Any advice/tools on drawing the eyegaze heatmap?


Thanks for all the help from this nice forum, I finally got my eyetracking data (have been coverted to csv file). However, I had some trouble processing the data when I try to draw the gaze heatmap. I followed the tutorial in “Communicating with an Eyetracker”, which is nice, but I wonder if there is any tools to draw some more complex heatmaps.

Thanks for any suggestions,