All Questions
117
questions
0
votes
0
answers
26
views
"ERROR: 22001: value too long for type character varying(6)" for polygon shapefile
I am facing an error
ERROR: 22001: value too long for type character varying(6)
while uploading a shapefile to online govt. portal. When I asked the person only mentioned that there is problem with ...
- 1
2
votes
0
answers
60
views
Why are there so many slivers in my polygon shapefile?
I georeferenced a map and then traced a vector polygon shapefile over it, but when I dissolve it I am left with an enormous amount of slivers. All the vertices are snapped as far as I'm aware. What ...
- 343
2
votes
1
answer
140
views
How to identify holes of missing geometry enclosed within a polygon in QGIS?
I want to locate or highlight all the holes (invalid interior rings that do not connect at all vertices and edges) and redundant geometry in a polygon shapefile in QGIS so that I can go back and ...
- 343
-1
votes
2
answers
185
views
Locate or find holes tool in QGIS for polygon shapefiles [closed]
I want to locate or highlight all the holes (invalid interior rings that do not connect at all vertices and edges) and redundant geometry in a polygon shapefile in QGIS so that I can go back and ...
- 343
2
votes
0
answers
37
views
Merging smaller polygons into bigger surrounding polygons in QGIS [closed]
I am using QGIS 3.34.2 (Prizren). I am using a village-level shapefile which I downloaded from SHRUG. I have to use only the villages in West Bengal for an analysis. Furthermore, I need to combine the ...
- 31
0
votes
0
answers
39
views
Problem with create line tool in QGIS, creates an undeletable line that is not part of any layer
I was attempting to edit a shapefile layer in QGIS. I used the "create line tool" and started to sketch out a shape. I didn't like how it was turning out and tried to cancel it by pressing &...
0
votes
1
answer
49
views
What is meaning of extra bytes in .shp file or how to calculate content length
I'm trying to read a .shp file. That .shp file contains polygon type. So I read all the records perfectly, after the reading the points, end of the file that have some 28 bytes are there what is ...
1
vote
1
answer
131
views
Create a map of time since fire in QGIS
Using QGIS I want to create maps which visualise the fire history of an area, in particular the time since the last fire.
I have a shapefile which contains polygons of each fire that has occurred in ...
- 51
0
votes
0
answers
44
views
Buffer output issue QGIS
I'm using QGIS 3.18 version. I tried to use the buffer tool with the centerline (provided for a sample) of the road.
I found overlapping of buffer polygons and some unusual shapes of polygons too. I ...
2
votes
0
answers
49
views
QGIS highlighted cell issues
Does anyone know why this is occurring? I obviously want the yellow highlighted polygon boundary to be always on top. Currently, the non selected shared boundaries are rendering on top of the ...
- 21
2
votes
1
answer
174
views
Creating new layer with custom regions from states boundaries in QGIS
I am trying to create a map where I can combine a layer of states boundaries and one other with custom regions (Est/West) on QGIS.
So I have tried it in different ways (union, intersection, merge ...
- 21
1
vote
1
answer
647
views
Data from map and attribute table disappeared after saving
I am relatively new to QGIS and have been doing some simple georef and digitising work. At the start I lost a lot of data, as I hadn't saved properly, and I have been constantly saving ever since.
...
- 13
3
votes
1
answer
505
views
Merging polygons of different layers with QGIS
On a map, I've created several polygons to mark some areas. Each polygon (shapefile) is on its own layer.
How can I merge the polygons, so that one layer consists of multiple polygons?
I can't select ...
- 75
1
vote
3
answers
633
views
Export polygon from shapefile as type: 'Polygon' (not type: 'MultiPolygon')
From a shapefile I try to export the contained polygons to GeoJSON. This works fine with right click on the layer > Export > Save as ... > Format: Geojson. The exported file then looks like ...
- 25
1
vote
1
answer
903
views
Deleting lines in polygon shapefile using QGIS
I have a polygon shapefile. After dissolving a few polygons I got some unrequired lines inside one of the polygons that I couldn't delete. When using the vertices tool the lines don't show and ...
- 25