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73 lines
2.1 KiB
Fortran
73 lines
2.1 KiB
Fortran
! This is part of the netCDF package.
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! Copyright 2006 University Corporation for Atmospheric Research/Unidata.
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! See COPYRIGHT file for conditions of use.
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! This is a simple example which reads a small dummy array, from a
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! netCDF data file created by the companion program simple_xy_wr.f90.
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! This is intended to illustrate the use of the netCDF fortran 90
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! API. This example program is part of the netCDF tutorial, which can
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! be found at:
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! http://www.unidata.ucar.edu/software/netcdf/docs/netcdf-tutorial
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! Full documentation of the netCDF Fortran 90 API can be found at:
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! http://www.unidata.ucar.edu/software/netcdf/docs/netcdf-f90
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! $Id: simple_xy_rd.f90,v 1.11 2010/04/06 19:32:09 ed Exp $
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program simple_xy_rd
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use netcdf
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implicit none
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! This is the name of the data file we will read.
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character (len = *), parameter :: FILE_NAME = "simple_xy.nc"
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! We are reading 2D data, a 12 x 6 grid.
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integer, parameter :: NX = 6, NY = 12
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integer, dimension(:,:), allocatable :: data_in
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! This will be the netCDF ID for the file and data variable.
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integer :: ncid, varid
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! Loop indexes, and error handling.
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integer :: x, y
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! Allocate memory for data.
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allocate(data_in(NY, NX))
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! Open the file. NF90_NOWRITE tells netCDF we want read-only access to
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! the file.
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call check( nf90_open(FILE_NAME, NF90_NOWRITE, ncid) )
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! Get the varid of the data variable, based on its name.
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call check( nf90_inq_varid(ncid, "data", varid) )
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! Read the data.
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call check( nf90_get_var(ncid, varid, data_in) )
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! Check the data.
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do x = 1, NX
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do y = 1, NY
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if (data_in(y, x) /= (x - 1) * NY + (y - 1)) then
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print *, "data_in(", y, ", ", x, ") = ", data_in(y, x)
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stop "Stopped"
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end if
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end do
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end do
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! Close the file, freeing all resources.
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call check( nf90_close(ncid) )
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print *,"*** SUCCESS reading example file ", FILE_NAME, "! "
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contains
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subroutine check(status)
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integer, intent ( in) :: status
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if(status /= nf90_noerr) then
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print *, trim(nf90_strerror(status))
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stop 2
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end if
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end subroutine check
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end program simple_xy_rd
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