How to make a surface plot

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Wed, 07/22/2009 - 06:07 am

Hello,

Sorry for the basic questions, but I am a beginner of IGOR Pro (Ver.6).

I want to make a surface plot of mathematical function, like z=f(x,y),
and each variables have domain of definition, respectively.
(ex. 0 < x < pi, 0 < y < 10...)

I cannot obtain the plot what I want to do.
Could you please help me ?

Firstly, I'm in big trouble I don't know how to make a matrix.
Now I'm trying to make a Wave which is corresponding to "z", by the command below

"Make/O/N=(20,20) w2D; w2D = ... "

Please tell me if I'm wrong.
And I'm using the tool named "Gizmo", and this is quite-complex for me.

So, I want to know the basic way of making the plot mentioned above, or about the basic operation procedure of "Gizmo".

Regards,
tsubame wrote:

I want to make a surface plot of mathematical function, like z=f(x,y),
and each variables have domain of definition, respectively.
(ex. 0 < x < pi, 0 < y < 10...)

I cannot obtain the plot what I want to do.
Could you please help me ?

Firstly, I'm in big trouble I don't know how to make a matrix.
Now I'm trying to make a Wave which is corresponding to "z", by the command below

"Make/O/N=(20,20) w2D; w2D = ... "

That's a good start. I recommend looking at the Getting Started manual. View it by executing this command on Igor's command line:

DisplayHelpTopic "Getting Started"

Be sure to keep going- the Guided Tour that's part of Getting Started will help you understand how Igor "thinks".

This won't cover two-dimensional issues, however. You may want to review Wave Assignments:

DisplayHelpTopic "Waveform Arithmetic and Assignment"

and issues having to do with multidimensional waves:

DisplayHelpTopic "Multidimensional Waves"

To establish the X and Y ranges of your function, use Igor's wave scaling. You can use the Change Wave Scaling dialog (in the Data menu) or use the SetScale command on the command line:

SetScale/I x 0,pi,w2D
SetScale/I y 0,10,w2D

Then use a two-dimensional wave assignment to fill in the Z values:

w2D = ...expression involving X and Y...

For more information about Gizmo, read the Visualization help file:

DisplayHelpTopic "Visualization"

John Weeks
WaveMetrics, Inc.
support@wavemetrics.com

July 22, 2009 at 09:01 am - Permalink

Thank you for giving me some useful advices, and the video tutorials were very informative.
Roughly I could obtain the plot what I want to make.

Thanks,

July 23, 2009 at 05:12 am - Permalink