How to create/update a mesh for a 3D h5-file

[sshestov]

Hello,
I'm trying to analyze an h5 file with several quantities -- scalar like rho,temperature, and vector like and B -- on a simple rectangular 3D mesh (model of a solar corona). The h5 files have relatively simple structure, however the information about spatial extent is stored separately in the file, as 3 "linear" arrays xm, ym, zm. So, when I do lineouts of the quantities and compare files with different size/scale -- the first file has 121x121x121 pixels and spans from -2 to +2 in each coord, while the second one has 501x501x501 and spans from -5 to +5 in each coord -- I get very different profiles, with grid coordinates, not the physical extents.

Thus I need to create a new mesh with proper coordinates ... or do something else. Can you suggest which direction should I go?

The file information for the smaller file says (both files have similar structure)

...
	Name = "temp"
	Mesh is = "mesh_121x121x121"
	Centering = zone centered.
	The extents are not set.
	This variable does not contain enumerated values.

	Name = "xm"
	Mesh is = "mesh_1x1x121"
	THIS VARIABLE IS TO BE HIDDEN FROM THE GUI.
	Centering = zone centered.
	The extents are not set.
	This variable does not contain enumerated values.
...
	same for ym and zm 
...
Curves: 
	Name = "Scalar_Curves/xm"
	Original Name = "xm"
	Mesh is = "mesh_1x1x121"
	Centering = unknown centering.
	The extents are not set.
	Units = x:, y:
	Labels = x:X-Axis, y:Y-Axis
	Re-interpreted from 1D scalar named "xm"

[JustinPrivitera]

Are you looking for another file format with which to get your data into VisIt?

You may try the Silo File Format.

Or another of these file formats.

Blueprint is very easy to work with.

[sshestov]

Thanks for you suggestion!
No, I was rather thinking is it possible to create a new mesh (or do something else) with the current format. May be that can be done using expressions? In general I can analyze the files with another software (in my case IDL); but I thought it should be possible with Visit also.

[JustinPrivitera]

Perhaps another @visit-dav/visit-developers who is more familiar with the h5 format can weigh in here.