I would also like to add a few graphing suggestions.

1) From the "replace wave" dialog: I would like to be able to change multiple traces at the same time.
As it is you can only change X and/or Y for 1 trace, and if you select another trace before "Do it" these changes are lost. I often have multiple traces on one graph and need to change the X axis on all or change the plot range on all. As is, multiple lines of command line typing is faster than the dialog, but still not efficient.

2) On a similar note, I would like to change the axis association of an existing trace. For example: in an XY plot, I would like to associate the Y value of a given trace with the Right axis instead of the Left. (without loosing all my trace preferences -colors,symbols,error bars)

Thank you.
J.K.
NASA GRC
Cleveland, OH

I would love to see transparency as a more general concept in Igor. It would be especially nice if any color designation in Igor would accept not just (R,G,B) values, but also (R,G,B,A) values. An obvious example where this would be useful (in addition to your suggestion) is when plotting two or more histograms, where right now the histogram that is topmost effectively shadows the lower plots. As far as I know there is no elegant solution to this problem in the current Igor.

This should also be pretty interesting when displaying images, where (R,G,B,A) could be recognized as a standard display format, similar to how image plots will recognize (R,G,B) today. This would make for some interesting blending effects.

That wouldn't do exactly what I was after, but it did make me realize that there is a way to do "Cityscape fill to zero". In essence, you have two copies of a graph. The first uses bars mode and makes the outline on the bar the same color as the solid fill. The second uses Cityscape. Do it in that order for the traces to look right. Here's a quick demo to show what it looks like.

Make /o/n=1000 w=gnoise(1)
Make/N=30/O w_Hist;DelayUpdate
Histogram/B=1 w,w_Hist
Display /W=(570,70,965,278) w_Hist,w_Hist
ModifyGraph mode(w_Hist)=5,mode(w_Hist#1)=6
ModifyGraph lSize(w_Hist#1)=2
ModifyGraph rgb(w_Hist)=(65535,49151,49151)
ModifyGraph hbFill(w_Hist)=2
ModifyGraph usePlusRGB(w_Hist)=1
ModifyGraph plusRGB(w_Hist)=(65535,49151,49151)

I will stand by the statement, though, that it would be a convenience to be able to do this with a single trace as an option to Cityscape.

Full support for transparency effects through RGBA is a great idea. It will make IP7 worth the upgrade on its own....

John Bechhoefer
Department of Physics
Simon Fraser University
Burnaby, BC, Canada

By default appending a complex wave to a graph displays both the real and imaginary parts. Perhaps you mean something different?

--Jim Prouty
Software Engineer, WaveMetrics, Inc.

I suggest something like aclight says but maybe in a more flexible way.

I look at a complex wave as one object from which I can display several 'properties' and I guess you at Wavemetrics have the philosophy of handling the real and the imaginary part as independent waves.

I try again to explain what I mean: Assume you have a complex wave with some x scaling and you want to plot it. It is - not only for me - unintuitive to create a graph which plots let's say three copies of the same wave 'just to display real and imaginary part and the magnitude'. What is intuitive for me and others of my group is to plot one wave and then select in the graph properties window which parts I want to display - and also which color to use for which 'property'. It is more or less the other way around.

I guess this also goes together with allowing different scaling factors, offsets and error bars for real and imaginary parts.

Up to now I just was to lazy to write a plotting function which would do all the jobs for me, so I had to type

Display wave,wave,wave; AppendToGraph/R wave
ModifyGraph cmplxMode(wave)=3,cmplxMode(wave#1)=1;DelayUpdate
ModifyGraph cmplxMode(wave#2)=2,cmplxMode(wave#3)=4
ModifyGraph rgb(wave)=(0,0,0),rgb(wave#2)=(0,0,65535);DelayUpdate
ModifyGraph rgb(wave#3)=(3,52428,1)

What I suggest is something like:

Display wave;
ModifyGraph cmplxMode(wave)=15; // binary 1111 for displaying magnitude,real and imaginary part and phase
//Here I don't know how to solve the color part and so on

Anyway it's just a suggestion, and as I said one could write a small function which does the job. Only cahning things in the properties window is still little bit strange ;)

Cheers,

B.S.