Are compressor maps for multistage compressors drawn for one blade row or the whole compressor?
The image you are referencing is definitely an entire compressor.  You can tell because the pressure ratio axis goes up to 17:1.  You won't get 17:1 out of a single blade row, ever. One-tenth of that would be more likely for a single stage.  i.e. this could be a 10 stage compressor with each stage contributing a 1.3 - 1.4:1 pressure ratio.  

I've only ever seen compressor maps like this drawn for entire compressors.  Not to say you couldn't do a single stage, but I've not seen it done.