This is a followup question to: Determining percent land coverage around points of interest using NLCD and QGIS
I am looking to determine the percent of various landcover types (wetlands, forest, etc.) in areas of various radii surrounding a breeding location using the NLCD database. Using help I received with my previous question, I was able to generate shapefiles representing all of my desired radii. The response to my question also linked me to a video showing how to determine the various percentages of landcover in my buffer zones. However, the video showed the use of a Shapefile for the land coverage instead of the raster file. When I downloaded the NLCD database, I got files with the following extensions:
.xml and a folder called spatial metadata with files named spatial_metadata with extensions of
.txt. When I open the
.shp metadata file, it just shows the US as a solid color. When I open the
.img file, I see the landcover usage that I would like.
How can I go about getting a file (or files if I need to have one for each land cover category) that I can use with the buffer zones to calculate percentage?
I have done the raster to vector (polygonize) command, but when it finishes running, it says there is an additional layer called "vectorized" however that layer is completely empty when I try to view it.