Finding Maximum Value of a Table/Categorical Array

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Claire Hollow
Claire Hollow 2020-6-10
评论： Paresh yeole 2020-6-10
Hello! I have a question I can not get past. I have a 23000x1 table (named TMAX). It is a categorical array so it is mostly numbers but where the data is missing it is filled in with 'NA'. I am simply just looking to find the maximum value in the table. I did try
max(tmax);
but I get the error
Error using max
Invalid data type. First argument must be
numeric or logical.
I am not how to get past the NA's in there. Would even be open to switching them to NaN, whatever is simplest. Thank you in advance for the help!

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Paresh yeole
Paresh yeole 2020-6-10
编辑：Paresh yeole 2020-6-10
first convert categorical to numeric array :
tmax = str2double(cellstr(tmax));
tmax(tmax == 'NA') = NaN;
max(tmax)
convert the 'NA' into NaN.
max function by default ignores the NaN values
  2 个评论
Claire Hollow
Claire Hollow 2020-6-10
I tried doing that but got the following error:
Error using cellstr (line 49)
Conversion to cellstr from table is not
possible.
Error in c02_warmestday (line 10)
tmax = str2double(cellstr(tmax));
I'm very thrown off because there is no line 49 either.

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