libsim  Versione 7.1.9

◆ grid_transform_vol7d_grid_init()

subroutine grid_transform_vol7d_grid_init ( type(grid_transform), intent(out)  this,
type(transform_def), intent(in)  trans,
type(vol7d), intent(in)  v7d_in,
type(griddim_def), intent(in)  out,
character(len=*), intent(in), optional  categoryappend 
)

Constructor for a grid_transform object, defining a particular sparse points-to-grid transformation.

It defines an object describing a transformation from a set of sparse points to a rectangular grid; the abstract type of transformation is described in the transformation object trans (type transform_def) which must have been properly initialised. The additional information required here is the list of the input sparse points in the form of a vol7d object (parameter v7d_in), which can be the same volume that will be successively used for interpolation, or a volume with just the same coordinate data, and the description of the output grid griddim (a griddim_def object).

The generated grid_transform object is specific to the sparse point list and grid provided. The function c_e can be used in order to check whether the object has been successfully initialised, if the result is .FALSE., it should not be used further on.

Parametri
[out]thisgrid transformation object
[in]transtransformation object
[in]v7d_invol7d object with the coordinates of the sparse point to be used as input (only information about coordinates is used)
[in]outgriddim object defining target grid
[in]categoryappendappend this suffix to log4fortran namespace category

Definizione alla linea 2564 del file grid_transform_class.F90.

2565  ENDIF
2566  ENDDO
2567  ENDDO
2568 
2569  this%outnx=this%trans%poly%arraysize
2570  this%outny=1
2571  CALL vol7d_alloc(v7d_out, nana=this%outnx)
2572 
2573 ! setup output point list, equal to average of polygon points
2574 ! warning, in case of concave areas points may coincide!
2575  CALL poly_to_coordinates(this%trans%poly, v7d_out)
2576 
2577  this%valid = .true. ! warning, no check of subtype
2578 
2579 ELSE IF (this%trans%trans_type == 'metamorphosis') THEN
2580 
2581 ! common to all metamorphosis subtypes
2582  this%innx = SIZE(v7d_in%ana)
2583  this%inny = 1
2584 ! allocate index array
2585  ALLOCATE(this%point_index(this%innx,this%inny))
2586  this%point_index(:,:) = imiss
2587 
2588  IF (this%trans%sub_type == 'all' ) THEN
2589 
2590  CALL metamorphosis_all_setup()
2591 
2592  ELSE IF (this%trans%sub_type == 'coordbb' ) THEN
2593 
2594  ALLOCATE(lon(this%innx),lat(this%innx))
2595 
2596 ! count and mark points falling into requested bounding-box
2597  this%outnx = 0
2598  this%outny = 1
2599  CALL getval(v7d_in%ana(:)%coord,lon=lon,lat=lat)
2600  DO i = 1, this%innx
2601 ! IF (geo_coord_inside_rectang()
2602  IF (lon(i) > this%trans%rect_coo%ilon .AND. &
2603  lon(i) < this%trans%rect_coo%flon .AND. &
2604  lat(i) > this%trans%rect_coo%ilat .AND. &
2605  lat(i) < this%trans%rect_coo%flat) THEN ! improve!
2606  this%outnx = this%outnx + 1
2607  this%point_index(i,1) = this%outnx
2608  ENDIF
2609  ENDDO
2610 
2611  IF (this%outnx <= 0) THEN
2612  CALL l4f_category_log(this%category,l4f_warn, &
2613  "metamorphosis:coordbb: no points inside bounding box "//&
2614  trim(to_char(this%trans%rect_coo%ilon))//","// &
2615  trim(to_char(this%trans%rect_coo%flon))//","// &
2616  trim(to_char(this%trans%rect_coo%ilat))//","// &
2617  trim(to_char(this%trans%rect_coo%flat)))
2618  ENDIF
2619 
2620  CALL vol7d_alloc(v7d_out, nana=this%outnx)
2621 
2622 ! collect coordinates of points falling into requested bounding-box
2623  n = 0
2624  DO i = 1, this%innx
2625  IF (c_e(this%point_index(i,1))) THEN
2626  n = n + 1
2627  CALL init(v7d_out%ana(n),lon=lon(i),lat=lat(i))
2628  ENDIF
2629  ENDDO
2630  DEALLOCATE(lon, lat)
2631 
2632  this%valid = .true.
2633 
2634  ELSE IF (this%trans%sub_type == 'poly' ) THEN
2635 
2636 ! count and mark points falling into requested polygon
2637  this%outnx = 0
2638  this%outny = 1
2639  DO i = 1, this%innx
2640 ! temporary, improve!!!!
2641  CALL getval(v7d_in%ana(i)%coord,lon=lon1,lat=lat1)
2642  point = georef_coord_new(x=lon1, y=lat1)
2643  DO n = 1, this%trans%poly%arraysize
2644  IF (inside(point, this%trans%poly%array(n))) THEN ! stop at the first matching polygon
2645  this%outnx = this%outnx + 1
2646  this%point_index(i,1) = n
2647  EXIT
2648  ENDIF
2649  ENDDO
2650 ! CALL delete(point) ! speedup
2651  ENDDO
2652 
2653  IF (this%outnx <= 0) THEN

Generated with Doxygen.