All Questions
Tagged with rasterization dem
9 questions
1
vote
1
answer
58
views
How can I rasterize a vector object, while keeping it's height value?
It's a simple building, with a height of 60 meters.
I tried using the vector-raster tool, but I ended up with a 40 GB object(?), that won't show up on the map. And then I used TIN interpolation (...
- 13
0
votes
1
answer
121
views
Convert smoothened contour in QGIS ( vector) to raster for use in HECRAS
I have generated contours in QGIS using point data (AutoCAD file) and I had to also smoothen the contours and remove noises (smaller contours) from the contour generated. I need to get this contour ...
- 147
1
vote
1
answer
186
views
Convert points with x,y coords and value from to a raster image
I have a CSV file with xcoord,ycoord and pixel value from DEM. After I import it in QGIS, I take this table.
I want to make a raster from this point layer. I tried rasterized (vector to raster), I ...
- 174
0
votes
1
answer
230
views
Clean DEM in QGIS
I'm attempting to create a DEM in QGIS from contours using the "Rasterize (vector to raster)" function.
How do I create a DEM that is clean and does not have blank spots?
- 21
3
votes
1
answer
273
views
Merge overlapping polygons to elevation data
I'm new to GIS and need to create a shortest path avoiding buildings. The buildings are represented as polygons in a shapefile.
In QGIS I created a buffer polygon for each building, corresponding the ...
- 33
0
votes
2
answers
848
views
DEM from Vector to Raster in GRASS GIS
I am using GRASS GIS 7.4 and I have a DEM as points in a vector format and want to turn it into a raster.
I tried using v.to.rast and v.to.rast3, but the elevation is not one of the attributes so am ...
- 604
3
votes
2
answers
3k
views
Usage of interpolation methods with DEMs: Linear vs. natural neighbors
Using the ArcGIS tool "TIN to Raster" (3D Analyst Tools --> Conversion --> From TIN) to work on my Digital Elevation Model I was wondering about the interpolation methods.
I can choose either or:
...
- 435
7
votes
3
answers
2k
views
Creating raster or vector raster from DEM point file?
i have a point shape of 75.000 elevation points in a regular 5 m grid.
We now want to create a polygon grid with the elevation points as "centroids".
Unfortunately, all attempts to do so fail:
I ...
- 3,239
15
votes
6
answers
26k
views
Burning stream network into DEM layer using ArcGIS Desktop?
I am working on a DEM that in an area where there is little relief.
I would like to 'burn' the river network into the DEM so I can calculate flow accumulation and flow length accurately.
I am ...
- 151