On Thursday 10 April 2003 12:16, Lloyd A Treinish wrote: > In regions where the grid overlap, you need to indicate the nodes or cells > you don't want to use as invalid. The component "invalid positions" or > "invalid connections" of the particular member of the multigrid will take > care of that. You can also do operations based upon your own attribute to > select members that you or do not want to process. >
Yes, but what do I use to delete (or ignore) for example all member fields with a "level" attribute less than, say, 3 ? Note that the number of these fields is not known a priori, and can be quite large. Another thing I noted is that when I use "Post" to convert my connection dependent data to position dependent data, the invalid connections component is not converted to an invalid positions component, this generates some strange interpolation values at borders between grids. How should I "translate" the invalid connection component? Original Question: > Hi everybody, > > A few weeks ago I started using OpenDX to visualize my simulation data from > a > finite-volume hydrodynamics code with mesh refinement. I've written a > Fortran90 routine that generates a dx-native datafile with header (array > rearrangement galore :) ). > > > Basically it writes a large multigrid group with grids from several levels > of > mesh refinement. I would like to know if it is possible to delete (in dx) > members from this group based on an attribute (i.e. the level number) > > > Also, how do I avoid the error message from realization modules (like > RubberSheet) when a field (or multigrid group) has no valid connections, > i.e. > it is completely covered by finer meshes? > > > Thanks in advance, > greetings, > Jeroen Bergmans
