Fixing a bug with default ParticleFile outputdt value

[erikvansebille]

Removing the outputdt=np.inf default value in ParticleFile.__init__. This fixes #1806

[VeckoTheGecko]

Looks good. I think it was introduced in 23f0bd7 , @erikvansebille do you know what the interpretation of np.inf for outputdt was for? (e.g., not writing the outputs?) Its been a while since that commit, so perhaps just drift

[erikvansebille]

@erikvansebille do you know what the interpretation of np.inf for outputdt was for? (e.g., not writing the outputs?) Its been a while since that commit, so perhaps just drift

The timings of the different callbacks in pset.execute (output, input, repeated, callbackdt etc) are set to np.inf if they are not used, see the line below
https://github.com/OceanParcels/Parcels/blob/07428683c2620030ed626037e2608746f4ffe544/parcels/particleset.py#L1086
and
https://github.com/OceanParcels/Parcels/blob/07428683c2620030ed626037e2608746f4ffe544/parcels/particleset.py#L1152