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1answer
31 views
+50

Showing z scale with shaded relief instead of colour scale?

I've got a .flt file with a z value (height), when displayed this gives me a scale based on the z value. To better visualize the data I want to apply a shaded relief function to the data, but when I ...
3
votes
2answers
144 views
+100

Populate line's attribute fields with attributes from point features snapped to their start_point or end_point

I have a line layer (MultiLineString) and 4 point layers (MultiPoint). My line layer has 2 attribute fields, start_pt and end_pt, I need them populated with an identifier attribute (string data ...
2
votes
0answers
67 views
+50

Using FieldValueConverter() in PyQGIS to export table with displayed values option (ValueRelation), get ValueRelationCache error

I'm trying to export the content of various tables and use displayed values (stored in a ValueRelation) instead of the raw value. Following the comments, I realized I had to create the ...
1
vote
1answer
60 views
+50

Loading another QGIS processing algorithm window from processing algorithm

QGIS Processing class has a method execAlgorithmDialog() that opens the dialogue window of any processing algorithm. I am writing a Plugin that has a processing algorithm Run Analysis, I also need to ...
0
votes
0answers
17 views
+50

How to store historical value of a raster pixel in postgis raster datatype?

I have a postgres table to store rasters having elevation value in each pixels. the raster size on average is around 100x100 with scale of 1. The elevation value is historic and I store timestamp in ...