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3 votes
3 answers
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Deselecting duplicate records in QGIS Attribute table

Several SE-GIS posts describe how to identify duplicate records, such as Identifying duplicate attributes in field using QGIS. I would like to extend this concept by unselecting any duplicate records ...
Stu Smith's user avatar
  • 8,192
2 votes
1 answer
50 views

Fix "folded" polylines using FME

I have a dataset with polylines. For some reason the polylines are drawn back and forth multiple times. You can regard the lines as folded. The number of lines the runs back and forth varies from line ...
Meatball's user avatar
  • 121
1 vote
1 answer
40 views

Delete duplicate features by value and relative position in QGIS

I have a point layer with features of which some share the same date (fieldname: 'Datum' with format: "dd.MM.yyyy"). The date that is shared by some features is not a single specific one but ...
Hannes's user avatar
  • 129
2 votes
1 answer
48 views

Compare field attributes

I am using ArcMap 10.8.2. I have two point layers from different sources which contain the educational facilities of Catalonia. Each layer may contain facilities that are not contained in the other ...
JoanB's user avatar
  • 143
0 votes
1 answer
45 views

Geodatabse 'ghost' feature dataset and feature layer duplicates

Long story short, I reprojected my data into WGS 84 without realizing they would be exported into the same master source gdb, deleted the duplicates, but now see ghost duplicates of feature datasets ...
tmo's user avatar
  • 61
1 vote
3 answers
195 views

Remove partly overlapping geometries from service area in QGIS

In QGIS, Service area (from point) or Service area (from layer) geoprocessing tools create 1 resp. n multipart line features which (usually) contain many overlapping sections. Most of them can be ...
winnewoerp's user avatar
  • 1,504
1 vote
1 answer
54 views

Creating relation for duplicate lines

I have two datasets with some duplicate lines. I can select the duplicates with GRASS v.select: v.select ainput=map1 binput=map2 output=duplicates operator=equals or QGIS Select by Location: ...
Jeshua Lacock's user avatar
2 votes
1 answer
126 views

Merging multiple records into 1 record, group by field 'group'

I have a point geometry file (GeoPackage) which I am working with in QGIS. It contains tens of thousands of records which discuss the topic 'Mineral occurrences'. Within this point file exist ...
FlyHi's user avatar
  • 29
3 votes
2 answers
195 views

Joining vector layer with CSV-file that contain duplicates in QGIS

I'm currently working on a project, and I received a CSV file which has additional information about each feature. I intend to join the CSV file with an existing layer. Picture it like this: However, ...
eafwnrg's user avatar
  • 51
0 votes
1 answer
339 views

Merge two spatial polygon data frames that have the same geometries and different attributes introduces duplicates/additional row names in R

I have two multi polygon data frames that originate from the same spatial data frame. So, the polygons should be exactly the same. I calculated some stuff and now I have used st_join as follows: ...
user18791303's user avatar
1 vote
0 answers
87 views

How QGIS's "Remove duplicate nodes" actually works

I am working on digitizing a large number of polygons using stream digitizing, which sometimes creates duplicate nodes. I noticed that in "Layer Properties>Digitizing>Automatic Fixes" ...
Tkerr1's user avatar
  • 11
0 votes
3 answers
266 views

Delete numerically equivalent raster layer in R

When I download a raster from a WMS, I get three numerically identical layers. Is there a method with the terra package to find and remove equal layers? I could keep only the first layer, but I'm also ...
Paul Carteron's user avatar
1 vote
1 answer
403 views

Selecting and removing polygons that overlap within a single GeoDataFrame in Python

I have a GeoDataFrame made of polygons- some overlapping, some not (see picture above). I'd like to create a shapefile or GeoPackage of only the polygon centroids that are not overlapping. There is a ...
user2031's user avatar
  • 221
1 vote
1 answer
348 views

Removing multiple lines in close proximity in QGIS

I tried a suggestion to create buffer for each line (say a 10mtr buffer) Combine all the buffers of all lines using dissolve Try to get centerline of the combined polygon (this is where i failed... as ...
Akhilesh jj's user avatar
2 votes
0 answers
126 views

Deleting large number of duplicates in attribute table in QGIS

In QGIS 3.22 I have a vector file with about 9000+ objects and for some reason, each of them has duplicates. Which way can I find on QGIS to remove duplicates which have the same object "ID" ...
Robagb's user avatar
  • 447
0 votes
1 answer
674 views

Removing repeated commas with ArcGIS Survey123

I have created a form in ArcGIS Survey123. I have several field where you can enter multiple numbers from a select_multiple question. I then want to put all of those numbers into a single string. So I ...
OwlExpression's user avatar
2 votes
0 answers
565 views

Removing duplicate records in the Attribute table using QGIS

I need to remove the duplicate objects in my attribute table (see the image attached), but I can't find a way to do so. I saw questions asked with python that it NOT relevant to my case
Robagb's user avatar
  • 447
3 votes
3 answers
948 views

Comparing two different layers with duplicates in QGIS

I'm trying to compare 'layer A' with 'layer B'. Layer B is the result of the intersection between layer A and another layer C, so the elements in B are all contained in A. My goal is to create a new ...
anea's user avatar
  • 161
6 votes
2 answers
696 views

Removing duplicates from string in QGIS

In QGIS 3.18 in a shapefile attribute table, I have some fields with concatenated values (with commas , as the delimiter). Some of the values are duplicate, and I would like to remove them. For ...
pete's user avatar
  • 1,101
0 votes
1 answer
76 views

Count then remove similar polygon features

Is there a feature, preferably in OGR, that will remove duplicate polygons and add a count of duplicates to the remaining features attribute field?
Steven Lutz's user avatar
6 votes
2 answers
2k views

Selecting duplicate records in PyQGIS

I have a lot of coordinates in the attribute table like this one: I'm looking for a way how to find and select active layer duplicated points using PyQGIS. I needn't delete them but only find and ...
Artec's user avatar
  • 982
16 votes
4 answers
27k views

Removing duplicate point features using QGIS

I have created many .gpx data with my Garmin device, but due to the amount of data, I have imported the mapping data from my device several times (also because I didn't want it to be lost). As a ...
Lukas's user avatar
  • 737