how do i make an expression to the left of the equals sign a valid target so i can get rid of this error?

[find(stock.permno)]==notrading(1);

for i=1:18522

    if i=10137
      newt=((find (toremove(i)==c)),:)=[];

          for i=0:4

      t((1+(i*126)):(126+(i*126)),:)=c((253+(i*378)):(379+(i*378)),:);
  end

for i=1:5
    trade(i).permno=top5(i,1);
    for ii=0:4
        trade(ii+1).price=d(1+(ii*252):252+(ii*252),4);
end

[KSSV]

if i == 10137

Answer 1

[Jan]

Please post the complete error message, if you mention, that there is a problem. Thanks.

This will fail also:

      newt = ((find(toremove(i)==c)),:) = [];

It is hard to guess the intention of wrong code. So please explain, what this line should do, such that we can post the correct version without confusing you with guessed code.

This line is suspivious:

t((1+(i*126)):(126+(i*126)),:)=c((253+(i*378)):(379+(i*378)),:);

For e.g. i=1 you get:

t(127:252,:)=c(631:757,:);

This is 126 elements on the right side and 125 elements on the left. The assignment cannot work.

What is the prupose of this line:

[find(stock.permno)]==notrading(1);

The comparison with == is not useful here, because the result is not stored anywhere.

Add comments to your code, which define the purpose of every single line of code. This helps at writing and debugging the code. Having just the failing code does not allow to draw conclusions about its purpose - neither for the readers in the forum, nor for yourself, if you want to modify the code in 2 months.