select_row Subroutine

public pure subroutine select_row(n, m, x, nrow)

Uses

  • proc~~select_row~~UsesGraph proc~select_row select_row module~odrpack_kinds odrpack_kinds proc~select_row->module~odrpack_kinds iso_fortran_env iso_fortran_env module~odrpack_kinds->iso_fortran_env

Select the row at which the derivative will be checked.

Arguments

Type IntentOptional Attributes Name
integer, intent(in) :: n

Number of observations.
integer, intent(in) :: m

Number of columns of data in the independent variable.
real(kind=wp), intent(in) :: x(n,m)

Independent variable.
integer, intent(inout) :: nrow

Selected row number of the independent variable.

Called by

proc~~select_row~~CalledByGraph proc~select_row select_row proc~odr odr proc~odr->proc~select_row proc~odr_long_c odr_long_c proc~odr_long_c->proc~odr proc~odr_medium_c odr_medium_c proc~odr_medium_c->proc~odr proc~odr_short_c odr_short_c proc~odr_short_c->proc~odr program~example1 example1 program~example1->proc~odr program~example2 example2 program~example2->proc~odr program~example3 example3 program~example3->proc~odr program~example4 example4 program~example4->proc~odr program~example5 example5 program~example5->proc~odr

Variables

Type Visibility Attributes Name Initial
integer, public :: i

Source Code

   pure subroutine select_row(n, m, x, nrow)
   !! Select the row at which the derivative will be checked.

      use odrpack_kinds, only: zero

      integer, intent(in) :: n
         !! Number of observations.
      integer, intent(in) :: m
         !! Number of columns of data in the independent variable.
      real(wp), intent(in) :: x(n, m)
         !! Independent variable.
      integer, intent(inout) :: nrow
         !! Selected row number of the independent variable.

      ! Local scalars
      integer :: i

      ! Variable Definitions (alphabetically)
      !  I:       An index variable.
      !  J:       An index variable.
      !  M:       The number of columns of data in the independent variable.
      !  N:       The number of observations.
      !  NROW:    The selected row number of the independent variable.
      !  X:       The independent variable.

      if ((nrow >= 1) .and. (nrow <= n)) return

      ! Select first row of independent variables which contains no zeros
      ! if there is one, otherwise first row is used.
      nrow = 1
      do i = 1, n
         if (all(x(i, :) /= zero)) then
            nrow = i
            return
         end if
      end do

   end subroutine select_row