MATLAB: How to find values from text file

MATLABmeantextreadunique

http://www.fileconvoy.com/dfl.php?id=geb61da744e17a7e317160537eeb2790920d297

I = imread('Image.jpg');
i = I(:,:,3);
m = max(max(i));
[r c] = find(i ==m );
fid = fopen('lalit.txt','wt');
for j=1:length(r)
fprintf(fid,'%f %f\n',r(j),c(j));
end
fclose(fid);

in this text file min(r) = 1 and max(r) = 554..

for each r there is more than one value..

like, for each r =222, there is c = 231,419,421,422,424,425,426,427,428,429,430,431,432,433,434,438 so i want Z = round((max(c) + min(c))/2); = round((231 + 438)) = 335

and i want this for all r…

and then want to plot that values plot(z,r)

So, how to do this..?

Best Answer

data = textread('lalit.txt');
r = unique(data);
for i=r',
    c = data(data(:,1)==i,2);
    z(i,1) = mean([min(c) max(c)]);
end
plot(r,z)

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MATLAB: How to make code global

 >>arrayfun(@(i) myFunction(i),1:100);

myFunction.m

function [] = myFunction(imageNumber)
%RGB = imread('Image100.jpg'); 
RGB = imread(sprintf('Image%d.jpg',imageNumber));
GRAY = rgb2gray(RGB);
threshold = graythresh(GRAY);
originalImage = im2bw(GRAY, threshold);
i = bwareaopen(originalImage,350);
%imshow(i),
m = max(max(i));
[r c] = find(i == m);
%fid = fopen('lalit1.txt','wt');
fid = fopen(sprintf('Image%d_lalit1.txt',imageNumber),'wt');
for j=1:length(r),
    fprintf(fid,'%f %f\n',r(j),c(j));
end
fclose(fid);
%data = textread('lalit1.txt');
data = textread(sprintf('Image%d_lalit1.txt',imageNumber));
r = unique(data);
%z = zeros(size(r));
for i=r',
    c = data(data(:,1)==i,2);
    z(i,1) = mean([min(c) max(c)]);
end
%fid = fopen('lalit2.txt','wt');
fid = fopen(sprintf('Image%d_lalit2.txt',imageNumber),'wt');
for j=1:length(r),
    fprintf(fid,'%f %f\n',r(j),z(j));
end
fclose(fid);
B = 1:480;
B = B';
missingvalues = setdiff(B,r);
%fid = fopen('lalit3.txt','wt'); 
fid = fopen(sprintf('Image%d_lalit3.txt',imageNumber),'wt'); 
%q = zeros(1,length(missingvalues));
for j=1:length(missingvalues),
    q(j) = 0; 
    fprintf(fid,'%f %f\n',missingvalues(j),q(j)); 
end
fclose(fid);
%outfid = fopen('all_Image.txt', 'wt'); 
outfid = fopen(sprintf('Image%d_all.txt',imageNumber), 'wt'); 
for j = 2:3,
    %filename = ['lalit' num2str(j),'.txt'];
    filename = sprintf('Image%d_lalit%d.txt',imageNumber,j);
    fwrite(outfid, fileread(filename));
end
fclose(outfid);

Best Answer

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