, former packaging information can be broadcasted to participant's user browser end；Browser end recipient, which obtains this, orders XML to disappear
It after breath, is executed, is completed consistent with sender according to the command operation that format file parse and as WebGIS
The operation of the GIS of marine forecasting product, the operation of each user and data do not clash mutually, and guarantee obtained by each user
Result and picture be consistent, from sense organ realize human-computer interaction multi-user collaborative operation.
The following are specific implementation processes of the invention.
A kind of marine forecasting man-machine interaction method based on GIS simultaneous techniques of the present invention is realized big by following two aspect
The simultaneously operating that the displaying efficiency and marine forecasting product G IS for measuring oceanographic data are drawn.
First aspect: by way of browser plug-in, the local cache of a large amount of maritime meteorology data is realized.Browser sheet
Body does not have the caching function of access mass data, the caching pre-add of a small amount of text, image data is only supported, if needing to cache
A large amount of maritime meteorology data, need to extend the function of browser, it is therefore desirable to supplement using plug-in part technology, not have in browser
Can receive in the case where having external auxiliary application program server end transmission maritime meteorology data, including a large amount of text,
Picture, numerical products file etc., and when accessing the address next time, data can be pre-loaded in system by plug-in unit, and
It does not need to execute a large amount of server-side data area operation, the technology path of specific browser plug-in is as follows.This invention is main
By taking chrome browser plug-in as an example:
1, browser plug-in downloading maritime meteorology data are established
Firstly, a Chrome plug-in unit, will there is this file of manifest.json certainly, this file can regard plug-in unit as
Configuration file, script file, pattern file, icon, Startup time, version number loaded needed for plug-in unit etc. is all within this document
Definition.It as follows, is the code content of manifest.json file.
What is parsed after downloading is local maritime meteorology data file, so selecting file: ///* .txt ";"
file:///*.nc";" file: ///* .png, and when accessing the address of the server, just start plug-in unit and be downloaded, downloads
File be put in plug-in unit installation where catalogue；Js is configured with plug-in unit when operation, road where the script injected to the page
Diameter, this configuration item is important, and the function of plug-in unit is largely realized by script；It is optional at the time of run_at indicates plug-in component operation
Value has document_start, document_end, document_idle, chooses document_end here, means
After having created DOM, run immediately before load not yet is similar to the child resource of picture or frame etc.；Icons is used to indicate
The address path of plug-in unit icon icon at the size of different scenes.
2, establishing browser plug-in makes WebGIS preload maritime meteorology data
When the address for checking access is the marine forecasting man-machine interactive system, browser will be called by plug-in unit and downloaded
Good local oceanographic data file is loaded, and this system is the WebGIS platform based on Leaflet exploitation, support HTML5 and
CSS3, using Object-Oriented Design, encapsulation is good, provides the third party Javascript plug-in unit of many professions to extend
The function of itself, to meet the operation such as the various inquiries of WebGIS to map, analysis, rendering, therefore this system can be based on
The WebGIS platform of Leaflet exploitation receives GeoJON transmission maritime meteorology data by the way of external interface, and utilizes
These data are directly shown in the preparatory superposition of maritime meteorology data.
Second aspect: under the WebGIS platform built with open source Leaflet, a kind of multi-user based on GIS is invented
Synchronous mapping operation, the user of same marine forecasting production is associated, and the GIS complex operations of each user utilize base
Each operation of GIS is packaged in XML technology, forms the standard criterion and parsing storage of GIS operation, while will be after encapsulation
GIS operation broadcast to the browser end of all participants, realize that the drawing of multi-user is synchronous.
It includes map scaling, Map roaming, geometrical analysis, point/line/face editor that this, which needs the GIS of cooperating to operate,
Operation, these are all the tools used in marine forecasting product mapping operation.This system uses B/S framework, using front and back
Hold separation design principle, due to extensible markup language (eXtensibleMarkup Language, XML) possess it is good
Scalability, self descriptiveness, self-consistency and it is across languages the advantages that, be suitble to expression, conversion and publication of the GIS data in Web,
Therefore realize that GIS's is synchronous with analytic technique using based on the operation of XML encapsulation.
GIS encapsulation: GIS encapsulation will encapsulate operational order while operator executes GIS operation, and send out from browser
Give server back end.It is formulated first a set of pre- in face of such complicated GIS operation to realize the real-time Transmission of GIS operation
The description mechanism for reporting product G IS production command messages can describe GIS operational order, the object of operation and operation ginseng
Number, sender executes the GIS mapping operation of marine forecasting product on a web browser, while generating GIS behaviour according to order rule
The command messages of work, server-side record the GIS operation information currently executed, while using XML technology to GIS operation information
It is packaged, function, operation object and the operating parameter of GIS operation can be described.As shown in Fig. 2, providing GIS cooperation order
The design framework of message format.
As described above, the command messages for the map reduction operation that XML is generated are as follows:
<xml version =" 1. 0"encoding=" utf -8">
<GISContent>
<SendMessage>
<FromUser>operator: A</FromUser>
<ToUser>viewer: B</ToUser>
<SendTime >2018/03/05 18:37 : 28 </ SendTime>
</ SendMessage >
< GISMessage >
<type>it reduces</Type>
<GISParameters>
<Parameter>
<name>XMin< /name>
<value>-1</value>
</Parameter>
<Parameter>
<name> XMin < /name>
<value>-2</value>
</Parameter>
</GISParameters>
< /GISMessage >
< / GISContent>
Above is exactly to be packaged by XML technology to GIS operation, performs the operation twice of diminution above, resolution is figure layer
" -1 " and " -2 " operation." GISContent " is the root node of reduction operation message format, " SendMessage ",
" GISMessage " etc. is all child node.
GIS parsing: GIS parsing received server-side is parsed to GIS encapsulation messages, and to the data after parsing into
Performing check examines the authenticity (mainly carrying out self-test using the command information that GIS platform carries) of GIS operation, for examining
By GIS operation information, former packaging information can be broadcasted to participant's user browser end.Browser end recipient obtains should
After item order XML message, is executed according to the command operation that format file parse and as WebGIS, complete and send
The operation of the GIS of the consistent marine forecasting product in side, the operation of each user and data do not clash mutually, and guarantee every
The resulting result of a user and picture are consistent, and the multi-user collaborative operation of human-computer interaction is realized from sense organ.
GIS operation encapsulation and parsing based on XML are beneficial to: (1) authority data format, the expression GIS that XML can be convenient
Spatial information；(2) good scalability, no matter GIS operation has mostly complexity, can disposably be carried out by way of XML document
Encapsulation and parsing.
The present invention is established clear on the WebGIS platform based on Leaflet using the developing plug technology that Chrome is provided
It lookes at device plug-in unit, to download the maritime meteorology data of marine forecasting man-machine interactive system offer, and is provided using WebGIS platform
Data-interface, plug-in unit local downloaded maritime meteorology data conversion and submitted at the data format of GeoJSON by calling
WebGIS platform, so that WebGIS platform be made to be carried out to it using included analytic technique using displaying.Using open source
Under the WebGIS platform that Leaflet is built, a kind of multi-user's synchronization mapping operation based on GIS is invented, by same marine forecasting
The user of production is associated, the GIS complex operations of each user utilize based on XML technology to each of GIS operate into
Row encapsulation forms the standard criterion and parsing storage of GIS operation, while the GIS operation after encapsulation is broadcast to all ginsengs
With the browser end of person, the drawing simultaneously operating of multi-user is realized.
The above are preferred embodiments of the present invention, all any changes made according to the technical solution of the present invention, and generated function is made
When with range without departing from technical solution of the present invention, all belong to the scope of protection of the present invention.
Claims (4)
1. a kind of marine forecasting man-machine interaction method based on GIS simultaneous techniques, which comprises the steps of:
Step S1, browser plug-in is established to download maritime meteorology data:
Firstly, establishing browser plug-in for browser, start at the time of downloading including browser plug-in, the installation of downloading file
The script file that catalogue, browser plug-in are run；
Then, when checking user by the address that browser accesses is server address, i.e. starting browser plug-in downloading
Maritime meteorology data extremely download the installation directory of file；
Step S2, WebGIS is made to preload maritime meteorology data using browser plug-in:
When the address for checking user's access is marine forecasting man-machine interactive system, browser is called by browser plug-in
Maritime meteorology data through having downloaded are loaded；The marine forecasting man-machine interactive system system is developed based on Leaflet
WebGIS platform received by the way of external interface GeoJON transmission maritime meteorology data, and using these data it is direct
Realize that the preparatory superposition of maritime meteorology data is shown；
Step S3, the synchronous mapping operation of the multi-user based on GIS is established, the user of same marine forecasting production is closed
Connection, the GIS operation of each user form the standard criterion and parsing storage of GIS operation using being packaged based on XML technology,
The browser end that GIS operation after encapsulation is broadcast to all participants simultaneously, realizes that the drawing of multi-user is synchronous, that is, wraps
It includes:
GIS encapsulation: GIS encapsulation will encapsulate operational order while operator executes GIS operation, and be sent to from browser
Server back end；
GIS parsing: GIS parsing parses received server-side to GIS encapsulation messages, and examines to the data after parsing
It tests, examines the authenticity of GIS operation, for the GIS operation information upchecked, former packaging information can be broadcasted to participant and be used
Family browser end；After browser end recipient obtains this order XML message, parsing and conduct are carried out according to format file
The command operation of WebGIS is executed, and the operation of the GIS of the marine forecasting product consistent with sender, each user are completed
Operation and data do not clash mutually, and guarantee that the resulting result of each user and picture are consistent, it is real from sense organ
The multi-user collaborative operation of existing human-computer interaction.
2. a kind of marine forecasting man-machine interaction method based on GIS simultaneous techniques according to claim 1, feature exist
In in the step S1, browser is Chrome browser, and corresponding browser plug-in is Chrome plug-in unit.
3. a kind of marine forecasting man-machine interaction method based on GIS simultaneous techniques according to claim 1, feature exist
In in the step S3, GIS operation includes map scaling, Map roaming, geometrical analysis, point/line/face edit operation.
4. a kind of marine forecasting man-machine interaction method based on GIS simultaneous techniques according to claim 1, feature exist
In the inspection of the authenticity of GIS operation is to carry out self-test using the command information that GIS platform carries.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110472170A (en) * | 2019-07-19 | 2019-11-19 | 恒锋信息科技股份有限公司 | A kind of method and system accessing three-dimensional security platform based on browser plug-in |
| CN111190990A (en) * | 2020-01-02 | 2020-05-22 | 中电投电力工程有限公司 | Automatic GIS drawing method suitable for weather forecasting system |
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| CN113359989B (en) * | 2021-06-04 | 2022-06-10 | 福建华网信息科技有限公司 | Web GIS-based marine forecast human-computer interaction system |
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| CN113704590A (en) * | 2021-09-06 | 2021-11-26 | 挂号网（杭州）科技有限公司 | Webpage data acquisition method and device, electronic equipment and storage medium |
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