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 How to plot a function in the form f(x, y)=0?
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blocho

Norway
5 Posts

Posted - 05/02/2006 :  03:25:21 AM  Show Profile  Edit Topic  Reply with Quote  View user's IP address  Delete Topic
Origin Version (Select Help-->About Origin): 7.5
Operating System: Windows 2000

Is it possible to plot a function in the form f(x,y)=0? (It is not possible to obtain y=f(x))
How to solve the problem?

Thanks in advance!
Mariusz

Hideo Fujii

USA
1582 Posts

Posted - 05/02/2006 :  2:01:32 PM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Mariusz,

You may try the following tool in the File Exchange page:
http://www.originlab.com/fileexchange/details.aspx?fid=100

--Hideo
OriginLab

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blocho

Norway
5 Posts

Posted - 05/03/2006 :  09:49:46 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Hideo,

I tried the script but it is not suitable for very long equations I have. If there is another possibility to generate the implicit function in Origin, let me know.
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Hideo Fujii

USA
1582 Posts

Posted - 05/03/2006 :  11:02:15 AM  Show Profile  Edit Reply  Reply with Quote  View user's IP address  Delete Reply
Hi Mariusz,

One way is that you can modify the script file of that tool, FxyPlot.OGS in your installation. There is a section called [DataCreation] in the script, and it computes the value of Delta, which is the absolute value of f(xx,yy), as the formula is stored in %A. So, you can simply replace the line (i.e., Delta=abs(%A);) by your computation to get this.

Good luck.

--Hideo


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