why does matlab tell me that the "chop" command doesn't exist?

17 次查看（过去 30 天）
Bodo Christian
Bodo Christian 2020-3-28
评论： Bodo Christian 2020-3-29
why does matlab tell me that the chop command doesn't exist?

请先登录，再回答此问题。

采纳的回答

per isakson
per isakson 2020-3-28
编辑：per isakson 2020-3-28
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
  4 个评论
显示 2更早的评论
Walter Roberson
Walter Roberson 2020-3-29
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?
Bodo Christian
Bodo Christian 2020-3-29
thanks I managed to install the Tool. I have an academic license because I am studying at the Politecnico of Turin. The command was for use in an exercise. I'm at the first approach with matlab thanks to everyone for the answers.

请先登录，再进行评论。

更多回答（2 个）

Walter Roberson
Walter Roberson 2020-3-28
MATLAB does not contain any chop() function, unless it is a method for some object that I cannot think of at the moment.
Perhaps you want https://www.mathworks.com/matlabcentral/fileexchange/70651-chop
Steven Lord
Steven Lord 2020-3-28
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.

类别

在 Help Center 和 File Exchange 中查找有关 Introduction to Installation and Licensing 的更多信息

标签

产品


版本

R2019b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by