Apologies for cross-posting, I'm hoping that someone from one of these two
lists can help with my problem.
I have an hdf5 file which contains a number of Datasets, and I'm having trouble
pulling out a subset of one of them. An h5ls of the file looks something like
this:
Var1 Dataset {64, 64, 64}
Var2 Dataset {1, 1, 100, 64, 64, 64}
I can successfully define a Grid for visualizing Var1 using:
<Grid Name="MyGrid">
<Topology
Typology Type="3DCORECTMESH" Dimensions="64 64 64" NumberOfElements="64
64 64">
</Topology>
<Geometry Type="ORIGIN_DXDYDZ">
<DataItem Name="Origin" DataType="Float" Dimensions="3" Format="XML">
0 0 0
</DataItem>
<DataItem Name="Spacing" DataType="Float" Dimensions="3" Format="XML">
1 1 1
</DataItem>
</Geometry>
<Attribute Active="1" Type="Scalar" Center="Node" Name="Var1">
<DataItem DataType="Double" Dimensions="64 64 64" Format="HDF">
DataFile.hdf5:Var1
</DataItem>
</Attribute>
</Grid>
For Var2, the last three dimensions (64, 64, 64) corresponds to a 3DCORECTMESH,
similar to Var1. So, in this example, I would have 100 of them (the first two
dimensions of the array are 1, but in future cases they will not be.) I have
tried without success to define a HyperSlab or a SubSet that will allow me to
extract one of those 64^3 volumes from this multidimensional array. Has
anyone here done something like this before? I would have thought that this
would be relatively straightforward, but I have not had any luck finding any
examples that do quite the right thing. I'm hoping that this is possible
without reading the entire array from disk, as this won't be possible as the
sizes increase.
Any pointers or suggestions would be much appreciated.
Thanks,
joe.
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