convert data file into a image file using MATLAB

Question

I need to convert a data file into ppm/png/any other format using Matlab ? I have a data file having one column and 250000 rows of integer numbers, ranging from 0 to say 5. Data (say) in file are as follows:

I want to write these data into a image file say ppm, jpeg or any other format, how can I do it using Matlab ?

place all of these values in a matrix and then convert that matrix into image — Freak, Jun 14 '13 at 11:11

score 2 · Accepted Answer · answered Jul 07 '13 at 18:40

2

Let your data be A.

A = 1:12;
B = reshape(A,4,[]);
B =
     1     5     9
     2     6    10
     3     7    11
     4     8    12

I = mat2gray(B); %converts the matrix A to the intensity image I
imwrite(I,filename,fmt)

answered Jul 07 '13 at 18:40

Zero

74,117
18
147
154

I have already found the same solution. It works perfectly. I should have posted it here. Anyways, thanks for the useful posting. – ADK Jul 09 '13 at 09:59

convert data file into a image file using MATLAB

1 Answers1