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!
! Read catalogue
!
!
! Copyright © 2016-20 F.Hroch (hroch@physics.muni.cz)
!
! This file is part of Munipack.
!
! Munipack is free software: you can redistribute it and/or modify
! it under the terms of the GNU General Public License as published by
! the Free Software Foundation, either version 3 of the License, or
! (at your option) any later version.
!
! Munipack is distributed in the hope that it will be useful,
! but WITHOUT ANY WARRANTY; without even the implied warranty of
! MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
! GNU General Public License for more details.
!
! You should have received a copy of the GNU General Public License
! along with Munipack. If not, see <http://www.gnu.org/licenses/>.
!
! * proper motion is omited
module catio
implicit none
integer, parameter, private :: dbl = selected_real_kind(15)
contains
subroutine catalogue(cat,labels,alpha,delta,mag,catid)
use titsio
character(len=*), intent(in) :: cat
character(len=*), dimension(:), intent(in) :: labels
real(dbl), dimension(:), allocatable, intent(out) :: alpha,delta,mag
character(len=*), intent(out) :: catid
real(dbl), parameter :: nullval = 99.99999
integer :: nrows, srows, status, i, l, frow
integer, dimension(size(labels)) :: cols
logical :: anyf
type(fitsfiles) :: fits
status = 0
! open and move to a table extension
call fits_open_table(fits,cat,FITS_READONLY,status)
if( status /= 0 ) then
write(error_unit,*) &
'Error: failed to read a table in the file `',trim(cat),"'."
stop 'CATSIO'
end if
call fits_get_num_rows(fits,nrows,status)
if( status /= 0 ) goto 666
if( nrows == 0 ) stop 'catio: no stars available.'
! define reference frame and identification of catalogue
call fits_read_key(fits,'EXTNAME',catid,status)
if( status == FITS_KEYWORD_NOT_FOUND ) then
catid = ''
status = 0
end if
! find columns by labels
do i = 1, size(labels)
call fits_get_colnum(fits,.true.,labels(i),cols(i),status)
end do
if( status /= 0 ) goto 666
allocate(alpha(nrows),delta(nrows),mag(nrows))
call fits_get_rowsize(fits,srows,status)
do i = 1, nrows, srows
frow = i
l = min(i+srows,nrows)
call fits_read_col(fits,cols(1),frow,nullval,alpha(i:l),anyf,status)
call fits_read_col(fits,cols(3),frow,nullval,delta(i:l),anyf,status)
call fits_read_col(fits,cols(5),frow,nullval,mag(i:l),anyf,status)
if( status /= 0 ) goto 666
end do
call fits_close_file(fits,status)
return
666 continue
call fits_close_file(fits,status)
call fits_report_error(error_unit,status)
if( allocated(mag) ) deallocate(mag,alpha,delta)
stop 'CATSIO'
end subroutine catalogue
end module catio
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