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Extracting data from a 2D contour plot in Matlab
Posted 21 feb 2011, 02:30 GMT-5 Interfacing Version 4.0a 1 Reply
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Hello,
I have a 2D contour plot (Cut plane>2D plot group) in Matlab that I obtained through livelink, and I want to do some analysis on its data. The 2D cut plane goes through total acoustic pressure in my 3D model.
From what I understand, in order to get that pressure data I need to run in matlab:
[Ac_P] = mphinterp(model,{'acpr.p_t'},'dataset','cpl1');
What I am getting as a result of that is a 6x14685 matrix which when plotted as a contour looks like a real mess, and nowhere close to the plot I exported to Matlab...
Anything I am doing wrong here?
Thanks in advance!
I have a 2D contour plot (Cut plane>2D plot group) in Matlab that I obtained through livelink, and I want to do some analysis on its data. The 2D cut plane goes through total acoustic pressure in my 3D model.
From what I understand, in order to get that pressure data I need to run in matlab:
[Ac_P] = mphinterp(model,{'acpr.p_t'},'dataset','cpl1');
What I am getting as a result of that is a 6x14685 matrix which when plotted as a contour looks like a real mess, and nowhere close to the plot I exported to Matlab...
Anything I am doing wrong here?
Thanks in advance!
Attachments:
1 Reply Last Post 21 feb 2011, 20:49 GMT-5
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Posted:
1 decade ago
Well, I went through the test problem presented in the Livelink users guide. I loaded "heat_convection_2d.mph" from model library. I set up cut line (0.2, 0) - (0.2,1) [Plot Group2 in my case] and exported data along it to Matlab:
model = ModelUtil.model('heat2D');
figure(1)
mphplot(model,'pg2','rangenum',1)
[y,T] = mphinterp(model,{'y','T'},'dataset','cln1');
iy=~isnan(y);
iT=~isnan(T);
y=y(iy); T=T(iT);
figure(2)
plot(y,T);
But Data plotted with Matlab does not match what I've plotted with Comsol (see attached closeup graphs).
Any idea why?
Thanks in advance
model = ModelUtil.model('heat2D');
figure(1)
mphplot(model,'pg2','rangenum',1)
[y,T] = mphinterp(model,{'y','T'},'dataset','cln1');
iy=~isnan(y);
iT=~isnan(T);
y=y(iy); T=T(iT);
figure(2)
plot(y,T);
But Data plotted with Matlab does not match what I've plotted with Comsol (see attached closeup graphs).
Any idea why?
Thanks in advance
Attachments: