libsim Versione 7.2.6

◆ 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 )
private

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 2601 del file grid_transform_class.F90.

2602 point = georef_coord_new(x=lon1, y=lat1)
2603
2604 DO n = 1, this%trans%poly%arraysize
2605 IF (inside(point, this%trans%poly%array(n))) THEN ! stop at the first matching polygon
2606 this%inter_index_x(i,1) = n
2607 EXIT
2608 ENDIF
2609 ENDDO
2610 ENDDO
2611
2612 this%outnx=this%trans%poly%arraysize
2613 this%outny=1
2614 CALL vol7d_alloc(v7d_out, nana=this%outnx)
2615
2616! setup output point list, equal to average of polygon points
2617! warning, in case of concave areas points may coincide!
2618 CALL poly_to_coordinates(this%trans%poly, v7d_out)
2619
2620 this%valid = .true. ! warning, no check of subtype
2621
2622ELSE IF (this%trans%trans_type == 'metamorphosis') THEN
2623
2624! common to all metamorphosis subtypes
2625 this%innx = SIZE(v7d_in%ana)
2626 this%inny = 1
2627! allocate index array
2628 ALLOCATE(this%point_index(this%innx,this%inny))
2629 this%point_index(:,:) = imiss
2630
2631 IF (this%trans%sub_type == 'all' ) THEN
2632
2633 CALL metamorphosis_all_setup()
2634
2635 ELSE IF (this%trans%sub_type == 'coordbb' ) THEN
2636
2637 ALLOCATE(lon(this%innx),lat(this%innx))
2638
2639! count and mark points falling into requested bounding-box
2640 this%outnx = 0
2641 this%outny = 1
2642 CALL getval(v7d_in%ana(:)%coord,lon=lon,lat=lat)
2643 DO i = 1, this%innx
2644! IF (geo_coord_inside_rectang()
2645 IF (lon(i) > this%trans%rect_coo%ilon .AND. &
2646 lon(i) < this%trans%rect_coo%flon .AND. &
2647 lat(i) > this%trans%rect_coo%ilat .AND. &
2648 lat(i) < this%trans%rect_coo%flat) THEN ! improve!
2649 this%outnx = this%outnx + 1
2650 this%point_index(i,1) = this%outnx
2651 ENDIF
2652 ENDDO
2653
2654 IF (this%outnx <= 0) THEN
2655 CALL l4f_category_log(this%category,l4f_warn, &
2656 "metamorphosis:coordbb: no points inside bounding box "//&
2657 trim(to_char(this%trans%rect_coo%ilon))//","// &
2658 trim(to_char(this%trans%rect_coo%flon))//","// &
2659 trim(to_char(this%trans%rect_coo%ilat))//","// &
2660 trim(to_char(this%trans%rect_coo%flat)))
2661 ENDIF
2662
2663 CALL vol7d_alloc(v7d_out, nana=this%outnx)
2664
2665! collect coordinates of points falling into requested bounding-box
2666 n = 0
2667 DO i = 1, this%innx
2668 IF (c_e(this%point_index(i,1))) THEN
2669 n = n + 1
2670 CALL init(v7d_out%ana(n),lon=lon(i),lat=lat(i))
2671 ENDIF
2672 ENDDO
2673 DEALLOCATE(lon, lat)
2674
2675 this%valid = .true.
2676
2677 ELSE IF (this%trans%sub_type == 'poly' ) THEN
2678
2679! count and mark points falling into requested polygon
2680 this%outnx = 0
2681 this%outny = 1
2682 DO i = 1, this%innx
2683! temporary, improve!!!!
2684 CALL getval(v7d_in%ana(i)%coord,lon=lon1,lat=lat1)
2685 point = georef_coord_new(x=lon1, y=lat1)
2686 DO n = 1, this%trans%poly%arraysize
2687 IF (inside(point, this%trans%poly%array(n))) THEN ! stop at the first matching polygon
2688 this%outnx = this%outnx + 1
2689 this%point_index(i,1) = n
2690 EXIT

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