[Gmsh] R: Re: Re: merge surface

[isettagi at libero.it]

I send the .geo file to better understand my problem. 
As you can see, I have in the center a topography, with a lot of 10x10 m 
surface. How can I merge it?
Thank you very very muche, for your attention

Isabella



>----Messaggio originale----
>Da: gdmcbain at freeshell.org
>Data: 27/10/2011 11.19
>A: "isettagi at libero.it"<isettagi at libero.it>
>Ogg: Re: Re: [Gmsh] merge surface
>
>2011/10/27 isettagi at libero.it <isettagi at libero.it>:
>> Thank you very much, now I will try.. I found also the command "Compound" 
but I
>> don't know if it is used as "Merge"
>
>Hello.  No, I think Merge is different, it's more like opening the
>file; I believe it's only used to bring in externally defined geometry
>(STL, BRep, IGES, STEP).
>
>I did actually used to have a Compound Surface step in that script
>until I posted it today, but as I was calling it on each of the three
>surfaces separately, as in
>
>Compound Surface (100) = {1};
>Compound Surface (200)=  {2};
>Compound Surface (300) = {3};
>
>I realized it wasn't really doing too much.
>
>You too may not need to compound your surfaces, though I don't know
>your application.  Gmsh is happy enough for many purposes with
>distinct surfaces; e.g. you can create an elementary volume from them,
>and you can put them into a single Physical Surface (for tagging of
>the surface elements in the mesh, for identification by the solver for
>imposition of boundary conditions, etc.).
>

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