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please give correction in code

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Lalit Patil
Lalit Patil 2012-11-29
关闭： MATLAB Answer Bot 2021-8-20
The image and code is
http://speedy.sh/xGRcF/l.jpg
clear all;
clc;
I = imread('l.jpg');
%RGB = RGB(:,:,3);
%GRAY = rgb2gray(I);
threshold = graythresh(I);
originalImage = im2bw(I, threshold);
i = bwareaopen(originalImage,350);
imshow(i)
m = max(max(i));
[r c] = find(i == m);
fid = fopen('lalit1.txt','wt');
for j=1:length(r)
fprintf(fid,'%f %f\n',r(j),c(j));
end
fclose(fid);
data = textread('lalit1.txt');
r = unique(data);
for i=r',
c = data(data(:,1)==i,2);
z(i,1) = mean([min(c) max(c)]);
end
This shows error..
??? Subscripted assignment dimension mismatch.

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回答（2 个）

Andrei Bobrov
Andrei Bobrov 2012-11-29
编辑：Andrei Bobrov 2012-11-29
last 6 rows:
r = unique(data);
z = nan(numel(r),2);
for i1 = 1:numel(r)
c = data(data(:,1)==r(i1),2);
z(i1,:) = mean([min(c) max(c)]);
end
  4 个评论
显示 2更早的评论
Lalit Patil
Lalit Patil 2012-11-29
Yeh, now it is working, but all values of Z are Nan.. Why.?
Walter Roberson
Walter Roberson 2012-11-29
That would happen if r was empty.
textread() is obsolete. Please recode using textscan().
Walter Roberson
Walter Roberson 2012-11-29
Where does it show that error?
If it is the z assignment in the for loop, then put a breakpoint in at the assignment and show us size(c), and size(mean([min(c) max(c)]))
  3 个评论
显示 1更早的评论
Walter Roberson
Walter Roberson 2012-11-29
Which line is it producing the error message against?
Lalit Patil
Lalit Patil 2012-11-29
problem get solved..
I have changed only
c = data(data(:,2)==i,1);
Thank you...!

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