2

I want to display the cluster size with a condition : I don't want to display this information for small clusters. The expression is working fine but I don't know I can add else...

case 
when @cluster_size > 30 then @cluster_size
end

Is my case, cluster size of the clusters with a size > 30 are displayed. BUT cluster <30 are labelled with a A letter AND I want to display NOTHING.

Not working :

case 
when @cluster_size > 30 
then @cluster_size
else @cluster_size = NULL
end

Returns me 0 but not empty :

case 
when @cluster_size > 30 
then @cluster_size
else @cluster_size = ' '
end

If I remove A letter from the assistant, nothing is displayed.

enter image description here

6
  • What do you want to display in Else condition?
    – ahmadhanb
    May 3, 2020 at 7:35
  • @ahmadhanb I want to display nothing
    – Wilcar
    May 3, 2020 at 7:40
  • 1
    Have you tried Else NULL?
    – ahmadhanb
    May 3, 2020 at 7:41
  • @ahmadhanb not working : case when @cluster_size > 30 then @cluster_size else @cluster_size = NULL end
    – Wilcar
    May 3, 2020 at 7:45
  • 1
    I think it should be just '' to display empty text instead of NULL
    – ahmadhanb
    May 3, 2020 at 7:51

1 Answer 1

4

I am not sure what is wrong in your case but I can confirm that Else '' removed the A and got empty cluster:

case 
when @cluster_size > 30 then @cluster_size
else ''
end

enter image description here

Output

enter image description here

I am using QGIS 3.10.4.

1
  • 1
    I used wrong syntax
    – Wilcar
    May 3, 2020 at 8:45

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