Lossless compression
This command compresses a LAS point cloud to MrSID Generation 4 using lossless compression:
mrsidgeoencoder -i foo.las -o foo.sid ‑of mg4 ‑lossless
Setting a compression ratio
This command compresses a LAS point cloud to MrSID Generation 4 using a 15:1 compression ratio:
mrsidgeoencoder -i foo.las ‑o foo.sid ‑of mg4 ‑cr 15
Compressing a text file
This command compresses a text file and maps the columns in the text file to fields in the output point cloud:
mrsidgeoencoder -i in.txt ‑o out.sid ‑tfc txyzi
The file above contains the following values: the GPS time, the X values, the Y values, and the intensity.
Cropping
This command crops a LAS point cloud to MrSID Generation 4 to a rectangle defined by the upper left and lower right corners:
mrsidgeoencoder -i foo.las -o foo_cropped.sid -cropulxy 580677 4504756 -croplrxy 580791 4504635
Reprojecting a point cloud
This command reprojects a LAS point cloud to MrSID Generation 4 from the original CRS (NAD83 / UTM zone 18N, 26918) to WGS 84 (4326).
mrsidgeoencoder -i foo.las -o foo_to4326.sid -fromepsg 26918 -toepsg 4326
Creating a flat mosaic
This command uses a mosaic list file to create a LiDAR point cloud mosaic:
mrsidgeoencoder -i mosaic.list ‑mos ‑o mosaic.sid
The file with a .list
extension is the mosaic list file.
Here is a sample mosaic list file for a given set of georeferenced LAS files:
cloud_nw.las
cloud_ne.las
cloud_sw.las
cloud_se.las