MATLAB Answers

## How do I sample a random value from a normal distribution

Asked by Gumps

### Gumps (view profile)

on 17 Apr 2019
Latest activity Commented on by Walter Roberson

### Walter Roberson (view profile)

on 18 Apr 2019
I want to sample a value from a normal distribution and I wrote down this codes. Can someone please look at it and hint me if it is appropriate. I am Matlab basic user.
r=rand;
ci_l=find(cumu<=r,1,'last');
ci_h=find(cumu>=r,1,'first');
if abs(cumu(ci_l)-r)<=abs(cumu(ci_h)-r)
ci=ci_l;
else
ci=ci_h;
end
cmuO=getCDF(pdfY);
cmuO=cmuO/max(cmuO);
[~,idx]=min(abs(cmuO-cumu(ci)));
newVal=pdfX(idx);

Walter Roberson

### Walter Roberson (view profile)

on 17 Apr 2019
Is Cumu a distribution created with makedist() https://www.mathworks.com/help/stats/makedist.html or is it a vector of values ? If it is a vector, is the vector sorted in increasing order?
Gumps

### Gumps (view profile)

on 17 Apr 2019
Cumu was created somewhat with code related with makedist().
YES
Walter Roberson

### Walter Roberson (view profile)

on 18 Apr 2019
Is the "YES" intended to mean that Yes, it is a vector sorted in increasing order?

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## 1 Answer

### James Tursa (view profile)

Answer by James Tursa

### James Tursa (view profile)

on 17 Apr 2019

doc randn

#### 0 Comments

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