Index exceeds the number of array elements (1). Error coming in the code below

2 views (last 30 days)
Hi,
I am using one of the matlab function called CircleFitByTaubin but I am stuck on one of the line as shown in the error below and not sure how to correct this? If anyone can help here? I have attached the code, function and data here.
Error:
Index exceeds the number of array elements (1).
Error in CircleFitByTaubin (line 25)
Yi = XY(i,2) - centroid(2); % centering data
Error in circlefitting (line 9)
Par = CircleFitByTaubin(P);
  4 Comments
muhammad choudhry
muhammad choudhry on 23 Oct 2020
Hi,
there was 2 script attached one was best circle fit in which I am calling the function CircleFitByTaubin, which is also attached above please see CircleFitByTaubin.m , I want to use this code to cover most of the points in the circle and estimate the size of that circle and radius.
Thanks

Sign in to comment.

Accepted Answer

per isakson
per isakson on 23 Oct 2020
Edited: per isakson on 23 Oct 2020
I cannot reproduce (on R2018b) the error that you report:
Index exceeds the number of array elements (1).
Error in CircleFitByTaubin (line 25)
Yi = XY(i,2) - centroid(2); % centering data
Error in circlefitting (line 9)
Par = CircleFitByTaubin(P);
You have not provided the mfunction, circlefitting. There is no call to CircleFitByTaubin in bestcirclefit.m. The mfile, bestcirclefit.m, has an syntax error and isn't possible to run.
CircleFitByTaubin works as expected:
%%
XY = dlmread('test1.txt','\t',0,0);
%%
par = CircleFitByTaubin(XY);
and returns
>> par
par =
0.41541 0.30058 0.028124
  5 Comments
per isakson
per isakson on 24 Oct 2020
Search the File Exchange for fit ellipse. There are some submissions, which will help you earn the "plus point".
"to fit the points to the well defined shape" it's the other way round. One fits a model/equation/shape to data points.
And in the column to the right of this page there is an interesting link: Fitting Circles (again) and Ellipses

Sign in to comment.

More Answers (0)

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by