how to solve Subscripted assignment dimension mismatch.

Question

john karli 2018-12-25

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https://ww2.mathworks.cn/matlabcentral/answers/437136-how-to-solve-subscripted-assignment-dimension-mismatch

编辑： madhan ravi 2018-12-25

i have this code for joint pmf yesturday it was working good but now i'm facing the error.

[num,text,raw] = xlsread('UFOPOLLUTANTS.xlsx');
x=num(:,10); 
y=num(:,18); 
X=x(1:1000);
Y=y(1:1000);
observ=x(1:1000);    %
 
imageY=0:23;
nY = length(imageY);
observX = x(1:1000);
imageX=0:23; %Min value is 0 Max value is 172
nXx = length(imageX);
for i = 1:nXx
cX = imageX(i);
cnt(i) = sum(observX == cX);
end
pmfX = cnt/sum(cnt);
bar(imageX,pmfX)
imageY=0:23;
nY = length(imageY);
image = 0:23;
nX = length(image);
for i = 1:nX            % # of occurrences for each value of image of X in the total observations of column X
    cXi = image(i);
    cntX(i) = sum(observX == cXi);
         a=find(X==cXi)  ;
         p= Y(a) ;
    for j = 1:nY
        cX = imageY(j);
        P_y(i,j) = sum(p == cX);
    end
      u=P_y(i,:);
     d=sum(u);
     if (d==0)
         d=1;
     end
     an(i,i)=(P_y(i,:).*pmfX(i))./d;
     g=xlswrite('F:\Faheem\Study\1ST MS\stochatic system\Assignment\assgn5\snapshot\anaylysis3\jointpmf1.xls',an);
     
end

Error

an(i,i)=(P_y(i,:).*pmfX(i))./d;
Subscripted assignment dimension mismatch

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Answer 1

madhan ravi 2018-12-25

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/437136-how-to-solve-subscripted-assignment-dimension-mismatch#answer_353811

在 MATLAB Online 中打开

an(i,:)

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john karli 2018-12-25

jointentroy.PNG

may you solve joint Entropy in matlab formula for joint entropy is attached

madhan ravi 2018-12-25

编辑：madhan ravi 2018-12-25

Anytime :) , if my answer solved your question ("how to solve Subscripted assignment dimension mismatch".) make sure to accept the answer but not sure I can help with that let me try though.

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