Jonathan and Daniel -- Thanks. In a few days or so, I shall post what I come up with for others to use. Jamie
On Wed, Jun 15, 2016 at 3:58 PM, Guyer, Jonathan E. Dr. (Fed) < jonathan.gu...@nist.gov> wrote: > You can generate a simple mesh in order to probe what's stored by doing > something like: > > mesh1 = fp.Grid2D(nx=2, ny=2) > mesh2 = fp.Grid2D(nx=2, ny=2) + [[2], [1]] > mesh = mesh1 + mesh2 > > > > On Jun 15, 2016, at 2:06 PM, James Pringle <jprin...@unh.edu> wrote: > > > > Jonathan -- > > > > Thank you, this is exactly what I need. Two more questions. > > • Is the order of the vertices in faceVertexIDs important? > > • Is the order of faces in cellFaceIDs important? Must they wind > clockwise or counterclockwise? > > Thanks, > > Jamie > > > > On Wed, Jun 15, 2016 at 1:56 PM, Guyer, Jonathan E. Dr. (Fed) < > jonathan.gu...@nist.gov> wrote: > > The first three arguments to the Mesh2D constructor are (all that is) > required: > > > > class Mesh2D(Mesh): > > def __init__(self, vertexCoords, faceVertexIDs, cellFaceIDs, ...): > > > > All other arguments have default values assigned. > > > > For your case: > > > > vertexCoords is of shape (2, N) where N is the number of vertices > > faceVertexIDs is of shape (2, M) where M is the number of faces > > cellFaceIDs is of shape (3, P) where P is the number of cells > > > > faceVertexIDs and cellFaceIDs are 0-based, as they are indices into the > preceding array > > > > > On Jun 15, 2016, at 1:29 PM, James Pringle <jprin...@unh.edu> wrote: > > > > > > Well, I am motivated to give it a go, since I only have the summer to > make progress on project and it is blocking my research progress right now. > Can you give me a pointer to where the appropriate quantities are defined? > I can certainly write code to make the transformations, but it is a bit > hard without understanding precisely what is defined in the Mesh2D object. > I have made a simple Mesh2D object, but I am not sure which of the > attributes, etc, are absolutely required, or how they are precisely defined. > > > > > > Perhaps most useful for me would be > > > • a definition of which parts of the Mesh2D object must exist > > > • and the format of those parts, in particular the a face to > vertex array and a > > > cell to face array > > > Or you could point me to the appropriate part of the Gmsh code so I > can go from there. I presume poking around in fipy.Gmsh2D would be a good > place to start? Is there a better place to start? > > > > > > I would love any documentation on the details of the Mesh2D object. > > > > > > Thanks, > > > Jamie Pringle > > > University of New Hampshire > > > > > > On Wed, Jun 15, 2016 at 12:21 PM, Daniel Wheeler < > daniel.wheel...@gmail.com> wrote: > > > Hi Jamie, > > > > > > There is no automated way to make a FiPy mesh from Scipy's Delaunay > > > object. The problem is that FiPy needs a face to vertex array and a > > > cell to face array while the Delaunay object just has the cell to > > > vertex array. The functionality to extract the face to vertex array > > > and cell to face array is in FiPy because it must be done for Gmsh, > > > however, it is not abstracted in so that it can be reused. > > > > > > It is certainly possible to make the correct arrays with Numpy and > > > pass them to the Mesh2D object, but it's a bit of work to write the > > > code. If I find some time I might give it a go, but I don't know when > > > I will get to it. > > > > > > Cheers, > > > > > > Daniel > > > > > > On Tue, Jun 14, 2016 at 4:15 PM, James Pringle <jprin...@unh.edu> > wrote: > > > > Daniel et al. -- > > > > > > > > As referenced earlier in this thread, I have a complex domain > with holes > > > > in it; I now have it broken up into triangles, based on the Delaunay > package > > > > in SciPy. I have > > > > > > > > Locations of all vertex coordinates, > > > > list of vertices that make up faces > > > > list of faces that make cells > > > > list of faces that make up all the internal and external boundaries. > > > > > > > > Can you point me to any code or documentation that would help me > understand > > > > how to make this into a Mesh2D object? I am having a devil of a time > > > > figuring out from the manual online. The best would be something > that used > > > > the output of either the triangles or scipy.spatial.Delaunay() > packaged. My > > > > equation is of the form > > > > > > > > 0=J(Psi,A(x,y)) + \Del(B(x,y)*\Del Psi) > > > > > > > > > > > > and I can get the coefficients A(x,y) and B(x,y) on either the faces > or in > > > > the cell centers are needed. > > > > > > > > Thank you. > > > > Jamie Pringle > > > > University of New Hampshire > > > > > > -- > > > Daniel Wheeler > > > _______________________________________________ > > > fipy mailing list > > > fipy@nist.gov > > > > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ctcms.nist.gov_fipy&d=CwICAg&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=Q6M6XDjzGDlxMDgrY-riZ7Q70Abl5Aq7SRrTwZNYsws&s=yiO9QAq_3EUy9lVY5F76Tc9mnaB5Ubclilpum_QCUOE&e= > > > [ NIST internal ONLY: > https://urldefense.proofpoint.com/v2/url?u=https-3A__email.nist.gov_mailman_listinfo_fipy&d=CwICAg&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=Q6M6XDjzGDlxMDgrY-riZ7Q70Abl5Aq7SRrTwZNYsws&s=yIJJw-iQknimZfYCRrZmk7V2eHSJrCtcAehgVbGeiDk&e= > ] > > > > > > _______________________________________________ > > > fipy mailing list > > > fipy@nist.gov > > > > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ctcms.nist.gov_fipy&d=CwIGaQ&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=iGk4QC0NEBSkRipnXJcMmV0qOdCYUWc6oQMIUpAmqyI&s=1tQAVl8UCyd9BiwQBhF_rRh-tByp33vxeyiD9YAxw3E&e= > > > [ NIST internal ONLY: > https://urldefense.proofpoint.com/v2/url?u=https-3A__email.nist.gov_mailman_listinfo_fipy&d=CwIGaQ&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=iGk4QC0NEBSkRipnXJcMmV0qOdCYUWc6oQMIUpAmqyI&s=7yd1h-JO1QFeqXahL2kb-tCDlDKBlKe_3W98fKFBlj0&e= > ] > > > > > > _______________________________________________ > > fipy mailing list > > fipy@nist.gov > > > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ctcms.nist.gov_fipy&d=CwIGaQ&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=iGk4QC0NEBSkRipnXJcMmV0qOdCYUWc6oQMIUpAmqyI&s=1tQAVl8UCyd9BiwQBhF_rRh-tByp33vxeyiD9YAxw3E&e= > > [ NIST internal ONLY: > https://urldefense.proofpoint.com/v2/url?u=https-3A__email.nist.gov_mailman_listinfo_fipy&d=CwIGaQ&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=iGk4QC0NEBSkRipnXJcMmV0qOdCYUWc6oQMIUpAmqyI&s=7yd1h-JO1QFeqXahL2kb-tCDlDKBlKe_3W98fKFBlj0&e= > ] > > > > _______________________________________________ > > fipy mailing list > > fipy@nist.gov > > > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ctcms.nist.gov_fipy&d=CwIGaQ&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=P3_Srw2STaroPkv92yWeYXeVhhcK9d4AHZy6SWNLo_g&s=h7LRM1VCVAc6TGJKYGI5tYbnNXAmCIxEuaj7p6z7GwA&e= > > [ NIST internal ONLY: > https://urldefense.proofpoint.com/v2/url?u=https-3A__email.nist.gov_mailman_listinfo_fipy&d=CwIGaQ&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=P3_Srw2STaroPkv92yWeYXeVhhcK9d4AHZy6SWNLo_g&s=8EfuDhS8QEFgus-lMoACCLq_8-dPuqBey0GDZClo5Tc&e= > ] > > > _______________________________________________ > fipy mailing list > fipy@nist.gov > > https://urldefense.proofpoint.com/v2/url?u=http-3A__www.ctcms.nist.gov_fipy&d=CwIGaQ&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=P3_Srw2STaroPkv92yWeYXeVhhcK9d4AHZy6SWNLo_g&s=h7LRM1VCVAc6TGJKYGI5tYbnNXAmCIxEuaj7p6z7GwA&e= > [ NIST internal ONLY: > https://urldefense.proofpoint.com/v2/url?u=https-3A__email.nist.gov_mailman_listinfo_fipy&d=CwIGaQ&c=c6MrceVCY5m5A_KAUkrdoA&r=oMf1-WHpUHeD7kN3S7612CDdF2TDPqDF9R-n-71Ks1Y&m=P3_Srw2STaroPkv92yWeYXeVhhcK9d4AHZy6SWNLo_g&s=8EfuDhS8QEFgus-lMoACCLq_8-dPuqBey0GDZClo5Tc&e= > ] >
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