I use max max(I(:)), min(I(:)) from the official's matlab documentation And I get the error (see subject line) Any help?

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

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Stelios Fanourakis 2018-5-10

编辑： per isakson 2018-5-10

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?

KSSV 2018-5-10

Can you tell what is class of I?

per isakson 2018-5-10

编辑：per isakson 2018-5-10

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

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