Monte Carlo Simulation using normal random sampling (Gaussian distribution)

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anna diederichs 2018-7-24

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https://ww2.mathworks.cn/matlabcentral/answers/411944-monte-carlo-simulation-using-normal-random-sampling-gaussian-distribution

评论： Jeff Miller 2018-7-25

Hello. I am trying to run a Monte Carlo simulation on my data. I have a loop running to calculate the data points, each with an associated error. For the Monte Carlo simulation, I want to plot a histogram that shows normal distribution (not random) with a mean of 60 and show 1 standard deviation. I want the Monte Carlo simulation to run 1000 times (r). I am having trouble integrating normrnd into my Monte Carlo loop. Below is my code using rand instead of normrnd. How do I do this with a Gaussian distribution, not just random? Thank you very much in advance.

%code:
xmax=x+xerror;
ymin=y-yerror;
ymax=y+yerror;
zmin=z-zerror;
zmax=z+zerror;
r=1000;
disp_x=xmin+(xmax-xmin).*(rand(r,1));
disp_y=ymin+(ymax-ymin).*(rand(r,1));
disp_z=zmin+(zmax-zmin).*(rand(r,1));
**calculation of 'dip' from my imported data using disp_x, disp_y and disp_z **
hist(dip,50)

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Jeff Miller 2018-7-25

It is not really clear what you are trying to do or why you are having trouble integrating normrnd. For starters, please say why this does not give what you want:

disp_x = normrnd(60,1,r,1);

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