CN107092663A - Based on GIS water level early warning mapping system and method - Google Patents
Based on GIS water level early warning mapping system and method Download PDFInfo
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- CN107092663A CN107092663A CN201710203402.5A CN201710203402A CN107092663A CN 107092663 A CN107092663 A CN 107092663A CN 201710203402 A CN201710203402 A CN 201710203402A CN 107092663 A CN107092663 A CN 107092663A
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- water level
- survey station
- gis
- early warning
- water conservancy
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000013507 mapping Methods 0.000 title claims abstract description 9
- 238000005516 engineering process Methods 0.000 claims abstract description 17
- 238000000605 extraction Methods 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 5
- 238000010422 painting Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000009877 rendering Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/20—Information retrieval; Database structures therefor; File system structures therefor of structured data, e.g. relational data
- G06F16/29—Geographical information databases
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
- G09B29/003—Maps
- G09B29/006—Representation of non-cartographic information on maps, e.g. population distribution, wind direction, radiation levels, air and sea routes
- G09B29/007—Representation of non-cartographic information on maps, e.g. population distribution, wind direction, radiation levels, air and sea routes using computer methods
Abstract
GIS water level early warning mapping system and method are based on the invention discloses one kind, components of system as directed includes database, the water conservancy survey station for obtaining diverse geographic location；GIS modules, for extracting the data in database, the figure layer that be may be superimposed on by HTML5 Canvas technologies generation on map platform generates GIS water level early warning maps；Database and the GIS module is communicated by background server, its advantage is can dynamically to obtain the water level information of backstage water conservancy survey station, according to early warning value, draws the early warning figure layer being superimposed upon on map platform, the GIS water level early warning maps of generation have intuitive, readable.
Description
Technical field
GIS water level early warning mapping system and method are based on the present invention relates to one kind.
Background technology
In present Water Conservancy Information, the collection for water conservancy data is largely distributed out of doors, and different water conservancies are surveyed
In standing, illustrate the water conservancy data in survey station only with word, numeral, it is impossible to water level height is formed and intuitively experienced, after
Phase stills need table of drawing or do, and both wastes the plenty of time, and the continuous chart of dynamic can not be produced again.
The content of the invention
In order to solve the deficiencies in the prior art, GIS water level early warning mapping systems are based on the invention provides one kind, can
To realize the real-time display of water level in the survey station at diverse geographic location based on map platform.
The technical scheme is that：
One kind is based on GIS water level early warning mapping systems, including database, the water conservancy for obtaining diverse geographic location
Survey station；GIS modules, for extracting the data in database, map platform is may be superimposed on by HTML5 Canvas technologies generation
On early warning figure layer, generate GIS water level early warning maps；Database and the GIS module is communicated by background server.
The beneficial effect of the technical scheme is can dynamically to obtain the water level information of backstage water conservancy survey station, according to early warning
Value, draws the early warning figure layer being superimposed upon on map platform, and the GIS water level early warning maps of generation have intuitive, readable.
Further, water conservancy survey station table is set up in the database, water conservancy survey station table is stored with the survey of diverse geographic location
Water conservancy of standing information, the survey station water conservancy information includes longitude, latitude, survey station numbering, survey station name and threshold, its advantage
It is that water conservancy survey station can be accurately managed on map platform, it is directly perceived to show the water level information on different water conservancy survey stations.
Further, when sending operation requests to background server on GIS water level early warning maps, background server pair
Database operated corresponding to the extraction of solicited message, and the information composition Json format strings of extraction are returned into GIS
Water level early warning map, GIS water level early warning maps Json format strings according to setting protocol analysis, and show the extraction
Information using the beneficial effect of Json format strings is 1, be convenient to transmission, the character of less redundancy；Convenient conversion：Because
There are many json api to provide json character strings and change into the method that object, object are converted into json strings；3rd is to be easy to read
Read：The satisfactory texture of json codes, it is any content that can be visually known very much deposit.
Further, the survey station has presence and non-presence；Presence is with non-presence described
Presented in GIS modules by different display modes, its advantage is can to ignore not online survey station, makes the experience of user
More preferably, online or not online survey station is very clear for degree.
Further, the map platform can switch in satellite map and electronic map.
Present invention also offers a kind of GIS water level early warning method for drawing map based on said system, it is characterised in that：
Obtain the water conservancy survey station and its survey station water conservancy information of diverse location；
The water conservancy survey station is associated on the relevant position of map platform；
The water level of water conservancy survey station at the position is drawn in the corresponding position of map platform using HTML5 Canvas technologies
Early warning dynamic layer, generates GIS water level early warning maps.
Further, it is associated with latitude in the position of map platform according to the precision of the water conservancy survey station, difference of longitude and
Difference of latitude is respectively less than 0.25, and this correlating method can accurately arrange position of the survey station on map, and error is small, the degree of accuracy
It is high.
Further, reference axis, root are specially drawn using HTML5 Canvas technologies first in the drafting of map platform
According to the waterlevel data and threshold of Civil Engineering survey station, scale, warning line and current time are drawn in the reference axis
Water level, is the function of being more suitable for being similar to Flash for realizing using Canvas beneficial effect so that the readability of figure layer is more
It is good.
Further, circulate operation is carried out to the water level that current time is drawn according to the waterlevel data of Civil Engineering survey station,
Real-time water conservancy survey station Water level trend figure layer is obtained, its advantage is can to obtain water level information in real time, form dynamic GIS
Water level early warning map.
Further, the scale is changed according to different waterlevel data of each moment, and its advantage is can be with
The water level information of different scale is shown in the figure layer of same size, reader can pass through different scale combination water levels height
Understand current level information.
Further, using HTML5 Canvas technologies, the water level ups and downs centered on the water level at current time are simulated,
Generate dynamic effect；
Compared with prior art, the beneficial effects of the invention are as follows：
The early warning figure layer that be may be superimposed on using HTML5 Canvas technologies generation on map platform, generates GIS water level early warning
Map, must can be expressed the water level information of traditional word and numeral expression is vivid by way of map, in a map
In can place multiple survey stations, multiple online same times displayings of survey station, and water level shows in real time, by making to compare with early warning value
Compared with, intuitively find out current level whether exceed early warning line.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not constitute the improper restriction to the application.
Fig. 1 is the method for drafting flow chart of the invention based on GIS water level early warning maps.
Embodiment
It is noted that described further below is all exemplary, it is intended to provide further instruction to the application.Unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
HTML5 is the newest revision versions of HTML (Hyper Text Markup Language, HTML),
In October, 2014 completes standard formulation by W3C (World Wide Web Consortium), target be the HTML4.01 that is formulated for 1999 of substitution and
XHTML1.0 standards, to when the Internet, applications are developed rapidly network standard be made to reach that the network for meeting the present age is needed
Ask.When broad sense refers to HTML5, a set of skill including HTML, CSS (CSS) and JavaScript is actually referred to
Art is combined, and it wants to reduce web browser for RIA (Plug-in-Based Rich
InternetApplication is, it is necessary to the rich internet application of plug-in unit, such as Adobe Flash, Microsoft
Silverlight, Oracle JavaFX etc.) demand, and more multipotency be provided effectively strengthen the regular sets of the Internet, applications.
Canvas (painting canvas) is the important element increased newly in HTML5, is specifically used to drawing image, is placed on webpage
One Canvas element, is equivalent on webpage place one piece " painting canvas ", the description of image can be carried out wherein.HTML5
Canvas using script (be typically JavaScript) drawing image on webpage, in traditional standard resolution display device
In (abbreviation standard display device) front end Canvas arrange in pairs or groups JavaScript language write each pixel that drawing code is related to
The minimum display unit of display device is corresponded, and the image of final rendering output is here it is shown that can obtain relatively most clear in equipment
Clear effect.
In a kind of typical embodiment of the application GIS water level early warning mapping systems, bag are based on there is provided one kind
Database is included, the water conservancy survey station for obtaining diverse geographic location；GIS modules, for extracting the data in database, pass through
The early warning figure layer that HTML5 Canvas technologies generation may be superimposed on map platform, generates GIS water level early warning maps；The number
Communicated according to storehouse and GIS modules by background server.
The beneficial effect of the technical scheme is can dynamically to obtain the water level information of backstage water conservancy survey station, according to early warning
Value, draws the early warning figure layer being superimposed upon on map platform, and the GIS water level early warning maps of generation have intuitive, readable.
Here we use the day map increased income to map platform, while can be cut in satellite map and electronic map
Change.
Electronic map, i.e. numerical map, are to utilize computer technology, the map for storing and consulting in a digital manner.Electronics
The method that map stores information, general to use vector mode image storage, map scale is enlarging or reducing or rotates aobvious without influenceing
Show effect, early application bit map type storage, map scale can not be zoomed in or out, and hyundai electronicses map software typically utilizes geography
Information system stores and transmitted map datum, also there is other information systems.On July 9th, 2014, Tengxun's map 4.4 is
A kind of complete offline electronic map product.
Satellite map, is satellite remote sensing images, is also satellite image.So-called remote sensing, i.e., remotely perceive.Satellite remote sensing is
By satellite in reflection of the too aerial reconnaissance earth earth's surface object to electromagnetic wave and its electromagnetic wave launched, so as to extract these things
The information of body, completes remote identification object.These wave informations are changed, obtained image, as satellite mapping is recognized.
Set up water conservancy survey station table in database, water conservancy survey station table is stored with the survey station water conservancy information of diverse geographic location, surveys
Water conservancy of standing information includes longitude, latitude, survey station numbering, survey station name and threshold.
When sending operation requests to background server on GIS water level early warning maps, background server enters to database
Row is operated corresponding to the extraction of solicited message, and the information composition Json format strings of extraction are returned into GIS water level early warning
Map, GIS water level early warning maps Json format strings according to setting protocol analysis, and show the extraction information.
Into the GIS pages, send and ask to backstage, all qualified data are examined according to the request on foreground in backstage
Rope comes out, and is organized into the character string of Json forms, is returned to foreground.Foreground is received after data, according to the agreement appointed, solution
The data of Json forms are analysed, by corresponding data display on foreground.
It is 1 using the beneficial effect of Json format strings, is convenient to transmission, the character of less redundancy；Convenient conversion：Cause
The method that object, object are converted into json strings is changed into there are many json api to provide json character strings；3rd is to be easy to
Read：The satisfactory texture of json codes, it is any content that can be visually known very much deposit.
Survey station has presence and non-presence；Presence passes through with non-presence in the GIS modules
Different display modes are presented.Its presentation mode can be that online survey station is the mark that green signal flashes, but not online
Survey station be red signal mark.
When the corresponding GIS map that user opens, what is heaved in sight is survey station presence, and online survey station is green
The mark of signal flicker, but not online survey station is red signal mark.It is very clear.
Another embodiment of the application：A kind of GIS water level early warning method for drawing map based on said system, its feature
It is：
Obtain the water conservancy survey station and its survey station water conservancy information of diverse location；
The water conservancy survey station is associated on the relevant position of map platform；
The water level of water conservancy survey station at the position is drawn in the corresponding position of map platform using HTML5 Canvas technologies
Early warning dynamic layer, generates GIS water level early warning maps.
It is associated with latitude in the position of map platform according to the precision of the water conservancy survey station, difference of longitude and difference of latitude are small
In 0.25.
Reference axis is specially drawn using HTML5 Canvas technologies first in the drafting of map platform, according to current water
The waterlevel data and threshold of sharp survey station, draw scale, warning line and the water level at current time, to root in the reference axis
The water level for drawing current time according to the waterlevel data of Civil Engineering survey station carries out circulate operation, obtains real-time water conservancy survey station water level
Dynamic layer, scale is changed according to different waterlevel data of each moment.
Further, using HTML5 Canvas technologies, the water level ups and downs centered on the water level at current time are simulated,
Generate dynamic effect.
It is pre- as GIS water levels using early warning figure layer of the stackable generation of the technical scheme of the present embodiment on map platform
Alert map so that the traditional word and water level information of numeral expression is vivid to be expressed by way of map, in a map
In can place multiple survey stations, multiple online same times displayings of survey station, and water level shows in real time, by making to compare with early warning value
Compared with, intuitively find out current level whether exceed early warning line.
The preferred embodiment of the application is the foregoing is only, the application is not limited to, for the skill of this area
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent substitution, improvement etc., should be included within the protection domain of the application.
Claims (10)
1. one kind is based on GIS water level early warning mapping systems, it is characterised in that：Including database, for obtaining different geography
The water conservancy survey station of position；GIS modules, for extracting the data in database, are generated stackable by HTML5 Canvas technologies
Figure layer on map platform, generates GIS water level early warning maps；Database and the GIS module is communicated by background server.
2. system according to claim 1, it is characterised in that：Water conservancy survey station table, water conservancy survey station are set up in the database
Table is stored with the survey station water conservancy information of diverse geographic location, and the survey station water conservancy information includes longitude, latitude, survey station numbering, surveyed
Name of station and threshold.
3. system according to claim 1, it is characterised in that：Sent out when on GIS water level early warning maps to background server
When sending operation requests, background server carries out operating corresponding to the extraction of solicited message to database, and by the information group of extraction
GIS water level early warning maps, GIS water level early warning maps Json according to setting protocol analysis are returned into Json format strings
Format string, and show the extraction information.
4. system according to claim 3, it is characterised in that：The survey station has presence and non-presence；
Wire state is presented from non-presence in the GIS modules by different display modes.
5. it is a kind of based on, based on GIS water level early warning method for drawing map, its feature exists any one of claim 1-4
In：
Obtain the water conservancy survey station and its survey station water conservancy information of diverse location；
The water conservancy survey station is associated on the relevant position of map platform；
The Water level trend of water conservancy survey station at the position is drawn in the corresponding position of map platform using HTML5 Canvas technologies
Figure layer, generates GIS water level early warning maps.
6. method according to claim 5, it is characterised in that：According to the precision of the water conservancy survey station associated with latitude its
The position of map platform, difference of longitude and difference of latitude are respectively less than 0.25.
7. method according to claim 5, it is characterised in that：Using HTML5 Canvas technologies painting in map platform
Fixture body, according to the waterlevel data and threshold of Civil Engineering survey station, is painted to draw reference axis first in the reference axis
Scale making, warning line and the water level at current time.
8. method according to claim 7, it is characterised in that：To drawing current according to the waterlevel data of Civil Engineering survey station
The water level at moment carries out circulate operation, obtains real-time water conservancy survey station Water level trend figure layer.
9. method according to claim 5, it is characterised in that：The scale enters according to different waterlevel data of each moment
Row changes.
10. method according to claim 5, it is characterised in that：Using HTML5 Canvas technologies, simulation with it is current when
Water level ups and downs centered on the water level at quarter, generate dynamic effect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710203402.5A CN107092663B (en) | 2017-03-30 | 2017-03-30 | Water level early warning map drawing system and method based on GIS |
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| CN201710203402.5A CN107092663B (en) | 2017-03-30 | 2017-03-30 | Water level early warning map drawing system and method based on GIS |
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| CN107092663A true CN107092663A (en) | 2017-08-25 |
| CN107092663B CN107092663B (en) | 2020-11-13 |
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Cited By (1)
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2017
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| CN105005571A (en) * | 2014-04-23 | 2015-10-28 | 国家电网公司 | Method and apparatus for supporting visual representation of intelligent power consumption information |
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