Invalid data type. First argument must be numeric or logical.

I use max max(I(:)), min(I(:)) from the official's matlab documentation https://uk.mathworks.com/help/images/create-new-dicom-series.html

And I get the error (see subject line)

Any help?

[Ameer Hamza]

Have you correctly followed the example there? It appears that during processing you have changed I.

[KSSV]

Can you tell what is class of I?

[per isakson]

I cannot reproduce your problem on R2016a.

Could it be that min and/or max is shadowed on your system. Run

which min -all
which max -all

and show us the results