Unrecognized function or variable 'nufft' in matlab R2019b

I'm using Matlab R2019b and trying to use nufft syntax.

Howevet I got warning "Unrecognized function or variable 'nufft' "

Eventhough I run the example test provided in https://au.mathworks.com/help/matlab/ref/double.nufft.html#mw_f93dca1a-78a2-4dd4-8b98-84462b3233c3

Is anyone here know the reason?

Thanks before,Luh

Answer 1

[Chris Turnes]

The nufft and nufftn functions were added in R2020a, so if you want to use these functions you would need to update to a later release. You can generally find this information at the bottom of the documentation pages.

[Luh Putri Adnyani]

I see. Well noted Chris for your information.