How to give Gray color histogram gray shade instead of blue

Hi, I want the gray shade histogram for grayscale image. here is my code. Can any one help me

% for red color
figure;
imhist(Image_Data(:,:,2));
myHist = findobj(gca, 'Type', 'Stem');
myHist.Color = [0 1 0]
saveas(gcf,'Hist_Org_B.jpg');
%for green color
figure;
imhist(Image_Data(:,:,3));
myHist = findobj(gca, 'Type', 'Stem');
myHist.Color = [0 0 1]
saveas(gcf,'Hist_Org_G.jpg');

Answer 1

[Gautam]

Hello Sadika,

I assume that you want to change the colour of the histogram to grey just like the way you have changed to green and blue.

To do this you can use the RGB triplet value of [0.3711 0.3711 0.3711] which is for a shade of grey

figure; 
imhist(Image_Data(:,:,3)); 
myHist = findobj(gca, 'Type', 'Stem'); 
myHist.Color = [0.3711 0.3711 0.3711]; 

This gives the plot

Answer 2

[Image Analyst]

Try using the 'FaceColor' input of histogram.

% Create sample data.
data = rand(1, 1000); 
% Define custom color.
grayColor = [0.4, 0.4, 0.4];
% Plot histogram with 10 gray bins.
histogram(data, 'NumBins', 10, 'FaceColor', grayColor)