Category plot with two axes
Tue, 02/19/2013 - 07:48 am
I know if you add a trace to the existing y-axis, then Igor will appropriately put a bar for each trace within each category, and then you can change the category/bar gaps to adjust the graph appearance. But if the two traces require two separate y-axes and you add a new trace to the graph with a new y-axis, then it seems that Igor will only plot the traces overlaid. Is this true? The category/bar gap adjustment is not helpful here because both bars are always centered in the category. I can't seem to find a way to separate out the bars, or tell Igor to plot the left axis data points in the first 50% of each category and the right axis data points in the second 50%. I tried to play around with the x-scaling of each wave, but that only seemed to produce unpredictable results.
I will probably just end up plotting the data differently, with the categories being the parameters quantified ('Amplitude' and 'Area') and the data sets/series plotted instead would be '10ms', '20ms', and '30ms'. However, I'm really surprised that I can't find a way to plot the data as I described above, and maybe I'm just missing something simple! If anyone has any thoughts it would be very much appreciated.