Hello @mchitre. I found a work around.
I just modify the code to return the ifigure (viz) and then I can safe the plot. It is great 
Could you help me a bit with iheatmap? I am trying to plot very noisy matrix. If I change the pooling to maximum I can see the positive picks but I need to saturate the color scale on the negative values. When I use the default mean, i can´t see my data.
Is there a way to change this so I can make my color scales symmetric?