All Questions
70
questions
2
votes
1
answer
61
views
"Buffering" raster category of raster layer in QGIS
In this raster with 300m resolution, I would like to increase the size of one category (1), creating an (approximately) 1km buffer increase. In other words: I would like to expand the borders of ...
- 47
-1
votes
1
answer
56
views
MULTI RING BUFFER VECTOR LAYER TO RASTER [closed]
I have a line vector file in qgis in which I run the multi-ring buffer command to divide the area into 200m zones from the river because I want to make a flood hazard map.
So I have a multi ring ...
0
votes
0
answers
74
views
QGIS raster buffer by cell value
Is it possible to buffer a raster in QGIS based on cell value? I want to be able to model the theoretical falling zones from tree height data (1x1 resolution LiDAR data) from tree canopy cover extent ...
0
votes
1
answer
358
views
How to calculate the weighted average of a raster for the pixels touching a layer corresponding to a buffer (ArcGIS Pro)
I have a first raster layer which represents pixels of about 30m by 30m.My second layer corresponds to a circular buffer with a radius of 500m (I calculated the buffer from a point layer)
I have a ...
1
vote
1
answer
114
views
Failing to calculate land use in buffer zones around points using ArcGIS (ArcMap)
I have a raster layer of land-use in my country, and a set of points I'm interested in calculating the land use around (in 1km, 5km, etc., buffer zones). I have read through some of the related posts ...
- 11
0
votes
0
answers
94
views
ArcGIS Pro error 999999 using spatial join on the SOLRIS 3.0 data/layer
I am pretty new to GIS but am trying to use the spatial join tool with the SOLRIS 3.0 data and my own data consisting of polygons. I am getting back the error code mentioned above and am so new at all ...
- 1
1
vote
3
answers
141
views
Forest patch centroids are not located in patches using landscapemetrics in R
I am using the R package landscapemetrics to find forest patch centroids in a landscape. The given function to find patch centroids is get_centroids(). The centroids returned from get_centroids() are ...
- 444
0
votes
0
answers
63
views
Multiplying binary rasters
I have 2 binary rasters: one of them contains buffer zones around evacuation roads and the other one contains buffer zones around rivers. I want to find out the areas located near the evacuation roads ...
3
votes
3
answers
821
views
Extract multiple raster samples by input vector layer
I am working in QGIS 3.24.0. I am working on a project using the NLCD raster for the contiguous USA. I need to extract 208 circular buffers (10km radius) and have them each saved as a separate raster ...
- 31
0
votes
1
answer
72
views
Find the distribution of nlcd categories within polygons
I am new to QGIS. I am trying to find out the distribution of NLCD bins within the buffered areas. The buffered areas is a vector layer, while the other is the NLCD raster (downloaded from MLRC). ...
- 1
0
votes
1
answer
283
views
How to create buffer of raster without original area in it in GEE
I am quite new in GEE but got really stuck!
I want to create buffers around concession areas (raster) of 1km.
I first transformed my vector dataset into raster, reclassified the values to 1 and ...
- 43
0
votes
1
answer
149
views
Buffering spatialpoints and getting raster values from overlapping polygons
I have a spatial points representing eDNA sample.
I have a raster file representing surface temperature (RST)
I want to extract the surface temperature according to the eDNA sample.
So, I decided to ...
- 41
1
vote
1
answer
677
views
Sampling raster data around point set in QGIS
I have the following problem: I have a set of 27 "destinations" which I have selected manually and saved as a POINT layer. I have loaded several raster data layers into my project (with ...
- 85
3
votes
2
answers
200
views
Using buffers in Point Sampling Tool
I have 50m (shape file) buffers around (shape file) data points. I have another layer with the raster of the vegetation (indicated by different colours) in that land. I can easily extract the raster ...
0
votes
2
answers
121
views
How to fill NA values orthogonally to a line raster?
I want to create a buffer for a line raster by filling the NA values orthogonally to each cell.
sample data
library(raster)
r <- raster(resolution=5)
values(r) <- 1:ncell(r)
cds <- rbind(c(-...
- 469