how can i make histogram without missing value(with nan,isnan)

please help me.

i want calculate wind direction and speen without Missing values(they are appeared -999) and then display it's frequency with histogram.

so i used nan,isnan but it didn't work it apear like this picture(sky blue color). how can i do to make the latter picture(blue one)?

) ?

Answer 1

[gonzalo Mier]

You can remove nan before computing the histogram

histogram(ws(~isnan(ws(:))))

[jiyun Kim]

thank you!