All Questions
42
questions
0
votes
1
answer
99
views
Incorrect distances when measuring on QGIS, leading to buffers and density maps being much larger
I have created a boat traffic map on QGIS 3.36.2. Here, I have a vector layer containing different points connected to show the boat routes in the Andaman and Nicobar Islands in India. To ensure that ...
0
votes
1
answer
53
views
Seeing how far you can travel by road using QGIS [duplicate]
I have 2 layers, one with roads of an area, and other with shops of the area. What I want to do is to produce a map which could show the roads that are 100m within the shops. Note that what I want is ...
- 11
0
votes
0
answers
25
views
Get rid of points that are over 500m from previous time point
I have gps data from animals over time. The collars recorded the location of the animal every 15 minutes, but there are some funky points that are obviously an error as the animal could not have moved ...
- 41
0
votes
2
answers
43
views
Creating buffer region using ArcMap
I'm trying to exclude a distance of 2km from several built-up area/settlements as an exclusion area.
A little background, I extracted the built-up area from a land use cover map and converted it to ...
- 5
1
vote
0
answers
178
views
Calculate distance to all polygons within a buffer/radius in R
I have 2 data sets, one with polygons and one with points. My goal is to find the distance between each point and all polygons that are within a radius of 16 km using R. The data set is very large (2 ...
- 65
0
votes
1
answer
918
views
Is the buffer distance the radius or diameter
I have created circles using the buffer tool ArcGIS Pro using point features. Is the distance specified when making a buffer the radius around the point, or is it the diameter? I have entered 1 meter ...
1
vote
1
answer
26
views
How to join name and distance attribute to a point within a distance of the same layer
I have a points layer (350 ish points), and basically want to know how many of these are in a 50 mile radius of each other. e.g. if point A has points B,D and P within 50 miles, I want the name and ...
- 13
0
votes
2
answers
840
views
QGIS distance in meter instead of decimal degrees
I use a shapefile of the US counties and I want to create buffer zones around the centroid of each county. However, the distance is measured in decimal degrees. As far as I understood, I have to ...
- 19
6
votes
3
answers
1k
views
Calculating distance between multiple points within buffer using QGIS
I am very new to QGIS.
Attached is an image of my QGIS project so far. In this, you have the pinkish points of the "Point_centers" layer and green points labeled "Point_trees" ...
3
votes
1
answer
206
views
Appropriate distance and CRS
I want to use buffer function using miles or kilometers in Louisiana. I checked Changing unit of measure from degrees to meters in QGIS?. The original CRS is EPSG:4326 - WGS 84 - Geographic and the ...
- 187
2
votes
1
answer
400
views
No data in the attribute table when creating buffer in QGIS [closed]
I wanted to create a buffer around a polygon using QGIS. This buffer zone is something I will use to estimate the distances between patches of habitat but every time I do so there's no data in the ...
- 111
9
votes
5
answers
776
views
Using buffer distance as portion of polygon variable width in QGIS
Is it possible to create a buffer of for example 3/4 of the polygons local width?
I have a polygon of river body, somewhere the river has 20 meters in width, somewhere 70 m. I need to extract the ...
- 183
2
votes
3
answers
106
views
Figure out location of city direction sign in image - friday fun project
So I came across this image and wondered where it could be located given the directions and distances. But I started to realise that the sign is all wrong. I'm guessing the Greek alphabet one is ...
- 313
0
votes
0
answers
62
views
Polygon buffer by distance
I am working with a world map shape file in the Spherical Equidistant Projection (Equirectangular) in QGIS 3.4. When creating a buffer using the VectorGeometry>Buffer function set for distance in ...
- 11
1
vote
0
answers
298
views
MapWinGIS Create Buffer Using Data That Has WGS84 Coordinate System
I am using MapWinGIS with c#. I am trying to create a buffer for a polygon that has WGS84 decimal degree reference system, but it never get displayed.
Here is my code:
// Form load
var gp = new ...
- 210