New answers tagged symbology
@ChrisW said: As far as I know and can find evidence for, you cannot set a classification range below the minimum value in the data. This got me thinking, and I actually found a way to set the classification range below the minimum value. My original issue was built around the fact that the lowest classification range was required to contain the ...
You can create a symbology of unique values for a layer without actually having a value occur in the dataset. you could use 'group values' (ctrl+select values and right click) to take all the possible values that indicate category 'A' in any given file. This way, you could have a single symbology that covers all possibilities from each dataset without ...
I believe this is about feature legend but not rasters. If this is about rasters disregard my suggestion. I usually use these: Merge 2 (or more shapefiles) CHILDS into one, let's call it FAMILY create legend for FAMILY import symbology for every CHILD from FAMILY Hope it helps, FP
While the classification uses similar ranges, the data don't share a range. I think the solution here is to solve it in the legend and color assignments, and not the actual classification. Start with your lower left result, and convert that legend to a graphic. Edit the text to get the ranges you want. I notice all your other images have a 10 unit range, ...
This is a possible solution (i.e. I don't guarantee it will solve your problem but it's worth trying): The clue I picked up was in the bug report linked by Gene. It appears to be a bug in the stand-alone installer. I always use osgeo4w and don't have the problem - so maybe this is a possible solution. If you don't want a ton of other software installed ...
I solved the problem, thanks to @Underdark. The error was in the instruction qgsVectorLaye: myVectorLayer = QgsVectorLayer(uri.uri(), "allcountries", 'postgres')
myVectorLayer = QgsVectorLayer("polygon", "mypoly", 'ogr') does not create a valid vector layer, therefore mySymbol1 = QgsSymbolV2.defaultSymbol(myVectorLayer.geometryType()) does not return a valid symbol and causes the error you see. Replace "polygon" with a valid file path.
As far as I know you cannot symbolize based on related tables out of the box. There are various solutions including joining tables and populating fields with arcpy cursors, but I doubt any would be satisfactory for what you describe other than creating your own renderer with ArcObjects. There is a sample multivariate renderer that would give you a good ...
If you're writing a geoprocessing script, I'd recommend authoring a .lyr file you bundle with your toolbox and set the symbology in the script tool parameters to point to the .lyr file (see the "Symbology" part of the dialog).
There are a couple of ways I could think of to do it in the Symbology tab, which won't affect your original raster values: Set each of the classes to the same color. Select the five classes you want to consolidate. Right-click, and choose "Group Values." (This is described in "Combining Categories" for grouping vector data, but it also works for raster ...
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