Get error message of 'Error using max Invalid data type. First argument must be numeric or logical' when I attempt to apply max function to a column of data
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Hi,
I'm new to MATLAB and am trying to apply the max function to the following column of data:
6.1101
5.5277
8.5186
7.0032
5.8598
8.3829
7.4764
8.5781
6.4862
5.0546
5.7107
14.164
5.734
8.4084
5.6407
5.3794
6.3654
5.1301
6.4296
7.0708
6.1891
20.27
5.4901
6.3261
5.5649
18.945
12.828
10.957
13.176
22.203
5.2524
6.5894
9.2482
5.8918
8.2111
7.9334
8.0959
5.6063
12.836
6.3534
5.4069
6.8825
11.708
5.7737
7.8247
7.0931
5.0702
5.8014
11.7
5.5416
7.5402
5.3077
7.4239
7.6031
6.3328
6.3589
6.2742
5.6397
9.3102
9.4536
8.8254
5.1793
21.279
14.908
18.959
7.2182
8.2951
10.236
5.4994
20.341
10.136
7.3345
6.0062
7.2259
5.0269
6.5479
7.5386
5.0365
10.274
5.1077
5.7292
5.1884
6.3557
9.7687
6.5159
8.5172
9.1802
6.002
5.5204
5.0594
5.7077
7.6366
5.8707
5.3054
8.2934
13.394
5.4369
with the following response:
Error using max Invalid data type. First argument must be numeric or logical.
I can't see what I'm doing wrong.
Can someone please help ?
Thanks
2 Comments
Stephen23
on 3 Oct 2018
What is the class of that data? Tell us the output of this command:
whos NameOfThatVariable
Accepted Answer
Stephen23
on 3 Oct 2018
Edited: Stephen23
on 3 Oct 2018
Your data has class table. Tables are a container class: they contain data of other classes:
You need to get the numeric data out of that table (container) before you can use it with a numeric operation. Getting numeric data out of a table is easy using any of the syntaxes that tables have for accessing their contents:
Probably you want something like
max(x.var)
where var is the name of the column (variable) in that table. You might find summary useful too.
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