Return the heatmap figure acorrding from the gene expression values of specified samples and genes. Click Here to see an example figure. PCA wikipedia
The heatmap analysis will be accomplished by R using 'heatmap.2' function in library 'gplots'
The expression matrix file must contain row and column names and separated by Tabs, generally the row names are the unigene IDs and the column names are the sample names, displayed as follow.
GeneID sample1 sample2 sample3 sample4
Unigene00001 1300.99 1665.09 1352.56 1121.33
Unigene00002 3454.18 355.8 440.78 2260.36
Unigene00003 1873.72 551.4 1529.66 519.94 ...