Re: list the data in the reverse order (corrected)

[<Mick.Spillane@xxxxxxxx>]

On Sun, 6 Feb 2005, Namba Takaya wrote:

> I would like to list the data in the reverse order.
> According to a previous mail, I made it using repeat command like
> repeat/j=1:570
> (list/clobber/order=ij/file=reverse.txt/nohead/format=(343(f7.2,2x))
> sst[i=-227:115,j=`1140-j`])

Hi Namba Takaya,
	I don't know how to do it with a qualifier, but the "sample"
functions provide one of probably several ways to reverse order.

For example:
def axis/x=1:9:2 xax ; def axis/y=2:16:2 yax
def grid/x=xax/y=yax grd
let v=i[g=grd]^2+j[g=grd]
list v
!             SUBSET   : 5 by 8 points (X-Y)
!              1      3      5      7      9
!              1      2      3      4      5
! 2    / 1:   2.00   5.00  10.00  17.00  26.00
! 4    / 2:   3.00   6.00  11.00  18.00  27.00
! 6    / 3:   4.00   7.00  12.00  19.00  28.00
! 8    / 4:   5.00   8.00  13.00  20.00  29.00
! 10   / 5:   6.00   9.00  14.00  21.00  30.00
! 12   / 6:   7.00  10.00  15.00  22.00  31.00
! 14   / 7:   8.00  11.00  16.00  23.00  32.00
! 16   / 8:   9.00  12.00  17.00  24.00  33.00

! Now suppose we want to list the array in reversed j order
! over the range i=2:4, j=7,6,5,4,3.  We could use

list/form=(3f6.1)/nohead/i=2:4 samplej(v,10-j[j=3:7])
!  11.0  16.0  23.0
!  10.0  15.0  22.0
!   9.0  14.0  21.0
!   8.0  13.0  20.0
!   7.0  12.0  19.0


Good luck,
Mick
PS I don't understand the use of the negative "i" index in your
example sst[i=-227:115,j=`1140-j`])