why does matlab tell me that the "chop" command doesn't exist?
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why does matlab tell me that the chop command doesn't exist?
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per isakson
2020년 3월 28일
편집: per isakson
2020년 3월 28일
Make sure that you have the Control System Toolbox. chop() is a function in that toolbox.
>> product_info = ver('control')
product_info =
struct with fields:
Name: 'Control System Toolbox'
Version: '10.5'
Release: '(R2018b)'
Date: '24-May-2018'
>>
Maybe chop() is removed. It was obsolete in R2018b.
>> which chop -all
C:\Program Files\MATLAB\R2018b\toolbox\control\ctrlobsolete\chop.m
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Walter Roberson
2020년 3월 29일
https://www.mathworks.com/matlabcentral/answers/101885-how-do-i-install-additional-toolboxes-into-an-existing-installation-of-matlab
Note that you will need to be licensed for the toolbox.
You should also have a look at the round() call and consider what behavior you need. For example if you have chop(1.2468,2) do you want 1.25 or do you want (the closest representable number to) 1.24?
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Walter Roberson
2020년 3월 28일
MATLAB does not contain any chop() function, unless it is a method for some object that I cannot think of at the moment.
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Steven Lord
2020년 3월 28일
Cleve's original version of MATLAB had a chop command as you can see from the user's guide, but I'm not sure there is such a command in any MathWorks product right now. Did you perhaps want to use Professor Nick Higham's File Exchange submission? If so you'll need to install that add-on -- the easiest way to do that is to use Add-On Explorer.
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