MATLAB Answers


Error using horzcat Dimensions of matrices being concatenated are not consistent.

Asked by hanif hamden on 26 Apr 2019
Latest activity Commented on by hanif hamden on 29 Apr 2019
Accepted Answer by Jan
I can't arrange my data as the error shows like this:
Error using horzcat.
Dimensions of matrices being concatenated are not consistent.
Error in DemoCircle (line 29)
TotalC = [y0, x0, listC]
I need help. This is my coding:
count(i) = sum(((x-x0(i)).^2+(y-y0(i)).^2<=R^2));
listC = count.'
TotalC = [y0, x0, listC]
y0 & x0 both value are 7125x1 double. same goes to listC. The problem is that when I run the coding with TotalC = [y0, x0, listC] ..The error shows as above.
Hope someone can help this


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1 Answer

Answer by Jan
on 26 Apr 2019
 Accepted Answer

Use the debugger to solve such problems. Type in the command window:
dbstop if error
Start the code again, and when the problem let Matlab stop, check the sizes of the used arrays:
I guess you want:
listC = count;
without transposing.


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TotalC = [y0(:), x0(:), listC(:)]
@hanif hamden: If all 3 variables have the size [7125 x 1], the vertical concatenation would work successfully. Please check this again.
yeah there some error from the data. I just fixed it then it works well. Thank you so much :)

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