Why imhist do not run?

This is the code:

img = imread('peppers.png');
  imhist(img), grid;

Display error, why?

[Benjamin Kraus]

What error?

Answer 1

[Image Analyst]

First read this link.

Then post your complete error message - ALL THE RED TEXT.

And post the results of this (what do you see):

% Check that user has the specified Toolbox installed and licensed.
hasLicenseForToolbox = license('test', 'image_toolbox');   % license('test','Statistics_toolbox'), license('test','Signal_toolbox')
if ~hasLicenseForToolbox
  % User does not have the toolbox installed, or if it is, there is no available license for it.
  % For example, there is a pool of 10 licenses and all 10 have been checked out by other people already.
  ver % List what toolboxes the user has licenses available for.
  message = sprintf('Sorry, but you do not seem to have the Image Processing Toolbox.\nDo you want to try to continue anyway?');
  reply = questdlg(message, 'Toolbox missing', 'Yes', 'No', 'Yes');
  if strcmpi(reply, 'No')
    % User said No, so exit.
    return;
  end
end

Answer 2

[Abhishek Ballaney]

https://www.mathworks.in/help/images/ref/imhist.html

Answer 3

[Benjamin Kraus]

imhist is part of the Image Processing Toolbox. Could the problem be that you do not have a license for the Image Processing Toolbox?

Answer 4

[matlab9000]

No, it's a default image of Matlab