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Cut Point 3D Point Evaluation
Posted 01.03.2012, 11:18 GMT-5 Geometry, Results & Visualization Version 4.2a 5 Replies
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I am trying to obtain data for a point on my model that is not directly defined within the geometry. I have used the "Cut Point 3D" to add a point on my model, then I was going to use the "Point Evaluation" option to find the data at this point.
However, after defining the 3D point, and plotting it on my geometry, I am unable to select it in the point evaluation option. How do I ensure that the point has been created?
Thanks for your help!
Ross
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no point is "created" but a Data set structure with all variables interpolated to the geometrical point you defined. So you then access the data set as a Point Graph pointing to the given data set to "see" the values, or you apply an operator to it or wahtever
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Good luck
Ivar
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I have created 2 cut point 3D data sets. Essentially I am interested in looking at the voltage values at the 2 points. These points are not part of the geometry. In my derived values section, I create point evaluations for the 2 points. I can evaluate the point evaluations and look at the voltage values at the points individually. Now I am interested in looking at the potential difference between the 2 points. How do I do that? Obviously, I do not want to do the subtraction manually.
Thanks
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the best is to make them part of the geometry, and then define variables on them in the Model Definitions Variable node(s)
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Good luck
Ivar
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You can also use a Join data set where you use the first Cut Point 3D data set as Data 1 and the second Cut Point 3D data set as Data 2, and then use Difference as the combination method. Evaluating the Join data set as a Point Evaluation then gives you the potential difference between the voltages in the two points.
Best regards,
Magnus Ringh, COMSOL
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that's a possibility I often forget about, good point ;)
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Good luck
Ivar