Need to format fieldname of structure in MATLAB

Question

I have field name which contains (.) for matlab structure

When I create structure, it throws invalid field name error

e.g

fieldName = 'Freq.01'

Structure

s.(fieldName) = 25;

Valid field names begin with a letter, and can contain letters, digits, and underscores. — Yuan
– Yuan, Commented Jul 25, 2014 at 12:49

SecretAgentMan · Accepted Answer · 2019-12-17 23:02:22Z

As pointed out in Yuans's comment, fieldnames must not contain '.'. This may be the case because the Value of a field can be another field. Maybe you want to replace the '.' with '_' and then use your new valid fieldname:

fieldname = 'Freq.01'; fieldname = strrep(fieldname, '.', '_'); s.(fieldname) = 25 s.('hello').('world') = 17

Edric · Accepted Answer · 2014-07-28 07:32:49Z

You can use matlab.lang.makeValidName to convert an invalid name such as 'Freq.01' into something that is a valid name. (This is only available in relatively recent versions of MATLAB).

In older versions of MATLAB, you can use genvarname.

Thanks, Do you have idea, whether it is available in MATLAB version R2010b SP1

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