Hello, I'm using icontour to plot some transmittance data through different pieces of glass.  I'm using filled contours, and I've been able to get the data to plot correctly.  I've got one plot for each glass type, and all of the plots are the same size.  In order to make comparison easier, I'd like to make the 'z range' or colour scale the same for all plots.  I've spent a lot of time trying to make this work without any luck, so I'm posting here in the hope that someone might be able to help me out.  I've tried specifying each contour level, and setting the min_ value and max_value, but it seems like icontour just takes over and sets the z range automatically based on the data. So, to summarize, what I have now for a z range is (using the rainbow colour table): plot 1: 0.64 as black, up to 0.76 as red plot 2: 0.72 as black, up to 0.84 as red and what I'd like to have: plot 1: 0.64 as black, up to 0.84 as red plot 2: 0.64 as black, up to 0.84 as red (i.e. with the colour scale giving the same values on both plots.) Any help would be appreciated. Thanks, Steve