MapServer | Map TMS Server - 离线地图瓦片服务 | Map library
kandi X-RAY | MapServer Summary
kandi X-RAY | MapServer Summary
Map TMS Server - 离线地图瓦片服务
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Top functions reviewed by kandi - BETA
- Init map
- Adds the configuration for the specified type
- Convert a longitude coordinate to Google MercatorInfo
- Gets the LevelInfo for a given zoom level
- Get image from url
- Get a picture
- Builds the URL to retrieve the URL
- Get level info
- Get image
- Gets the path by type
- Get the background type by name
- Gets the map config
- Read file by UTF - 8
- Makes GET request
- Get url
- Read the slide info from the specified file
- Read a file by line
- HTTP POST request
- Send GET request
MapServer Key Features
MapServer Examples and Code Snippets
Community Discussions
Trending Discussions on MapServer
QUESTION
I am using a date slider that is dynamic on the selection of year from the UI. The slider options are nested in tabPanel but when the year is changed the date does not react. I don't understand how to get the observeEvent to relay the new date. The old date can be seen in the terminal from the discrepancy of print(input$range) vs print(input$year) when the year is changed to 2018. Any help is greatly appreciated!
ANSWER
Answered 2022-Jan-31 at 08:31In my opinion, I think the conflicts is due to both inputs having the same id "range". By giving them different id, it works for me.
I made the following changes :
- give the sliderInputs different id, i.e "range1" and "range2" instead of "range".
In parameter_tabs
QUESTION
I'm trying to query this API, filtering by the RptDt field, which is type esriFieldTypeDate.
The basic query looks like this:
...ANSWER
Answered 2022-Jan-18 at 17:41The correct format is 'YYYY-MM-DD'. This query works. The relevant bit is where=RptDt>'2022-01-01'.
QUESTION
I keep trying different methods to check if this JSON contains "attributes." In this way I can determine if the given coordinates are outside of wetlands. If they are in wetlands, "attributes" will exist in the JSON. If they aren't in wetlands, 'attributes' won't be in the JSON.
When I run this function, I am only getting TRUE - when I type in coordinates that are in a wetland (try 43.088 instead, in the JSON url, which returns true).
However I want FALSE for the given url. For some reason when I do console.log("FALSE"), this doesn't appear or return in the console at all if hasOwnProperty('attributes') == false.
Am I missing something?
...ANSWER
Answered 2022-Jan-14 at 22:56The issue is that in the response data['features'] is empty. When iterating over an empty array, nothing within the for...of loop is executed.
QUESTION
I am trying to get a raster layer (5-metre Digital Elevation Model (DEM)) from the Australian government through the ArcGIS REST API
url: https://services.ga.gov.au/site_9/rest/services/DEM_LiDAR_5m/MapServer/
I can perform a query for the boundary and footprint layers with good results
boundary query:
"https://services.ga.gov.au/site_9/rest/services/DEM_LiDAR_5m/MapServer/1/query?where=&text=&objectIds=&time=&geometry=xmin:133.226100657682, ymin:-23.6165145646468, xmax:133.235899342318, ymax:-23.6074854353532&geometryType=esriGeometryEnvelope&inSR=4283&spatialRel=esriSpatialRelEnvelopeIntersects&relationParam=&outFields=&returnGeometry=true&maxAllowableOffset=&geometryPrecision=&outSR=&returnIdsOnly=false&returnCountOnly=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=&returnZ=false&returnM=false&gdbVersion=&returnDistinctValues=false&f=json"
response (plotted in R):
R plot through jsonlite response
Footprint query:
"https://services.ga.gov.au/site_9/rest/services/DEM_LiDAR_5m/MapServer/2/query?where=&text=&objectIds=&time=&geometry=xmin:133.226100657682, ymin:-23.6165145646468, xmax:133.235899342318, ymax:-23.6074854353532&geometryType=esriGeometryEnvelope&inSR=4283&spatialRel=esriSpatialRelEnvelopeIntersects&relationParam=&outFields=&returnGeometry=true&maxAllowableOffset=&geometryPrecision=&outSR=&returnIdsOnly=false&returnCountOnly=false&orderByFields=&groupByFieldsForStatistics=&outStatistics=&returnZ=false&returnM=false&gdbVersion=&returnDistinctValues=false&f=json"
response:
where I got the name of TIF files I am looking for, nevertheless all my queryes to the raster layer: https://services.ga.gov.au/site_9/rest/services/DEM_LiDAR_5m/MapServer/3 does not give me any result
I have tried the rcran package "arcpullr" as well, but no results
any help?
...ANSWER
Answered 2022-Jan-04 at 17:01So most likely data provider has disabled the query operation on the 3rd layer of that map service. Also, no fields are enabled on the layer 3, so there is nothing to query or return through a query operation.
So only export operation would work on that by providing a bbox (which you can use also by using the results of the footprint layer).
QUESTION
In the modularized shiny app below Im trying to display a message when the app is loaded for first time and then when I click the actionButton() this message is being hidden using shinyJs() and the plots are displayed. But the message is not displayed from the beginning.
ANSWER
Answered 2022-Jan-03 at 18:57Three things are wrong:
- you use
renderUI()but you haveverbatimTextOutputin the UI part. You need to useuiOutput()instead - you forgot to call
textUI("textPL")in the UI part - you want to hide the text when
input$actionis clicked, but this input is defined in another module. Therefore it has a different namespace and clicking it doesn't triggerhide(). You need to pass the "click" through modules. There's a similar post about that here.
Next time, you should also provide a minimal example, there is a lot of code that is irrelevant to the problem here.
Here's the working code:
QUESTION
In the modularized shiny app below I want to create one map which is created and one plot below the map. The 2 visualizations are based on 2 different dataframes though and I do not know exactly how display them both.
...ANSWER
Answered 2022-Jan-03 at 13:19- You have
plotlyOutput(ns("plot"))in different module thanserverwhere isoutput$plot<-renderPlotly({(the latter is inplotServerwhile ui output is inmapUI). I decided to make newuiforplotServer, but you can also try to move elements fromplotServerintomapServer. - As you said, the problem is with returning multiple elements. But not just two dataframes, also some input. To return more than one element, you need to create list, say like this:
return(list(element1 = _object_to_return1, element2 = _object_to_return2)). - I said above "return some input", that's because here:
fig%>% layout(title = paste("Count of",input$sci ,"through the years")you are using input, but input from different module. As you already know, you do not have direct access to objects from different modules and the same is withinputs. That means you need to returninputas well, butinputneeds to be wrapped intoreactive()function. In your case, when there is module with tworeturns function, it should be one and look like this:return(list(react = react, counted = counted, sci = reactive(input$sci))). - Now, because you have returned list, you need to access elements inside this list as normal elements from list, so when you pass arguments to function, it won't be
reactas previously, butcity_input$react. You also need to add parameters to the server function - not justcity, but also parameter forcounteddataframe andinput. - In case it won't be obvious for you - to access input from other module (after passing as argument) you access it as a normal function, so below you can see that I use
sci()instead ofinput$sci
Here is full code:
QUESTION
In the shiny app below I use shiny modules to create a leaflet map. The issue is that the one of the 2 widgets that interact with the map is dependent on the other so I need to use uiOutput() for them but I do not think that they communicate well since the dataset that they should have created is not created.
...ANSWER
Answered 2022-Jan-03 at 11:47Here is improved version:
QUESTION
I have the simple shiny app below in which I create a leaflet map. I would like to create a shiny module though that would specifically create the leaflet map.
...ANSWER
Answered 2022-Jan-03 at 10:11You have made some mistakes.
Below is code without these mistakes:
QUESTION
I want to use leaflet map kit in xamarin.forms uwp project. For that I have created index.html file in pcl project. But when I'm trying to read that file it always returns null.
index.html ...ANSWER
Answered 2021-Dec-23 at 19:46It worked in original because LeafletMap is the assembly name. Presumably, your project has a different name, e.g. MyProject.
Change
QUESTION
I am trying to change the color of my GeoJSON-Layer on every click in my Ionic React App, but I only managed to change it once for the first click... My idea was to change the color between blue and red everytime a feature is clicked. I had the idea to check for the color in the options of the GeoJSON-Layer, but as written, it only changes the color once for the first click and afterwards nothing happens on any other click.
ANSWER
Answered 2021-Nov-06 at 15:50There is a really much simpler way to achieve the desired behavior. I can give an example using one geojson and then you can adjust it to your needs.
You need to reset geojson style after each layer click. You can achieve that by taking a geojson reference using react ref and leaflet's resetStyle method. And regarding the change of the style you only need to set the color after each click. No need for if statements there.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install MapServer
You can use MapServer like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the MapServer component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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