[netcdfgroup] How to display triangular finite elements mesh stored in netcdf

• To: <netcdfgroup@xxxxxxxxxxxxxxxx>
• Subject: [netcdfgroup] How to display triangular finite elements mesh stored in netcdf
• From: "Matteo Previdi" <mPrevidi@xxxxxxxxxx>
• Date: Fri, 20 Feb 2009 07:37:51 -0700 (MST)

Dear Sirs,
I write you illustrating my problem and hoping you can help me in order =
to solve it.

The problem is the following (apparently, very simple):

<<< I need to display a map of a TRIANGULAR FINITE ELEMENT MESH stored =
in Netcdf file. Can be possible using your software to visualize it? >>>

I try to explain clearly what I have done to build up the TRIANGULAR =
FINITE ELEMENT MESH Netcdf file.

I have built a netcdf file (see below) with a unstructured grid =
(triangular mesh) following some example (FVCOM, QUODDY, etc.). The =
files' structure is more or less the same. Apparently, at the end of my =
work I have set up a normal Tin file (file of a triangular mesh) in =
Netcdf format.

At this point, I have tried to use NcBrowse and Panolopy softwares to =
visualize the mesh but it has been impossible. Let's take note that, at =
the contrary, the same programs worked normally with a regular grid =
representing the same variables.

Can you say me if your software is able to do visualize a TRIANGULAR =
FINITE ELEMENT MESH as mine? Or, can you give me the exact structure =
that I have to follow to create a TRIANGULAR FINITE ELEMENT MESH Netcdf =
file workable with your program (general standard).

If the answer to my question is positive I could be really interested to =
buy YOUR SOFTWARE.

At your disposal for any further question and clarification.

Thanks very much
Matteo Previdi

CREA Srl
Corso Milano 9 Verona
emai:matteo@xxxxxxxxxx

NetCDF file "MESH zirino3_7Dyn.nc"=20

-------------------------------------------------------------------------=
-------

netcdf file:/C:/ModMef/MefOut/zirino3/MESH zirino3_7Dyn.nc {
 dimensions:
   Asse_X =3D 14429;
   Asse_Y =3D 14429;
   Asse_Z =3D 14429;
   Node =3D 14429;
   Cells =3D 25319;
   nNbd =3D 3722;
   Nbi =3D 4;
   Connections =3D 3;
   Time =3D UNLIMITED;   // (2 currently)   // (has coord.var)
 variables:
   float Asse_X(Node=3D14429);
     :standard_name =3D "Asse_X";
     :units =3D "degrees_east";
     :mesh =3D "Mesh";
     :actual_range =3D 12.131293f, 12.580233f; // float
   float Asse_Y(Node=3D14429);
     :standard_name =3D "Asse_Y";
     :units =3D "degrees_north";
     :mesh =3D "Mesh";
     :actual_range =3D 45.110603f, 45.496544f; // float
   float Asse_Z(Node=3D14429);
     :standard_name =3D "Asse_Z";
     :units =3D "[m]";
     :mesh =3D "Mesh";
     :actual_range =3D -1.0f, 34.57f; // float
   int Mesh(Connections=3D3, Cells=3D25319);
     :X_nodal_coordinate =3D "Asse_X";
     :Y_nodal_coordinate =3D "Asse_Y";
     :Z_nodal_coordinate =3D "Asse_Z";
     :standard_name =3D "cell_connectivity_indices";
     :spatial_dimension =3D "3";
     :topological_dimension =3D "2";
     :cell_type =3D "NC_TRI";
     :units =3D "index_start_1";
   int nNbd(nNbd=3D3722, Nbi=3D4);
     :long_name =3D "Boundary_Segment_Node_List";
     :units =3D "index_start_1";
   float REL(Time=3D2, Node=3D14429);
     :units =3D "[m]";
     :X_nodal_coordinate =3D "Asse_X";
     :Y_nodal_coordinate =3D "Asse_Y";
     :grid =3D "Mesh";
     :grid_location =3D "Edges";
     :positive =3D "Down";
     :long_name =3D "Bathymetry";
     :actual_range =3D -34.57f, 1.117f; // float
   float H(Time=3D2, Node=3D14429);
     :units =3D "[m]";
     :X_nodal_coordinate =3D "Asse_X";
     :Y_nodal_coordinate =3D "Asse_Y";
     :grid =3D "Mesh";
     :grid_location =3D "Edges";
     :actual_range =3D -0.47f, 1.009f; // float
   float 0001(Time=3D2, Node=3D14429);
     :units =3D "[u.i./m2]";
     :X_nodal_coordinate =3D "Asse_X";
     :Y_nodal_coordinate =3D "Asse_Y";
     :grid =3D "Mesh";
     :grid_location =3D "Edges";
     :actual_range =3D -0.47f, 1141.3494f; // float
   float U(Time=3D2, Node=3D14429);
     :units =3D "[m/s]";
     :X_nodal_coordinate =3D "Asse_X";
     :Y_nodal_coordinate =3D "Asse_Y";
     :grid =3D "Mesh";
     :grid_location =3D "Edges";
     :long_name =3D "Northward Water Velocity";
     :actual_range =3D -1.314f, 341.87106f; // float
   float V(Time=3D2, Node=3D14429);
     :units =3D "[m/s]";
     :X_nodal_coordinate =3D "Asse_X";
     :Y_nodal_coordinate =3D "Asse_Y";
     :grid =3D "Mesh";
     :grid_location =3D "Edges";
     :long_name =3D "Eastward Water Velocity";
     :actual_range =3D -1.4745f, 1.8604f; // float
   double Time(Time=3D2);
     :standard_name =3D "Time";
     :units =3D "hours since 1-1-1 00:00:00.0";
     :actual_range =3D 1.756944E7f, 1.7569442E7f; // float
     :Data_Simulazione =3D "2005-04-23 00:00:00.00 +00:00";
     :delta_t =3D "0000-00-00 01:00:00.00 +00:00";
     :n_time_step =3D "         2";
     :_CoordinateAxisType =3D "Time";

 :Conventions =3D "COARDS";
 :Lib_ver =3D 10101; // int
 :Description =3D "NetCdf";
 :Model =3D "Sml by CREA Srl";
 :History =3D "Converted from c:\ModMef\MefOut\zirino3\zirino3_7.smh to =
";
 :Creation_Time =3D "11  2 2009  H 16.19.19.019 (system local time)";
}

• Follow-Ups:
  • [netcdfgroup] Re: How to display triangular finite elements mesh
    • From: Matteo Previdi
  • Re: [netcdfgroup] How to display triangular finite elements mesh stored in netcdf
    • From: Mary Haley