There is a function called hist(), but if I want to plot a graph without using hist() command, how to plot a graph? I means using command to do the job same as hist().
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It depends on how you want to bin your data and what kind of data you have.
The idea of hist function is similar to stacks of coins: Let's say you have a bag of coins and after you separate them by values and stack on one another, you will get different heights. The hist function does the same.
data=[1 3 5 7 4 8 0 1 3];
If you want to distribute your data into 10 bins, you would create a new array of size 10:
histArray=zeros(1,10); % prealocate x=0:1:9; then, you would run a forloop to count how many times you encounter in a particular value:
for n=1:length(data) histArray(1,data(n)+1)=histArray(1,data(n)+1)+1; % every time you meet the particular value, you add 1 into to corresponding bin end bar(histArray)
There could be another case. Let's say you want to distribute your data into 5 bins only (0 and 1 go in the 1st bin, 2 and 3 go in the 2nd...). In this case, you would run the same loop but with more complicated conditioning:
histArray=zeros(1,5); %prealocate x=0:2:8 % create bin numbers for plot for n=1:length(data) histArray(1,floor(data(n)/2)+1)=histArray(1,floor(data(n)/2)+1)+1; % every time you meet the particular value %you add 1 into to corresponding bin end bar(x,histArray)
You can design your own hist function to fit you needs