MATLAB: Computing the sum of each column in an image

duplicate post requiring mergingimage processingMATLABpixel density in each columnsum of pixels in a column.

Hi i want to find out the sum of individual columns in an image and draw a plot indicating the number of pixels in each column(A density chart).Here is my code. Please help me further.
CODE:
clc;clear all,close all;
newimage=imread('NEW1.jpg');
count=find(newimage<1);
disp(count);
sum1=sum(newimage');
display(sum1);
OUTPUT:
sum1 =
    Columns 1 through 5
         69646       69446       18233       68154       57611
    Columns 6 through 10
         45726       36549       54894       20902        3878
    Columns 11 through 15
         45726        .......
BUT I WANT MY OUTPUT TO BE AS
 4512(say)[sum for the first column]  4561[for the second column] and so on....
HOW TO GET IT??? PLEASE HELP

Best Answer

The number of pixels in each column of an image is a constant. If you only want to count the number of pixels below a certain value, then:
bar(mean(newimage<TheValue)))
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