[Gmsh] PATH command
Christophe Geuzaine
c.geuzaine at ulg.ac.be
Tue Jun 7 18:32:51 CEST 2005
abhishek basak wrote:
>
> Hi Christophe,
>
> I tried your suggestion. It gave a graph al right, but not what I had
> expected. I gave the following dummy ".pos" file
>
> View "a scalar map" {
> ST(0.0,0.0,0.0,10.0,0.0,0.0,0.0,10.0,0.0){10.0,10.0,10.0};
> };
>
> this is stored in the file test.pos attached below.
> Here a scalar triangle is defined with coordinates
> (0.0,0.0,0.0),(10.0,0.0,0.0) and (0.0,10.0,0.0). A plot of it is shown
> in Screen-1.jpg. Then I "cut grid" with the following i/p (Screen-2.jpg)
>
> x0=0.0
> y0=0.0
> z0=0.0
>
> x1=10.0
> y1=0.0
> z1=0.0
>
> x2=0.0
> y2=10.0
> z2=0.0
>
> ConnectPoints=0
>
> and then i set "2D space plot". The output is in file Screen-3.jpg. I
> expected a straight horizontal line, certainly not what I ultimately
> obtained.
>
> Did I do something wrong anywhere?
You are using a rectangular grid of 20x20 points, with half the points
outside the triangle... To get a grid along a single line, you should
set either nPointsU or nPointsV to 1.
Christophe
>
> Please advise,
>
> Thanking you,
>
> Abhishek Basak
>
> On Mon, 06 Jun 2005 Christophe Geuzaine wrote :
> >abhishek basak wrote:
> >>Hi, I was just checking out the gmesh program. I have been using
> >>ANSYS for quite some time now, and i have to say that GMESH
> >>incoperates most of the features of ANSYS. However, I could not find
> >>the equivalent of PATH command.
> >>
> >>For those who are not familiar with ANSYS, PATH plots the results of
> >>FEM analysis (temp,disp, etc), along a specified path between two
> >>points. The path need not be coincident with any of the nodes.
> >>
> >>Maybe the PATH or some equivalent command is already there in GMESH,
> >> but it seems to ellude me. Please help me out.
> >>
> >
> >You should be able to do these kinds of things with the "Cut Grid"
> >and/or the "Cut Parametric" plugins (available in the "Plugin" menu when
> >right-clicking on a view button).
> >
> >If you set "ConnectPoints" to zero in these plugins, you can then plot
> >the data in 2D graphs by selecting "2D space plot" in
> >Tools->Options->View->General. You can also export the data in order to
> >visualize it with other tools by using "View->Save As".
> >
> >Christophe
> >
> >-- Christophe Geuzaine
> >Applied and Computational Mathematics, Caltech
> >geuzaine at acm.caltech.edu - http://geuz.org
>
>
>
> <http://clients.rediff.com/signature/track_sig.asp>
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>
>
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>
>
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> ------------------------------------------------------------------------
>
> View "a scalar map" {
> ST(0.0,0.0,0.0,10.0,0.0,0.0,0.0,10.0,0.0){10.0,10.0,10.0};
> };
>
>
> ------------------------------------------------------------------------
>
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--
Christophe Geuzaine
Applied and Computational Mathematics, Caltech
geuzaine at acm.caltech.edu - http://geuz.org