! FPL - Example 03
!
! Purpose: Masks cattle data according to Minas Gerais State
! FPL datatypes: nc2d_byte_lld, nc3d_double_lld_ti
! FPL tools: readgrid, writegrid, exec_time, setFillValue
!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
! Reads netCDF files, masks data and saves the masked data
! Uses subroutines to calculate runtime
!++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
program main
use fpl
implicit none
!Structure declarations for CATTLE19902012.nc (3d dataset)
!variable type: double
!longitude and latitude type: double
!time type: integer
!Related article and original data download
!Dias, L.C.P., Pimenta, F.M., Santos, A.B., Costa, M.H., Ladle, R.J. (2016).
!Patterns of land use, extensification and intensification of Brazilian agriculture.
!Global Change Biology. doi:10.1111/gcb.13314
!http://onlinelibrary.wiley.com/doi/10.1111/gcb.13314/ful
!Download: http://www.biosfera.dea.ufv.br/en-US/bancos
!Stocking rate of cattle are in heads per hectare (head/ha)
type(nc3d_double_lld_ti) :: cattle
!Structure declarations for brazil_UF.nc (2d dataset)
!variable type: byte
!longitude and latitude datatype: double
!Brazilian UF data
type(nc2d_byte_lld) :: maskara
!Auxiliary variables for time calculation
real*4 :: start_time, end_time
character(200) :: inputpath, outputpath, maskfile
inputpath = "database/CATTLE19902012.nc"
maskfile = "database/brazil_UF.nc"
outputpath = "database/cattle19902012_mask.nc"
cattle%varname = "Cattle"
cattle%timename = "time"
cattle%lonname = "lon"
cattle%latname = "lat"
maskara%varname = "UF"
maskara%lonname = "lon"
maskara%latname = "lat"
write(*,*)"Readind data"
call exec_time(start_time) !Save initial time
call readgrid(maskfile, maskara) !Read estates data
call exec_time(end_time) !Save final time
write(*,'(" Time:", f15.3," seconds")') end_time - start_time !Execution time
write(*,*) "vartype: ", maskara%vartype
write(*,*)"Reading mask"
call exec_time(start_time)
call readgrid(inputpath, cattle) !Read cattle data
call exec_time(end_time)
write(*,'(" Time:", f15.3," seconds")') end_time - start_time
write(*,*) "cattle vartype: ", cattle%vartype
write(*,*)"Setting FillValue"
call exec_time(start_time)
call setFillValue(maskara, cattle, 18) !Masks the cattle data where the state map is equal to 18.
call exec_time(end_time)
write(*,'(" Time:", f15.3," seconds")') end_time - start_time
write(*,*) "Writing data"
call exec_time(start_time)
call writegrid(outputpath, cattle) !Saves the masked data
call exec_time(end_time)
write(*,'(" Time:", f15.3," seconds")') end_time - start_time
end program main
