Reading and plotting an ASCII data file with FORTRAN
The ASCII data files can be read with FORTRAN for further processing.
As mentioned in the ASCII data format
specification, the data file has a number of comment lines, which
need to be skipped when reading the file.
The Fortran-77 sample program
so2ascread_f77.f reads the data
from a single data file into a set of arrays, and issue a few notes
to show that it has read the file.
The header of the sample program specifies how to compile and use it:
!
! Compilation:
!
! FC -o so2ascread_f77 so2ascread_f77.f
!
! where 'FC' is your favourite Fortran-77 compiler.
! (With '.f' as extention, the file can also be
! compiled with a Fortran-90 compiler.)
!
! Usage:
!
! so2ascread_f77 SO2datafile
!
! For example:
!
! so2ascread_f77 so2cd20070321_011537.dat
!
Issuing the latter command (prepending the appropriate path to the filename)
gives the following output to the screen:
--- Reading datafile ...
--- Number of data lines read: 3633
Date and time of first pixel: 20070321 015449.912
last pixel: 20070321 022701.108
The actual reading of the data file is done with a subroutine, so that
it is easy to make the program read multiple data files.
Reading with Fortran-90 is quite similar, though then it is possible to
load the data in one structure, rather than in separate arrays.
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