manipulate Heatmap

Hi,here is my problem:
I have 48 samples, and I have got an SVG file by using the heatmap.bin command. But when I open this file with Adobe Illustrator, I can only see a triangle consists of different red grids. There wasn’t any mark in words I can find. So how can I know the meaning of every row and column? Thanks.

The labels are there, but with that many samples the picture must be zoomed out to see the whole grid. You may want to consider using the groups option with the heatmap.bin command to select a subset of groups. You could run heatmap.bin() several times using the groups parameter to select some of the groups, and with sorted=false. The files produced will be like breaking the large file into pieces, but the color intensity may be inaccurate.