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Results tagged with duplication
Search options answers only
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user 107424
For questions related to creating, finding, or removing duplicate records or features.
3
votes
Accepted
Remove duplicate labels for parallel line features in QGIS 3
If your lines have different directions then you can use this filter:
angle_at_vertex($geometry,1) <= 180
So only one line gets labled. The one which first vertex has an angle lower than 180 degre …
6
votes
Accepted
Selecting duplicates records except one in QGIS
In QGIS you can use "Select by expression" with this expression:
array_contains(
array_remove_at(
array_agg($id, "field"),
0),
$id)
It will select all duplicates except for th …
7
votes
Accepted
Redistributing duplicated points inside the polygon
Here is how you can do this using a PyQGIS script. Open the Python-Console, copy paste the code, change your settings at the top of the code and hit run. You can also cancel the execution via QGIS-Tas …
3
votes
Eliminating duplicates only if data is the same according to attributes
You can also use some of the fuzzy matching expression.
Here an example using soundex:
As expression I am using $id = array_first(array_agg($id,soundex("name"))), which groups names by their soundex r …
2
votes
Eliminating duplicates only if data is the same according to attributes
Here are solutions in Python, the first one is a simple script using soundex and the second one a processing tool letting you choose which algorithm to use.
1. Soundex only
selecting all features of a …
5
votes
Selecting duplicate records except the first and last duplicate with Select by expression in...
You can use this with select by expression:
with_variable('arr',array_agg($id, "myfield"),
if($id in (@arr[0],@arr[-1]),false,true))
Or for older QGIS versions where index brackets are not supported …
14
votes
Accepted
Labeling only one duplicate attribute without editing original data in QGIS
You can achieve something like in the picture just below by using some expressions without editing any of your data. Just use them as they are.
Follow the steps below and adjust them to your personal …