Receptor density finger print value missing

[xgui3783]

as of 0.4a40

https://jugit.fz-juelich.de/t.dickscheid/brainscapes-configurations/-/blob/siibra-0.4a40/features/tabular/fingerprints/receptor/9472fabf-7b8b-4d50-94a8-88811e9b6666_PF_fp_20180405_AREA_PF_IPL.json#L11

the tsv file

https://object.cscs.ch/v1/AUTH_227176556f3c4bb38df9feea4b91200c/hbp-d000045_receptors-human-PF_pub/v1.0/PF_fp_20180405.tsv

does not have std entry for alpha2

[AhmetNSimsek]

Prof. Nicola Palomero-Gallagher is one of the custodians of the dataset. I've just informed her via email.

[AhmetNSimsek]

She has informed me that there is only one data point for alpha2 and hence the field is skipped.
Should we ask for a change to Nan? What do you think @xgui3783?

[xgui3783]

pandas actually automatically add NaN

but this poses a problem to:

• data serialization (I will have to add NaN to a possible value, and also, since NaN is not a valid json data type, encode it as null instead)
• data visualization (polar plot assumes mean & std are both present. with one missing the behavior is undefined)

[AhmetNSimsek]

@xgui3783, then should we carry this to siibra-explorer?
Is there anything that could help from siibra-python side?

[xgui3783]

I have transferred the issue to siibra-api.

I need to add:

• serialization of NaN to null
• serialization of df to possibly contain null