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Diffstat (limited to 'pkg/tbtables/fitsio/ftpcnb.f')
| -rw-r--r-- | pkg/tbtables/fitsio/ftpcnb.f | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/pkg/tbtables/fitsio/ftpcnb.f b/pkg/tbtables/fitsio/ftpcnb.f new file mode 100644 index 00000000..89c965da --- /dev/null +++ b/pkg/tbtables/fitsio/ftpcnb.f @@ -0,0 +1,96 @@ +C---------------------------------------------------------------------- + subroutine ftpcnb(ounit,colnum,frow,felem,nelem,array,nulval, + & status) + +C write array of character*1 (byte) pixels to the specified column +C of a table. Any input pixels equal to the value of NULVAL will +C be replaced by the appropriate null value in the output FITS file. + +C ounit i fortran unit number +C colnum i number of the column to write to +C frow i first row to write +C felem i first element within the row to write +C nelem i number of elements to write +C array c*1 array of data values to be written +C nulval c*1 pixel value used to represent an undefine pixel +C status i output error status +C +C written by Wm Pence, HEASARC/GSFC, June 1994 + + integer ounit,colnum,frow,felem,nelem,status + character*1 array(*),nulval + +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,repeat,first,ngood,nbad,i,fstelm,fstrow + + if (status .gt. 0)return + + ibuff=bufnum(ounit) + +C get the column repeat count and calculate the absolute position within +C the column of the first element to be written + repeat=trept(colnum+tstart(ibuff)) + first=(frow-1)*repeat+felem-1 + + ngood=0 + nbad=0 + do 10 i=1,nelem + if (array(i) .ne. nulval)then + ngood=ngood+1 + if (nbad .gt. 0)then +C write the previous consecutive set of null pixels + fstelm=i-nbad+first +C calculate the row and element of the first pixel to write + fstrow=(fstelm-1)/repeat+1 + fstelm=fstelm-(fstrow-1)*repeat + call ftpclu(ounit,colnum,fstrow,fstelm,nbad,status) + nbad=0 + end if + else + nbad=nbad+1 + if (ngood .gt. 0)then +C write the previous consecutive set of good pixels + fstelm=i-ngood+first +C calculate the row and element of the first pixel to write + fstrow=(fstelm-1)/repeat+1 + fstelm=fstelm-(fstrow-1)*repeat + call ftpclb(ounit,colnum,fstrow,fstelm,ngood, + & array(i-ngood),status) + ngood=0 + end if + end if +10 continue + +C finished; now just write the last set of pixels + if (nbad .gt. 0)then +C write the consecutive set of null pixels + fstelm=i-nbad+first + fstrow=(fstelm-1)/repeat+1 + fstelm=fstelm-(fstrow-1)*repeat + call ftpclu(ounit,colnum,fstrow,fstelm,nbad,status) + else +C write the consecutive set of good pixels + fstelm=i-ngood+first + fstrow=(fstelm-1)/repeat+1 + fstelm=fstelm-(fstrow-1)*repeat + call ftpclb(ounit,colnum,fstrow,fstelm,ngood, + & array(i-ngood),status) + end if + end |