Joins
What they are why there are useful different kinds can join geospatial layers or non geospatial layers
Join attributes by field value
how to find key attribute
Spatial Joins
- Join attributes by location
- Join attributes by location (summary)
- Join attributes by nearest
Virtual Layers
- Build virtual layer of vectors many to one etc - eg bc dls grid
- Build virtual raster layer
Notes - How intersect can be a work around
Example: Join artists with public art
data layers are two different types check attribute tables… what could be common key, what issues do you notice? (artist ID, artists; 1 to many join; artist IDs are integers whereas artist field is text) what join will you do and what will you have to do in preparation for join?