Matlab Random Distribution Histogram

Question

I am new to Matlab, and I have already looked for a whole bunch of different sites, but I did not find a solution (at least, understandable).

I have a 290x233 matrix with double values ​​from 0.1 to 4.7. I want to generate a histogram from all the data in this matrix, so that there are strips for the range 0.5 → I want to see how many values ​​exist in the range from 0 to 0.5, from 0.5 to 1 and so on ...

So far I have managed to have a strict plan. Using this code:

bins=[0.25:0.5:4.75]; n2=histc(a_dif_1, bins); bar(bins,n2,'hist'); 

I managed to get the result when there is a whole bunch of peaks in each box (see the figure below). This means that it shows me the presence of each individual value within the bin range.

then I found out about the "stacked" option and using

 bins=[0.25:0.5:4.75]; n2=histc(a_dif_1, bins); bar(bins,n2,0.8,'stacked','b'); 

Thus, at least I got big bars showing the total number of events within 1 bin (for this, 10 rectangular bars are shown, shown below).

Right now I'm wondering if bars showing the total number of values ​​in the basket are the right thing to do? In addition, I noticed that my bars, which I’m getting, are leaving the center of the bunker (the bars on the right are not in the middle of two x-ticks) - did I mess up with the bunkers ??

As a bonus, I finally would like to draw a curve on top of the bars. The curve should show the following peaks that I described earlier, very generalized, so I can give more detailed information about the distribution of data separately from the bars.

Thanks for any help or ideas!

UPDATE

THANKS VERY MUCH for the tips. I changed histc to hist

 bins=[0.25:0.5:4.75]; hist(a_dif_1(:), bins) 

... and Matlab gives me exactly what I wanted:

Answer 1

 a = 0.1; b = 4.7; r = a + (ba).*rand(290,233); bins=[0.25:0.5:4.75]; hist(r(:)) hist(r(:),bins) 

this is normal?