Rounding when converting MATLAB data to JSON

[oetcoleman]

Noticed that when MATLAB generates the JSON after calling fig2plotly(), it may round the data such that it displays incorrectly in Plotly. It particularly happens with datenums, e.g. where 7.357676e+05 in the JSON doesn't have enough resolution to distinguish seconds.

e.g.

dts = datenum('2014-06-01 12:00'):(1/24/3600):datenum('2014-06-01 15:00');
data = sin((2*pi/length(dts))*(1:length(dts)));
figure; plot(dts,data);
datetick;
fig2plotly();

[BRONSOLO]

Thanks! The rounded data has been fixed - next pr. There stills seems to be an issue with datenum hours being +4 ahead. I'll look into this.

[oetcoleman]

Thank you!