IDL code to Matlab

I am a first time matlab user trying to extract some data of which i have instructions in IDL. please translate the following to the matlab equivalent:

R = Get_kbrd()

precip[where(precip eq missing_value)] = !VALUES.F_NAN

GHA_lon = where(lon ge 30. AND lon le 52.)

nt = n_elements(time),

bplot = BARPLOT,

FILL_COLOUR= avM = fltarr(10000)

 ri = 115*randomu(1234,10000,15)

avM[i] = mean(zGHA[ri[i,*]])

avM = avM[sort(avM)]

p5th = avM[0.05*9999]

p95th = avM[0.95*9999]

splot = PLOT(years15,replicate(p5th,nt-15),thick=3,/OVERPLOT)

[Rik]

Have a read here (or here for more general advice) and here. It will greatly improve your chances of getting an answer.

Learning the tool you're working with is always worth it.