How can I remove the black line from the bottom of histogram plotting?

My code is as below:

f=imread('D:\001_1.bmp');
figure(1)
imshow(f,[]);
figure(2)
imhist(f);axis([0 255 0 140]);

Answer 1

[Image Analyst]

Try this:

fontSize = 20;
grayImage=imread('cameraman.tif');
subplot(1,2,1)
imshow(grayImage,[]);
axis on
subplot(1,2,2)
[counts, bins] = histcounts(grayImage, 256);
bar(bins(1:end-1), counts, 'BarWidth', 1);
title('Histogram', 'FontSize', fontSize);
xlabel('Gray Level', 'FontSize', fontSize);
ylabel('PixelCount', 'FontSize', fontSize);
grid on;
xlim([0,256])

% Set up figure properties:
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);
% Get rid of tool bar and pulldown menus that are along top of figure.
set(gcf, 'Toolbar', 'none', 'Menu', 'none');
% Give a name to the title bar.
set(gcf, 'Name', 'Demo by ImageAnalyst', 'NumberTitle', 'Off')

[Batool Engineer]

thank you but for Sorry!!! I tried again but the following error appeared!!!

Undefined function 'histcounts' for input arguments of type 'uint8'.

Error in Bmain (line 14) [counts, bins] = histcounts(grayImage, 256);

[Batool Engineer]

I'm using MatlabR2013a

[Image Analyst]

Then use hist() instead of histcounts(). Or better yet, upgrade if you can.

[Batool Engineer]

thank you so much

but still the error exist!!

Error using .* Integers can only be combined with integers of the same class, or scalar doubles.

Error in hist (line 78) xx = miny + binwidth*(0:x);

Error in Bmain (line 14) [counts, bins] = hist(grayImage, 256);

>>

[Image Analyst]

Try casting to double and using (:):

[counts, bins] = hist(double(grayImage(:)), 256);

[Batool Engineer]

I am so thankful for your help. The histogram was appeared as I like

Thank you again

Answer 2

[Image Analyst]

f=imread('D:\001_1.bmp');
subplot(1,2,1)
imshow(f,[]);
subplot(1,2,2)
histogram(f, 256);
axis([0 255 0 140]);

[Batool Engineer]

I tried to run it but the following error appeared!!

Undefined function 'histogram' for input arguments of type 'uint8'.

Error in Bmain (line 12) histogram(f, 256);

[Adam]

Which version of Matlab are you using? Histogram was introduced in R2014b

[Batool Engineer]

I'm using Matlab R2013a