How to find cumulative distribution function from a given data set(vector)

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Shankul Saini
Shankul Saini 2022-11-24
评论： Shankul Saini 2022-11-24
clc
clear all
rng('default') % For reproducibility
y = evrnd(0,3,100,1);
[a,s]=cdfplot(y);
In this "cdfplot "directly plots the cdf graph, that too is repeats the each number then finds cdf.
But I want the cdf vector.
Can someone help me please?

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Paul
Paul 2022-11-24
Ran in:
Hi Shankul,
I'm not sure what "I want the cdf vector" means. If that means the data that forms the cdf plot on the graph, then the data can be obtained from the XData and YData properties of a:
rng('default') % For reproducibility
y = evrnd(0,3,100,1);
[a,s]=cdfplot(y);
plot(a.XData,a.YData)
If that's not what you want, can the Question be clarified?
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Paul
Paul 2022-11-24
Ran in:
Mabye ecdf is what you're looking for?
rng('default') % For reproducibility
y = evrnd(0,3,100,1);
[a,s]=cdfplot(y);
[f,x]=ecdf(y);
hold on
plot(x,f)
whos x f y
Name Size Bytes Class Attributes f 101x1 808 double x 101x1 808 double y 100x1 800 double
The extra point in x and f is the first where x(1) = x(2) and f(1) = 0;

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