Follow the Upload dataset steps. Select the upload Heatmap dataset option. Let's see some examples: Select the "Sample tree 2" from upload tree window to load the following tree.Here is tree in newick format:
(A:0.1,(B:0.2,(C:0.3,D:0.4)100:0.05)100:0.1)90:0.43;
An example dataset:
#heatmap
!title Example of heatmap
!showLegends 1
!defaultStrokeColor gold
!defaultStrokeWidth 2
!colorgradient green, yellow,red
!colorgradientMarkLabel 0,5,10,15,20,25
# -- heatmap column labels --
!showHeatMapColumnLabel 1
!heatmapColumnLabels e1,e2,e3,control
# -- heatmap --
!heatmap margin=2,colwidth=30,roundedcorner=2
# -- show data value
!showdataValue show=1,fontsize=12
A -2,3,5,0
B 7,9,10,23
C 13,15,19,8
D 20,22,25,4