Yalmip error : undefined function sdpvar

2016 8 11
3 个回答
回答已采纳
更新时间：2021 11 4
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0 个投票

Hello I have installed yalmip. Then i checked that it works through writing yalmip in the command window , and it gives : yalmip yalmip Returns various information about yalmip
yalmip can be used to check version numbers and
find the SDPVAR and SET objects available in workspace
EXAMPLES
V = yalmip('version') % Returns version
yalmip('nvars') % Returns total number of declared variables
yalmip('info') % Display basic info.
yalmip('solver','tag') % Sets the solver 'solvertag' (see sdpsettings) as default solver
If you want information on how to use yalmip, you are advised to check out
http://users.isy.liu.se/johanl/yalmip/
See also YALMIPTEST, YALMIPDEMO
now when i try to define an sdpvar it gives an error message: undefined function sdpvar. how can i solve this please ? Thanks in advance

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 采纳的回答

Johan Löfberg
Johan Löfberg 2016-8-11

1 个投票

You must have failed with the installation such as unzipping and/or setting the path. Show us your path, and a "dir" performed in the yalmip directory
BTW, a much better place to post yalmip questions is https://groups.google.com/forum/?fromgroups#!forum/yalmip

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chen jiyuan
chen jiyuan 2021-11-4
The commend run like
constraint_ml = set(cone(zz,y2));
, and an error comes. Could please help me to solve this problem.
"SET has been considered obsolete for many years, and the time has come...
Update your code. https://yalmip.github.io/tutorial/basics/
wrong use constraint/set
Obsolete command"

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更多回答（2 个）

Sana Ben Hmouda
Sana Ben Hmouda 2016-8-11
编辑：Sana Ben Hmouda 2016-8-11

0 个投票

Hello, Thanks a lot for your prompt answer. I may have resolved this problem by one of these solutions that i have tried all: - uninstall all previous yalmip versions existing in my matlab path / or in my laptop - download the newest version of yalmip - add the required folders to matlab path in the same order mentioned in the tutorial so that i get sure that i added them all. - save the already added folders - run " clear classes " before trying yalmiptest
Then everything worked fine Thanks again for your help and i do appology for mentioning this late.
Sana
Waseem Abbasi
Waseem Abbasi 2019-6-24
编辑：Waseem Abbasi 2019-6-24

0 个投票

dear i face the problem that when i used set command, the following error come:
SET has been considered obsolete for many years, and the time has come...
Update your code. https://yalmip.github.io/tutorial/basics/
Error using constraint/set (line 6)
Obsolete command
Error in chap5_1 (line 14)
L=set(FAI<0);
The last coomand i used after my sdpvar command.

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