invalid value encountered in cast

[berceanu]

I encountered a cast Warning and tracked it down to this line:

openPMD-viewer/openpmd_viewer/openpmd_timeseries/data_reader/io_reader/utilities.py

Line 70 in b36dc43

data = np.full(record_component.shape, NaN_value, record_component.dtype)

In order to see it, one needs to set np.seterr(all='raise'). I get:

    multiarray.copyto(a, fill_value, casting='unsafe')
  File "<__array_function__ internals>", line 200, in copyto
FloatingPointError: invalid value encountered in cast

Without raising warnings as errors, one just gets the warning, with no stack trace and no way to see where it is coming from.

<__array_function__ internals>:200: RuntimeWarning: invalid value encountered in cast

I suspect this is caused by having an int type which is being filled with NaN, that is of float type?

[ax3l]

I am not sure if we have not fixed this already with a978fc1 by now.

@berceanu can you retry and link a data set that shows the warning/error, so we can reproduce and fix it?