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Results tagged with esri-ascii-raster
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user 16141
Use for questions about Esri ASCII Raster format (i.e., files with extension .asc)
4
votes
Interpreting .ASC/LiDAR Data?
It is important to disambiguate some concepts first. LiDAR data is point cloud data. It can be of types binary or non-binary, but it is not LiDAR data you are working with.
Instead, you have a rast …
- 10.3k
2
votes
Creating DEM from geoTIFF or asciiGRID LiDAR data?
Regarding printing the raster in 3D one option is the software R.
Here is a code using your sample file:
library(rgdal) #this package is necessary to import the .asc file in R.
library(rasterVis) # …
- 10.3k
1
vote
Accepted
Generate ESRI grid with xllcenter/yllcenter in header
An .asc file is also known as ESRI ASCII Raster format. The file header takes both xllcenter or xllcorner (and yllcenter or yllcorner) arguments, which represent the X coordinate of the origin by cent …
- 10.3k
1
vote
Analysing slope gradient from LiDAR .asc data?
Assuming your LiDAR .asc file is a bare-earth model, use the plugin Raster based terrain analysis.
Set the analysis as "Slope". From QGIS 1.8 documentation:
Slope: Calculates slope angle for eac …
- 10.3k