I am currently trying to plot the evolution of stress at certain points via the h5 output files. I’m having trouble inferring the location of each cell. I recognize that I have 375 cells from /topology/cells (of the h5 file) and equal number of stress outputs in space. From the vertex ID’s of the /topology/cells I can see that I am working with ID’s from 0 to 503. However, /geometry/vertex has coordinates of 1024 vertices. How do I infer the location of cells using the h5 data?

See examples/2d/gravity/plot_soln.py. Here are the important lines:

```
cells = numpy.array(h5['topology/cells'][:], dtype=numpy.int)
cellCoords = vertices[cells,:]
cellCenters = numpy.mean(cellCoords, axis=1)
```

`cells`

is the array of vertices in each cell.

`cellCoords`

is an array of the coordinates of the vertices of each cell.

`cellCenters`

is the coordinates of the center of each cell.

Perfect. Thank you so much for the help as always.