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sebbey
Germany
70 Posts |
 Posted - 08/03/2012 : 01:48:16 AM
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Origin Ver.: 8.6.0
Operating System: Windows 7 Professional
Hi Guys,
I already posted this question some days ago and I wasn't sure if it was seen by anybody since I didn't start a new topic in the forum.
So here I go again:)
To smooth my Contour plots Kathy suggested to me in an earlier answer, that I should convert my XYZ Data to Matrix Data, in order to be able to smooth my plots and extrapolate the Data.
However, the w2m X-Function should only be used if the X/Y Values in the source worksheet are uniformly spaced, which is unfortunately not the case. So I tried to use the plotvm X-function, but I wasn't even able to create any graph with my data.
In the first picture below, you can see how my dataset looks like.
In the second picture you can see the contour plot, I created with this data, using the following code:
//define axes;
wks.col1.type=4;// Make Col1 type X.
wks.col2.type=1;// Make Col2 type Y.
wks.col3.type=6;// Make Col3 type Z.
//draw contour Plot
work -s 1 1 3 100; //mark columns
menu -e 35581; //draw contour plot
What I'm trying to is:
1) Smooth the contour lines, they look too edgy
2) Extrapolate the data. Although the maximum Value for eta(contour lines) is about 0.7, I would like to show Contour lines that go up to about 0.8.
3) I need to implement this graph/data manipulation with a LabTalk script.
Additional Question:
I found out, that its possible to extract the contour lines out of the contour plot. Is it possible to use this extracted data to somehow extrapolate the contour lines.
I hope I explained my problem well enough!
Thank you in Advance,
Sebbey |
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greg
USA
1378 Posts |
Posted - 08/03/2012 : 11:13:32 AM
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Just a comment:
All of the interpolation which takes place during generation of contour lines is within the XY plane at each Z level value. From your graph, it appears that you do not have any Z values greater than about 7.16 so even if you extend your Z levels higher Origin would never find any data with which to generate a contour. |
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sebbey
Germany
70 Posts |
Posted - 08/06/2012 : 01:58:06 AM
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Hi greg,
thanks for your answer. I guess I made a logical mistake there.
But there's still the Problem with smoothing the contour curves by script. Do you have any suggestions for that?
Thank you,
sebbey |
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sebbey
Germany
70 Posts |
Posted - 08/07/2012 : 10:20:12 AM
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Hi,
in case someone is interested in my solution to smooth the contour lines.
First I created a random contour plot which I smoothed manually with the settings I wanted. Afterwards I saved this contour plot as theme, which I later applied to the graphs I created with my LabTalk script. (X-Function: themeApply2g)
It works, although I think there should really be an easier way to smooth the lines of a contour plot.
Anyway, I hope I could help you in case you have a similar problem.
Greetz,
Sebbey |
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FelixGale
3 Posts |
Posted - 08/13/2012 : 02:09:13 AM
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Is it possible to use this extracted data to somehow extrapolate the contour lines.
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Smoothing