I am trying to use imshow to take data in a .txt file and print out the image made from the data.

12 visualizaciones (últimos 30 días)
So far my code looks like this
a = dlmread('data.txt');
imshow(a);
But when I go to run the code I get an error saying "Error using abs too many input arguments." The .txt file has a ton of data points inside it and I made sure to save the .txt file in the same folder as my code so I am not sure why it is not able to read my data.
  2 comentarios
DGM
DGM el 26 de Oct. de 2021
How is the data formatted in the text file? What is the size of a?
It would probably help to just attach the text file.
ssmith
ssmith el 26 de Oct. de 2021
The data is formatted as (x, y, z, grayscale) The file is too large to attach the file.

Iniciar sesión para comentar.

Respuesta aceptada

DGM
DGM el 26 de Oct. de 2021
Editada: DGM el 26 de Oct. de 2021
I'm going to guess that this is the same homework assignment. If not, similar operations should apply. The example only shows how to rectify the image from the vectorized positional and intensity information. You'll have to figure out how to read the data from the file into the corresponding vectors and deal with the output scaling/casting as mentioned.
  10 comentarios
DGM
DGM el 27 de Oct. de 2021
I don't know why you'd get an error about a function/variable called "first". There isn't anything in the code called "first".
If you don't have mat2gray(), I'm guessing you don't have Image Processing Toolbox. You can do this instead for that line:
%A = mat2gray(a(:,4)); % normalize (needs IPT)
A = normalize(a(:,4),'range'); % normalize without IPT
ssmith
ssmith el 27 de Oct. de 2021
Editada: ssmith el 27 de Oct. de 2021
That worked! Thank you so much for your help!!!

Iniciar sesión para comentar.

Más respuestas (0)

Categorías

Más información sobre Startup and Shutdown en Help Center y File Exchange.

Etiquetas

Community Treasure Hunt

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

Start Hunting!

Translated by