All Questions
117
questions
2
votes
3
answers
3k
views
Assigning each point name of polygon in which it lies using QGIS?
I am completely new to QGIS, and to the world of shapefiles and GIS in general.
I have the shapefile of a city, divided into its districts. On top of it I add a layer from a csv, with a certain ...
- 175
0
votes
1
answer
1k
views
QGIS - Lakes - Change Polygon Z values, using Single Field Value
I want to change all the elevation of the polygons of a shapefile using the field value ELEV from each polygon. So each vertex of each polygons as all the same Z (elevation). Anyone knows how to do ...
2
votes
2
answers
1k
views
Merge multiple buffer files to already available shapefile in QGIS 2.18.2
I want to merge multiple buffer file to already available shapefile but I'm not sure how to do it. I already applied vector->Data management tools->Merge vector layers, but this is not giving me ...
- 33
1
vote
1
answer
653
views
Creating shape around Europe especially France using QGIS?
I want to create shape around Europe especially for France. But I'm not really sure how to do it as I am new in QGIS. Can I get any good suggestion for this task?
I'm attaching a picture which shows ...
- 33
1
vote
2
answers
827
views
Create a buffer for polygons that meet a condition with QGIS
I have a layer with polygons, and I want to make a buffer but only for the ones that meet a condition ("MUNICIPIO"=5). When I make a fixed distance buffer, it makes a buffer for all the polygons in ...
- 143
1
vote
0
answers
73
views
Automatically deleting lines within generated polygon using QGIS?
How do I automatically delete lines within a generated polygon?
what I have: is a polygon with lines within. The lines I want to be deleted automatically -- like a auto clean up.
This is what I did: ...
- 11
1
vote
0
answers
89
views
Output Error from SimpliPy in QGIS
I am trying to simplify a polygon layer of parliamentary constituencies in Kenya using SimplyPy in QGIS and appear to be getting an erroneous result.
The method is working for most of the polygons ...
- 531
1
vote
1
answer
4k
views
Extract Polygon Coordinates from Shapefile data
I have some building data (polygons) as a shapefile in QGIS 2.18. I'm trying to add a location coordinates (the polygons rough center) and an array of the polygons coordinates (its points). I've been ...
- 113
3
votes
1
answer
2k
views
Finding polygons inside polygons from a shapefile in QGIS
I have a parcels shapefile that contains polygons. Condos are also drawn, but inside the master lot. I want to be able to grab all the condos inside the master lot. I saw this question/answer:
...
- 58
7
votes
2
answers
2k
views
Calculating shortest distance between points within polygon using QGIS?
I performed a transect in which I sampled several animals. The location of these animals are represented by a point shapefile. I am interested in calculating a pairwise matrix of distance (in meters) ...
- 371
7
votes
1
answer
10k
views
How to make a multi color map with one shapefile layer in QGIS?
I am working with a shapefile layer of the world. All the countries are in the Attribute table each one in a different row.
I tried to make each polygon in a different color so the countries will be ...
- 2,857
2
votes
1
answer
4k
views
Calculating polygon area inside another polygon in QGIS
Is it possible to calculate the area of colorful polygons (yellow, yellowish/reddish and red) inside another shapefile (purple outline, also polygons) in QGIS.
For example the polygon that is marked ...
- 91
4
votes
3
answers
25k
views
Merging attribute and geometric features in QGIS?
I have polygons shapefile in which some of the polygons have same attributes as seen below:-
In QGIS, how do I merge the polygons having the same attributes into one polygon?
In other words, am ...
- 275
3
votes
0
answers
82
views
QGIS - Layer missing polygons after pointsfile transformation
I'm using pointsfile transformation in QGIS for the georeferentiation of my layers. After the transformation the result some times has polygons missing like here:
Why is this happening? How do I ...
- 65
3
votes
1
answer
2k
views
My SHP file does not appear on my base map
I am using QGIS 2.18.3 with a base map named Natural_Earth_quick_start_for_QGIS
I use Australian Albers EPSG: 3577
When creating a bunch of polygons on my base map, my QGIS suddenly stopped working. ...
- 31