I have a raster layer (processed from landsat thermal band). But this data does not contain attribute table. I want to convert this into a vector layer of polygon features; holding an attribute table of temperature data. So I need to convert this to contain an attribute table. I am using ArcGIS software.
ArcGIS has a Raster to Polygon tool that will do this for you. It's in the conversion toolbox.
I suspect there's a better way to approach your problem, but it's hard to say without knowing more about your analysis.
The data was in float, so I found after some research it needs to be converted into integer first. Using Raster Calculator I used the following syntax to convert into new raster layer. It created an attribute table and I can convert it into vector data now. Syntax: