clearvars does not work as indicated in documentation

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Matthew
Matthew 2015-9-7
回答： Jonathan Wharrier 2022-11-29
I'm having problems with clearvars.
Example 1:
>> A = 1; B = 2; C = 3; D = 4;
>> whos
Name Size Bytes Class Attributes
A 1x1 8 double
B 1x1 8 double
C 1x1 8 double
D 1x1 8 double
>> clearvars -except C D
>> whos
>>
(in other words, all variables are cleared)
Example 2:
>> A = 1; B = 2; C = 3; D = 4;
>> whos
Name Size Bytes Class Attributes
A 1x1 8 double
B 1x1 8 double
C 1x1 8 double
D 1x1 8 double
>> clearvars('-except','C')
>> whos
>>
>> A = 1; B = 2; C = 3; D = 4;
>> whos
Name Size Bytes Class Attributes
A 1x1 8 double
B 1x1 8 double
C 1x1 8 double
D 1x1 8 double
>> clearvars('*','-except','C')
>> whos
Name Size Bytes Class Attributes
A 1x1 8 double
B 1x1 8 double
C 1x1 8 double
D 1x1 8 double
>>
(doesn't clear anything)
Any help?
  2 个评论
per isakson
per isakson 2015-9-7
编辑：per isakson 2015-9-9
With R2013a
>> clear all
>> A = 1; B = 2; C = 3; D = 4;
>> clearvars -except C D
>> whos
Name Size Bytes Class Attributes
C 1x1 8 double
D 1x1 8 double
and
>> A = 1; B = 2; C = 3; D = 4;
>>
>> clearvars('*','-except','C')
>> whos
Name Size Bytes Class Attributes
C 1x1 8 double
Which version do you use?
Guillaume
Guillaume 2015-9-8
clearvars works for me in 2015a. As per said, you need to tell us which version you're using.
Have you shadowed the built-in clearvars per chance? What does
which clearvars
return?

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回答（1 个）

Jonathan Wharrier
Jonathan Wharrier 2022-11-29
You might try
clearvars -except
this works with the latest release. I typed clearvars on its own and it did not but this seems to work and clears all.

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