试用软件

Linprog error - The number of rows in A must be the same as the number of elements of b.

15 次查看（过去 30 天）

显示更早的评论

Andrew Alkiviades 2012-5-12

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/38191-linprog-error-the-number-of-rows-in-a-must-be-the-same-as-the-number-of-elements-of-b

采纳的回答： Alan Weiss

在 MATLAB Online 中打开

Hi , I am trying code a linprog optimisation

my code is

Aeq = [PV_power_output(:,:,K) WT_power_output(:,:,M) Bat_power_output]; % supply meets demand every hour
 beq = [Hourly_power_demand(j,i)];
 A = [PV_emissions_reduction(:,:,K) WT_emissions_reduction(:,:,M)    Bat_emissions_reduction];
 b = [0.8.*Current_emissions]; % Emissions reduction 20% 
x = linprog(f,A,b,Aeq,beq)

I get an error saying "The number of rows in A must be the same as the number of elements of b." Im not sure what detail Im missing since A has one row and b has one element as far I can see!

Thanks

1 个评论
显示 -1更早的评论隐藏 -1更早的评论

Walter Roberson 2012-5-14

PV_emissions_reduction(:,:,K) would normally be many rows.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Alan Weiss 2012-5-14

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/38191-linprog-error-the-number-of-rows-in-a-must-be-the-same-as-the-number-of-elements-of-b#answer_47768

在 MATLAB Online 中打开

After you enter your code, but before you call the last line

x = linprog(f,A,b,Aeq,beq)

I suggeset that you enter size(A) at the MATLAB command line to see how many rows MATLAB thinks A has.

Alan Weiss

MATLAB mathematical toolbox documentation

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

更多回答（0 个）

请先登录，再回答此问题。

类别

Mathematics and Optimization Optimization Toolbox Optimization Results Solver Outputs and Iterative Display

在 Help Center 和 File Exchange 中查找有关 Solver Outputs and Iterative Display 的更多信息

标签

Community Treasure Hunt

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

Translated by

试用软件