libsim Versione 7.1.11

◆ 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
2579ELSE 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

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