MATLAB: Running a project using genetic algorithm

Global Optimization Toolbox

I want to run a project using genetic algorithm and I don't know how.

This project have 4 functions that I attached this thesis here.

functions m files are in this thesis.

thank you guys.

Best Answer

Try changing the first line in all your files.

.m should start with:

function GAmodule

And penalty2.m should start with:

function [fitness]=penalty2(chromosome,available,bc,Dof,E,f,fixedcoord,na,nb,neft,ne,vt,nl,nn,numbitCoordX,numbitCoordY,numbitEdof,numbitEp,sq,TOPGSM,xspan,yspan);

And bintranslate.m should start with:

function [Coord,Edof,Ep]=bintranslate(available,chromosome,Dof,fixedcoord,na,nb,neft,nevt,nl,nn,numbitCoordX,numbitCoordY,numbitEdof,numbitEp,xspan,yspan);

And FEM2.m should start with:

function [Ed,Ex,Ey,v1,v2,w,wrong]=FEM2(bc,Coord,Dof,E,Edof,Ep,f,neft,nevt,sq,TOPGSM);

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MATLAB: Update variable and save previous values of an edit box each time i hit a button

antoine - rather than saving your updated Nodes variable to the base workspace, why don't you just save it to the handles structure much like you do with the counter?

 function Next_Callback(hObject, eventdata, handles)
 handles.counter = handles.counter + 1;
 if ~isfield(handles,'Nodes')
     handles.Nodes = [];
 end
 X = str2double...;  % I'm omitting code here, just use yours
 Y = str2double...;
 Z = str2double...;
 handles.Nodes = [handles.Nodes ; [X Y Z] ];
 guidata(hObject,handles);

With the above, you don't even need the counter (unless you are using it because you have already specified the size of Nodes?).

MATLAB: Number of variables (NVARS) must be a positive integer.

In this line (Line 163):

[x,fval]=ga(@(x) penalty2(x,available,bc,Dof,E,f,fixedcoord,na,nb,neft,nevt,nl,nn,numbitCoordX,numbitCoordY,numbitCoordZ,numbitEdof,numbitEp,sq,TOPGSM,xspan,yspan,zspan),(nn-nb-nl)*(numbitCoordX+numbitCoordY+numbitCoordZ)+(neft+nevt)*numbitEp+2*nevt*numbitEdof,options);

the ga function is taking this value:

(nn-nb-nl)*(numbitCoordX+numbitCoordY+numbitCoordZ)+(neft+nevt)*numbitEp+2*nevt*numbitEdof

to be ‘nvars’. It has to be an integer >0. I would use the ceil function to round it up to the next integer value, and include a check that it is >0.

For example, put this assignment and if block somewhere before your ga call:

Nvars = ceil((nn-nb-nl)*(numbitCoordX+numbitCoordY+numbitCoordZ)+(neft+nevt)*numbitEp+2*nevt*numbitEdof);  
if Nvars <= 0
    error('NVARS must be greater than zero.')
end

then when it meets the criteria, use ‘Nvars’ (or whatever you want to call it) in your ga call.

Best Answer

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MATLAB: Update variable and save previous values of an edit box each time i hit a button

MATLAB: Number of variables (NVARS) must be a positive integer.

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