gdalbuildvrt:tldr:226c6

The gdalbuildvrt -separate command is used to build a Virtual Raster (VRT) file from separate Red, Green, and Blue (RGB) image bands. VRT is a GDAL supported format that acts as a virtual mosaic of multiple raster files.

Here is a breakdown of the command with the provided paths:

• gdalbuildvrt is the command itself, which is used to create a VRT file.
• -separate is an option used to specify that the source files are separate bands of an RGB image, and they should be combined into a single VRT file as separate bands.
• ${path-to-rgb-vrt} is the path where the output VRT file will be saved. Replace ${path-to-rgb-vrt} with the desired path and filename of the VRT file.
• ${path-to-red-tif} is the path to the Red band of the RGB image in TIF format. Replace ${path-to-red-tif} with the actual path and filename of the Red band TIF file.
• ${path-to-green-tif} is the path to the Green band of the RGB image in TIF format. Replace ${path-to-green-tif} with the actual path and filename of the Green band TIF file.
• ${path-to-blue-tif} is the path to the Blue band of the RGB image in TIF format. Replace ${path-to-blue-tif} with the actual path and filename of the Blue band TIF file.

In summary, the command takes three separate band files (Red, Green, and Blue) and creates a single VRT file using these bands as separate layers. This VRT file can then be used for further processing or visualization as an RGB image.