plot - Matlab: How to show sigma and mu on normal curve -

i plotting normal curve using y = normpdf(x,mu,sigma); in matlab. draws me normal curve. but, need additional information shown on curve, having vertical lines on curve show mu , sigma. similar one:

is there matlab function draw such vertical lines on curve?

thanks, aida

there no built-in function this, can hands:

create normal curve , plot it:

x = -2:0.05:2; mu = 0; sigma = 0.5; y = normpdf(x,mu,sigma); plot(x,y) 

add lines sigmas:

hold on; plot( [mu - sigma mu - sigma],[0 max(y)],'--') plot( [mu + sigma mu + sigma],[0 max(y)],'--') 

you can change sigma need (2sigma 3sigma). how add text? way:

text(0.1,-0.05,'mu + sigma'); 

or if want beautiful:

text(-0.65,-0.05,'\mu - \sigma') 

result: