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How to calculate attributes for SLD with GeoServer [duplicate]

When I use <ogc:Literal>5+5</ogc:Literal>, the calculation does not work. Is there a way to perform calculations in GeoServer SLD?
user247498's user avatar
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Polygon envelope. Contour and total surface

I'm starting out using ArcGIS and I don't know how to get the perimeter of a polygon set. The resulting layer has to be the total surface area of ​​the polygons that form it. could someone tell me how ...
JCarlos's user avatar
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QGIS - calculate area of intersecting features or features within Atlas_geometry

I have a layout controlled by atlas by parcel numbers. Within the parcel numbers are geometries from another layer "IAN". I would like to sum the areas of the geometries within the ...
Marek's user avatar
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1 vote
1 answer
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Google Earth Engine: Calculate protected areas with WDPA dataset

I want to calculate protected areas in a region. My procedure was to convert the WDPA data set into an image and then calculate the area using the reducer.sum function. My problem is that my pixel ...
Rodriguez 's user avatar
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1 answer
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Reprojecting before Calculating Area in Google Earth Engine

I want to calculate the area of forest loss in a region. Is it necessary to reproject first and, if so, is the following code for calculating the area correct? var Forest_Change = ee.Image("UMD/...
Rodriguez's user avatar
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Calculating specific sides/edges of polygons

I've a large dataset with different polygons totaling on 2372460 m2. I'm interesting in calculating the sides (in m1) of certain categories of polygons. A case would be the sides of a form of green-...
Maik's user avatar
  • 1
4 votes
1 answer
106 views

Measuring study area of elevational ranges in raster file in QGIS

I have a DEM layer with elevation ranges of -413-5593 m, just as seen below. Then I determined the altitude between 4100 and 5400 m using symbology and band rendering, got the map below and the ...
Sina Kh.'s user avatar
  • 153
3 votes
3 answers
594 views

QGIS - row numbers by location

Is there a possibility to add continuous numbers in a seperated row that based on their location? Like f.e. from north to south, or left to right. i used row_number, but the numbers seem to be ...
Marek's user avatar
  • 537
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1 answer
709 views

QGIS calculate area automatically

Is there a way to calculate area automatically when I edit a polygon? I mean, is there any function there I can use on area field and update itself when I finish editing?
Ma Fo's user avatar
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