# how can i solve a warnning saying the length of lower bound is > length of( x)

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metasebia dabi il 4 Lug 2021
Commentato: Cris LaPierre il 6 Lug 2021
i am new to matlab i have attached my code can you help me please
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metasebia dabi il 4 Lug 2021
metasebia dabi il 4 Lug 2021
but when i pass this i get the result but the result is a pareto front with single result how can i fix this?
i have attached the results for you!
best regards
metasebia

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### Risposta accettata

Cris LaPierre il 4 Lug 2021
I had to fix another error first.
Error in main (line 14)
Aineq=[0,6,-1,0,0,0,o,o];
It looks like you added the letter "o" instead of the number 0 for the last 2 values.
The red text that follows the warning is there to help you find and fix the error.
The number of columns in A must be the same as the number of variables.
The error pointing back to main is the one you should look at:
Error in main (line 23)
[x_gal,fval_gal,~,gaoutput1]=gamultiobj(fun,7,Aineq,bineq,Aeq,Beq,lb,ub,@nonlcon,opts_ga);
You say you have 7 variables, but Aineq contains 8 values. Change your nvars input to 8 (or Aineq and Aeq to 7 values) and this warning and error will go away..
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### Più risposte (1)

metasebia dabi il 4 Lug 2021
thank you but i have an other problem pareto front with single one point solution
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Cris LaPierre il 6 Lug 2021
I'm not familiar with your equation or your application, so can't comment extensively. Perhaps all other solutions are considered inferior to this single solution. This may be because of the high dimension of your equation (8), or the constraints you have placed on them, or of the problem space itself.
See here.

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