Questions tagged [qgis-field-calculator]

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Replace few symbols in all strings using QGIS Field Calculator?

I created the "Photos" column in the attribute table. Each line contains a unique path to a specific photo. For example: D:/.../IMG0031.JPG D:/.../IMG0048.JPG Now I need to replace the path for ...
3
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0answers
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QGIS get number of unique values within geometry of a different layer

I have a grid-layer (polygon) and a point-layer. The points that lay within a grid-cell have the same unique id like the grid cell. they also have an attribute "year". What I want is to create a ...
2
votes
0answers
47 views

Include only selection of a layer in a QGIS aggregate formula in field calculator

The following collects the chainage along a road at the start of a segment. aggregate(layer:='DSC_Roads_10m_Chainage.tab', aggregate:='max', expression:="distance", filter:= intersects(...
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2answers
189 views

QGIS Field Calculator Aggregation with a intersect query

I have point (manholes) and line (sewer main) datasets and want attributes from the points at both ends of the line. If I run the following after I install RefFunctions in field calc on the line ...