Your corresponding C++ type for this array would be
std::vector<std::vector<int>>
such as for storing cells in mixed meshes, like quads and triangles mixed?
If so, you need a variable-length array data type of type integer, i.e.,
HDF5 will see it as
vector<hvl_t>
It's not overly efficient to use variable-length data types, so it would
be better to sort the cells into groups 3-element and 4-elements, and
save that as two datasets of constant-length data type, but if the size
of elements must be mixed in one dataset, then a variable length data
type will be a direct match of that structure.
Werner
On 17.10.2016 18:34, Steven Walton wrote:
So I'm wondering if there is a good way to write an irregular shaped
2D array into hdf5. And example of this would be like storing vtk node
connections for an unstructured grid. First number noting the cell
type and the next numbers denoting the nodes.
9 23 41 54 12
9 46 29 19 60
5 93 18 58
5 29 58 17
9 50 38 58 95
So the array has some rows that are length 5 and others that are
length 4 (or arbitrary). I understand how to do this with C++ vectors
and push_back, but those don't create contiguous arrays. Is there
another way to create this in a way that HDF would accept?
-Steven
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Dr. Werner Benger Visualization Research
Center for Computation & Technology at Louisiana State University (CCT/LSU)
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