[opendx-users] data file format, fortran subroutines, connecting separate grids, etc.

[John Hernlund]

Hello,
   I have a problem that I would like to try and use openDX to solve. I 
am new to DX, so I am not yet completely familiar with its particulars. 
Let's say I have openDX and all the netCDF, imagemagick, etc. installed 
and ready to go. I've data on a three-dimensional set of grids that 
over lap one another along curvilinear and conforming edges. This is a 
set of cubic projected grids (six regular gridded regions on the 
sphere) in a spherical shell covering the sphere. These data are 
produced by simulations on these grids and values of a scalar field and 
vector field are given in any coordinate system registered at the 
nodes. What I need is a way of plotting 2-D slices and 3-D iso-surfaces 
of a three-dimensional scalar field, as well as vector fields smoothly 
across all these boundaries between the separate gridded regions with 
conforming edges. I can supply the data in any needed coordinate, eg. 
x,y,z,value in the case of a scalar field.

   It seems to me that the best way to go would simply be to write the 
data into a file format directly from the (fortran) programs that can 
easily be opened and analyzed using open DX. Both of these programs can 
use MPI to run on a cluster, so this is another issue as well (for 
later, just focus on single proc for now). The most difficult part of 
getting any graphics representation of data is simply getting the data 
into the visualization program and then having it recognize the 
connectivity of various regions. If the data is written out into the 
correct or friendly file format beforehand then this problem goes away.

   Could anyone direct me to some references or available (or example) 
fortran subroutines to make this type of scheme work?

Thanks!
John Hernlund