Why does polyfit not exist in r2019b?

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Carsten Frauenheim
Carsten Frauenheim 2019-12-10
编辑： Adam Danz 2019-12-10
I cannot seem to get polyfit to work - and it seems like my copy doesn't even think it exists:
>> help polyfit
polyfit is a variable of type double.
>> doc polyfit
polyfit is a variable of type double.
Any help would be appreciated!

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Adam Danz
Adam Danz 2019-12-10
编辑：Adam Danz 2019-12-10
It does exist in r2019b. https://www.mathworks.com/help/matlab/ref/polyfit.html
You have a variable with the same name so Matlab no longer has access to the function until you delete the variable. clear('polyfit')
Rename the variable and the problem is solved.

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