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?

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