How can I count number of bars in a bar graph?

    figure;
imshow(Image);
pix=impixel(Image,X,Y);
hold on;
plot(X,Y,'LineWidth',2);
figure;
bar(pix,'r');

I have plotted this pix using a bar graph which is a continuous data set. Now how to count the no of bars in this graph and how I will calculate the distances from both the axes to each of the bar?and how to store all these values to an excel file. I am getting many graphs as my folder consisting of 50 images. How to do this?

Answer 1

[Image Analyst]

Try adding this:

numBars = length(xticks)

since for every bar group you'll have a tick mark.

[Zara Khan]

How to get this xticks as I only have pix array and it consists of continuos values means consequtives 0 and 1 ?

[Image Analyst]

Once you've called bar() a plot will be created and then xticks will be there. Just try it and see.

[Zara Khan]

Now how to calculate the distance from both the axes to each bars??

[Image Analyst]

No idea. Why would you even care about that?

[Zara Khan]

I am trying to extract some features from it. But unable to do so till now. Moreover this xticks not working in R2014b.