Same as evalMag_forPoint except it evaluate magnitude from points via indices which need to be setup before
The interface has to comply to the abstract interface tem_varSys_module#tem_varSys_proc_element.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(tem_varSys_op_type), | intent(in) | :: | fun |
Description of the method to obtain the variables, here some preset values might be stored, like the space time function to use or the required variables. |
||
| type(tem_varSys_type), | intent(in) | :: | varSys |
The variable system to obtain the variable from. |
||
| type(tem_time_type), | intent(in) | :: | time |
Point in time at which to evaluate the variable. |
||
| integer, | intent(in) | :: | iLevel |
Level on which values are requested |
||
| integer, | intent(in) | :: | idx(:) |
Index of points in the growing array and variable val array to return. Size: nVals |
||
| integer, | intent(in), | optional | :: | idxLen(:) |
With idx as start index in contiguous memory, idxLength defines length of each contiguous memory Size: nVals |
|
| integer, | intent(in) | :: | nVals |
Number of values to obtain for this variable (vectorized access). |
||
| real(kind=rk), | intent(out) | :: | res(:) |
Resulting values for the requested variable. Dimension: n requested entries x nComponents of this variable Access: (iElem-1)*fun%nComponents + iComp |
recursive subroutine tem_evalMag_fromIndex( fun, varSys, time, iLevel, idx, &
& idxLen, nVals, res )
! ---------------------------------------------------------------------- !
!> Description of the method to obtain the variables, here some preset
!! values might be stored, like the space time function to use or the
!! required variables.
class(tem_varSys_op_type), intent(in) :: fun
!> The variable system to obtain the variable from.
type(tem_varSys_type), intent(in) :: varSys
!> Point in time at which to evaluate the variable.
type(tem_time_type), intent(in) :: time
!> Level on which values are requested
integer, intent(in) :: iLevel
!> Index of points in the growing array and variable val array to
!! return.
!! Size: nVals
integer, intent(in) :: idx(:)
!> With idx as start index in contiguous memory,
!! idxLength defines length of each contiguous memory
!! Size: nVals
integer, optional, intent(in) :: idxLen(:)
!> Number of values to obtain for this variable (vectorized access).
integer, intent(in) :: nVals
!> Resulting values for the requested variable.
!!
!! Dimension: n requested entries x nComponents of this variable
!! Access: (iElem-1)*fun%nComponents + iComp
real(kind=rk), intent(out) :: res(:)
! ---------------------------------------------------------------------- !
integer :: iVal, depVar_pos, depVar_nComps, offset
real(kind=rk), allocatable :: input_varRes(:)
! ---------------------------------------------------------------------- !
type(tem_varSys_op_data_type), pointer :: opData
! ---------------------------------------------------------------------- !
call C_F_POINTER( fun%method_Data, opData )
call tem_varSys_check_inArgs( fun, varSys, time, iLevel, idx, idxLen, &
& nVals, label = 'evalMag_fromIndex' )
! get the position of dependent variable, assuming only one
depVar_pos = fun%input_varPos(1)
! get the nComp of dependent variable
depVar_nComps = varSys%method%val( depVar_pos )%nComponents
! allocate array to save results
allocate(input_varRes( nVals * depVar_nComps ))
! derive dependent variable
call varSys%method%val(depVar_pos)%get_valOfIndex( &
& varSys = varSys, &
& time = time, &
& iLevel = iLevel, &
& idx = opData%input_pntIndex(1) &
& %indexLvl(iLevel)%val( idx(:) ), &
& nVals = nVals, &
& res = input_varRes(:) )
! compute magnitude
! assuming fun%nComponents = 1
input_varRes = input_varRes * input_varRes
do iVal = 1, nVals
offset = (( ival-1)* depvar_ncomps+0)
res(iVal) = sqrt(sum(input_varRes(offset+1 : offset+depVar_nComps)))
end do
deallocate(input_varRes)
end subroutine tem_evalMag_fromIndex