libsim Versione 8.0.0

◆ 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 2626 del file grid_transform_class.F90.

2627 point = georef_coord_new(x=lon1, y=lat1)
2628
2629 DO n = 1, this%trans%poly%arraysize
2630 IF (inside(point, this%trans%poly%array(n))) THEN ! stop at the first matching polygon
2631 this%inter_index_x(i,1) = n
2632 EXIT
2633 ENDIF
2634 ENDDO
2635 ENDDO
2636
2637 this%outnx=this%trans%poly%arraysize
2638 this%outny=1
2639 CALL vol7d_alloc(v7d_out, nana=this%outnx)
2640
2641! setup output point list, equal to average of polygon points
2642! warning, in case of concave areas points may coincide!
2643 CALL poly_to_coordinates(this%trans%poly, v7d_out)
2644
2645 this%valid = .true. ! warning, no check of subtype
2646
2647ELSE IF (this%trans%trans_type == 'metamorphosis') THEN
2648
2649! common to all metamorphosis subtypes
2650 this%innx = SIZE(v7d_in%ana)
2651 this%inny = 1
2652! allocate index array
2653 ALLOCATE(this%point_index(this%innx,this%inny))
2654 this%point_index(:,:) = imiss
2655
2656 IF (this%trans%sub_type == 'all' ) THEN
2657
2658 CALL metamorphosis_all_setup()
2659
2660 ELSE IF (this%trans%sub_type == 'coordbb' ) THEN
2661
2662 ALLOCATE(lon(this%innx),lat(this%innx))
2663
2664! count and mark points falling into requested bounding-box
2665 this%outnx = 0
2666 this%outny = 1
2667 CALL getval(v7d_in%ana(:)%coord,lon=lon,lat=lat)
2668 DO i = 1, this%innx
2669! IF (geo_coord_inside_rectang()
2670 IF (lon(i) > this%trans%rect_coo%ilon .AND. &
2671 lon(i) < this%trans%rect_coo%flon .AND. &
2672 lat(i) > this%trans%rect_coo%ilat .AND. &
2673 lat(i) < this%trans%rect_coo%flat) THEN ! improve!
2674 this%outnx = this%outnx + 1
2675 this%point_index(i,1) = this%outnx
2676 ENDIF
2677 ENDDO
2678
2679 IF (this%outnx <= 0) THEN
2680 CALL l4f_category_log(this%category,l4f_warn, &
2681 "metamorphosis:coordbb: no points inside bounding box "//&
2682 trim(to_char(this%trans%rect_coo%ilon))//","// &
2683 trim(to_char(this%trans%rect_coo%flon))//","// &
2684 trim(to_char(this%trans%rect_coo%ilat))//","// &
2685 trim(to_char(this%trans%rect_coo%flat)))
2686 ENDIF
2687
2688 CALL vol7d_alloc(v7d_out, nana=this%outnx)
2689
2690! collect coordinates of points falling into requested bounding-box
2691 n = 0
2692 DO i = 1, this%innx
2693 IF (c_e(this%point_index(i,1))) THEN
2694 n = n + 1
2695 CALL init(v7d_out%ana(n),lon=lon(i),lat=lat(i))
2696 ENDIF
2697 ENDDO
2698 DEALLOCATE(lon, lat)
2699
2700 this%valid = .true.
2701
2702 ELSE IF (this%trans%sub_type == 'poly' ) THEN
2703
2704! count and mark points falling into requested polygon
2705 this%outnx = 0
2706 this%outny = 1
2707 DO i = 1, this%innx
2708! temporary, improve!!!!
2709 CALL getval(v7d_in%ana(i)%coord,lon=lon1,lat=lat1)
2710 point = georef_coord_new(x=lon1, y=lat1)
2711 DO n = 1, this%trans%poly%arraysize
2712 IF (inside(point, this%trans%poly%array(n))) THEN ! stop at the first matching polygon
2713 this%outnx = this%outnx + 1
2714 this%point_index(i,1) = n
2715 EXIT

Generated with Doxygen.