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C----------------------------------------------------------------------
subroutine ftgtdm(iunit,colnum,maxdim,naxis,naxes,status)
C parse the TDIMnnn keyword to get the dimensionality of a column
C iunit i fortran unit number to use for reading
C colnum i column number to read
C maxdim i maximum no. of dimensions to read; dimension of naxes
C OUTPUT PARAMETERS:
C naxis i number of axes in the data array
C naxes i array giving the length of each data axis
C status i output error status (0=OK)
C
C written by Wm Pence, HEASARC/GSFC, October 1993
integer iunit,colnum,maxdim,naxis,naxes(*),status
C-------COMMON BLOCK DEFINITIONS:--------------------------------------------
integer nf,nb,ne
parameter (nb = 20)
parameter (nf = 3000)
parameter (ne = 200)
integer bufnum,chdu,hdutyp,maxhdu,hdstrt,hdend,nxthdr,dtstrt
integer nxtfld
logical wrmode
common/ft0001/bufnum(199),chdu(nb),hdutyp(nb),maxhdu(nb),
& wrmode(nb),hdstrt(nb,ne),hdend(nb),nxthdr(nb),dtstrt(nb),nxtfld
integer tfield,tstart,tbcol,rowlen,tdtype,trept,tnull,scount
integer theap,nxheap
double precision tscale,tzero
common/ft0002/tfield(nb),tstart(nb),tbcol(nf),rowlen(nb),
& tdtype(nf),trept(nf),tscale(nf),tzero(nf),tnull(nf),scount(nb)
& ,theap(nb),nxheap(nb)
C-------END OF COMMON BLOCK DEFINITIONS-----------------------------------
integer ibuff,nfound,c1,c2,clast,dimval
logical last
character*120 tdim
if (status .gt. 0)return
C define the number of the buffer used for this file
ibuff=bufnum(iunit)
if (colnum .lt. 1 .or. colnum .gt. tfield(ibuff))then
C illegal column number
status=302
return
end if
nfound=0
C try getting the TDIM keyword value
call ftgkns(iunit,'TDIM',colnum,1,tdim,nfound,status)
if (nfound .ne. 1)then
C no TDIM keyword found
naxis=1
naxes(1)=trept(colnum+tstart(ibuff))
return
end if
naxis=0
C first, find the opening ( and closing )
c1=index(tdim,'(')+1
c2=index(tdim,')')-1
if (c1 .eq. 1 .or. c2 .eq. -1)go to 900
last=.false.
C find first non-blank character
10 if (tdim(c1:c1) .ne. ' ')go to 20
c1=c1+1
go to 10
C find the comma separating the dimension sizes
20 clast=index(tdim(c1:c2),',')+c1-2
if (clast .eq. c1-2)then
last=.true.
clast=c2
end if
C read the string of characters as the (integer) dimension size
call ftc2ii(tdim(c1:clast),dimval,status)
if (status .gt. 0)then
call ftpmsg('Error in FTGTDM parsing dimension string: '
& //tdim)
go to 900
end if
naxis=naxis+1
if (naxis .le. maxdim)naxes(naxis)=dimval
if (last)return
c1=clast+2
go to 10
C could not parse the tdim value
900 status=263
end
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