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Logarithmic grey-scale

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alsyro February 4, 2010 - 16:30
Posts: 2
 Joined: 2010-02-04
 Location: United Kingdom

Hi,

I'm new to IGOR, so these questions might be somewhat ..basic. I'm (to my major frustration) stuck with IGOR to analyze surface state dispersions, due to a large amount of fitting makros written for IGOR.

My data consists of binary waves (3D), which are sliced to create 2D binary waves. I'm really having trouble all the way, right now I'm struggling to:
-display the images in a logarithmic grey scale without having to create new waves (as my computer can hardly handle the large data amount as it is)
-Scale all my axis equally (I have many graphs); not in terms of units but the absolute length of the axis, so that I can export images of precisely equal size or at least the same left/bottom axis length ratio

Is there any way the 2D binary waves can be exported to origin?

Thanks, in advance, for for any help. It is dearly needed and will be greatly appreciated.

Regards
JimProuty
 February 4, 2010 - 17:54
JimProuty's picture
Posts: 89
 Joined: 2007-07-19
 Location: United States

Quote:
display the images in a logarithmic grey scale without having to create new waves (as my computer can hardly handle the large data amount as it is)

I think you're asking if you can have a logarithmically-spaced color table?

Add this line to your procedure window:

#include <WMImageLogColorTable>

Then choose "Log Image ColorScale" from the "Graph" menu.

Quote:

-Scale all my axis equally (I have many graphs); not in terms of units but the absolute length of the axis, so that I can export images of precisely equal size or at least the same left/bottom axis length ratio.

Check out the "Modify Graph" settings in the "Graph" menu.

I think you want either the Plan mode or the Per Unit mode.

For more about this, enter the following command in Igor's command line:

DisplayHelpTopic "Graph Dimensions"

--Jim Prouty
Software Engineer, WaveMetrics, Inc.
alsyro February 4, 2010 - 18:34
Posts: 2
 Joined: 2010-02-04
 Location: United Kingdom

Thank you so much. That is precisely what I neded.

Again thanks,
Best regards
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