SELECTION procedure in FORTRAN

[ashotk]

Hi falks,

In fortran code I met the procedure SELECTION which I gues is related to Numerical Recipes (The code has such comment "C From Numerical Recipes - find obs. ranked PCT in array TEMPN:") and looks like this -

WCTF=SELECTION(PCT,N,TEMPN)
WCTF - REAL*8
PCT - INTEGER
N - INTEGER
TEMPN - array of REAL*8 (REAL*8 TEMPN(N))

Do you have any assumptions?

Thanks in advance

 

[xwb]

If it is the routine I think it is, it selects the PCT largest item in the array TEMPN. It is in chapter 8.3

 

[ashotk]

Thanks for quick replay. As I understand this routine returns the PCT-th maximum in array. For example if I have an array {2,6,1,9} then SELECTION(2,4,array) will return 6?.

By the way, which is the name of that book (any links please).

Thanks

 

[IDS]

ashotk - did you try searching for "numerical recipes"?

http://www.nrbook.com/a/bookfpdf/f8-5.pdf

Doug Jenkins
Interactive Design Services

http://newtonexcelbach.wordpress.com/