I'm trying to make an image with data from a .txt file

I have a data 80 lines by 10 columns, and I want to make an image with this data

How can I generate an image from a data set?

[Dyuman Joshi]

Read the data into MATLAB and display the image.

[silvia cano]

how?

Answer 1

[Voss]

M = readmatrix('data.txt');
imshow(M)

[silvia cano]

i get a similar result , but with my data the face of a woman is formed

[silvia cano]

data file

[Voss]

M = readmatrix('data_face.txt');

figure
imshow(M,[])

figure
imshow(M.',[])

Answer 2

[Star Strider]

Use readmatrix to read the file.

To display the image, then do something like this —

% writematrix(rand(80,10),'YourFile.txt')                 % Create Data (Omit This Step, Since You Already HAve A Text File)

Data = readmatrix('data_face.txt')                      % Read File

Data = 67×6

1.0e+09 * 0.5419 1.9369 0.5441 1.6319 1.1765 0.1744 1.2969 0.9786 1.6843 1.8360 1.9534 1.7013 1.2254 1.3803 1.4313 0.9776 1.8183 1.3932 1.0956 0.5407 0.8258 0.8758 0.8759 1.1639 1.2794 1.1295 1.1628 1.2124 1.1620 1.9181 1.2757 1.2293 1.3803 0.8085 1.3932 1.3138 1.2813 1.2796 1.5288 1.9199 1.6664 1.7017 0.5398 1.8354 0.5435 1.8519 0.6618 1.3308 1.0962 1.1633 1.3302 0.8410 0.8251 1.2793 1.0959 1.3138 1.0959 0.5407 1.7692 1.9537

Data = log2(Data)

Data = 67×6

29.0134 30.8511 29.0193 30.6039 30.1319 27.3780 30.2724 29.8661 30.6495 30.7739 30.8633 30.6640 30.1906 30.3623 30.4147 29.8647 30.7600 30.3757 30.0291 29.0102 29.6212 29.7061 29.7062 30.1163 30.2528 30.0731 30.1149 30.1752 30.1140 30.8370 30.2487 30.1952 30.3623 29.5907 30.3757 30.2910 30.2550 30.2531 30.5098 30.8384 30.6341 30.6644 29.0078 30.7734 29.0178 30.7863 29.3018 30.3097 30.0299 30.1156 30.3090 29.6475 29.6200 30.2528 30.0295 30.2911 30.0295 29.0102 30.7205 30.8636

figure
surf(Data)                                              % Use 'imagesc' To Display It (Consider Other Options As WEll)
% axis('square')                                          % Optional (Consider Other Options As Well)
colormap(turbo)                                         % Choose Appropriate Colormap

% view(0,90)

See the documentation on imagesc, axis, and colormap for details on those functions.

EDIT —

Is it encrypted or something? I also tried surf and contour and a log2 transformation and could not get a reasonable reasult.

.

[silvia cano]

thats a plot of data ? but you can generate and image with data_face.txt file?

[Star Strider]

Nothing I have tried helps with this.

Data = readmatrix('data_face.txt');                     % Read File

figure
imagesc(Data)
axis('equal')
colormap(gray)

Datar = imresize(Data, 5, 'bilinear');

figure
imagesc(Datar)
colormap(gray)
axis('equal')

Datar = interp2(Data, 5, 'makima');

figure
imagesc(Datar)
colormap(gray)
axis('equal')

.

Answer 3

[Image Analyst]

I get this:

% Demo by Image Analyst
clc;    % Clear the command window.
close all;  % Close all figures (except those of imtool.)
clear;  % Erase all existing variables. Or clearvars if you want.
workspace;  % Make sure the workspace panel is showing.
format long g;
format compact;
fontSize = 16;

%--------------------------------------------------------------------------------------------------------
%    READ IN TEST IMAGE
folder = [];
baseFileName = 'data_face.txt';
fullFileName = fullfile(folder, baseFileName);
% Check if file exists.
if ~exist(fullFileName, 'file')
    % The file doesn't exist -- didn't find it there in that folder.
    % Check the entire search path (other folders) for the file by stripping off the folder.
    fullFileNameOnSearchPath = baseFileName; % No path this time.
    if ~exist(fullFileNameOnSearchPath, 'file')
        % Still didn't find it.  Alert user.
        errorMessage = sprintf('Error: %s does not exist in the search path folders.', fullFileName);
        uiwait(warndlg(errorMessage));
        return;
    end
end
grayImage = readmatrix(fullFileName);
% Get the dimensions of the image.
% numberOfColorChannels should be = 1 for a gray scale image, and 3 for an RGB color image.
[rows, columns, numberOfColorChannels] = size(grayImage)

rows =     67

columns =      6

numberOfColorChannels =      1

%--------------------------------------------------------------------------------------------------------
% Display the image.
imshow(grayImage, []);
impixelinfo;
axis('on', 'image');
title('Original Gray Scale Image', 'FontSize', fontSize, 'Interpreter', 'None');
% Maximize window.
g = gcf;
g.WindowState = 'maximized';

I do not get a face of a woman like you do. Perhaps you attached the wrong data file. The file you attached has only 67 rows and 6 columns, not 80 rows and 10 columns.

[silvia cano]

i made a mistake about 80*10 , the right file is 67*6 . I don't get the woman's face either. i get a image similar than you . so if two diferent persons get the same result maybe something happen with the data

[silvia cano]

is my imagination on the middle look like two eyes

[Image Analyst]

I think it's your imagination.

https://www.uq.edu.au/news/article/2021/12/do-you-see-faces-things

https://en.wikipedia.org/wiki/Pareidolia