Flow-chart for NXdata reader developers

[woutdenolf]

After the NXdata improvements in #1396 it was suggested (#1396 (comment)) for provide a flow-chart like description on how a reader would interpret NXdata.

[woutdenolf]

Expand upon https://manual.nexusformat.org/datarules.html#find-the-plottable-data

See #1396 (comment) of #1396.

We start here:

https://manual.nexusformat.org/_images/flowchart-NXdata-signal.png

https://manual.nexusformat.org/_images/flowchart-v2-NXdata-signal.png

https://manual.nexusformat.org/_images/flowchart-v1-NXdata-signal.png