If you specify an output file on the command line, it stores the
information that is displayed on the screen during processing. The
file latlon.sum was specified as the output file in the example
above.
Here is latlon.sum:
Input file : latlon.dat Requested precision = 3, Approximate number of sorting bins = 100 Input data format (latlon.fmt) ASCII_input_data "ASCII format" The format contains 2 variables; length is 24. Output data format (latlon.fmt) binary_output_data "binary format" The format contains 2 variables; length is 16. Histogram data precision: 3, Number of sorting bins: 20 latitude: 20 values read minimum: -83.223548 found at record 5 maximum: 77.883119 found at record 12 Summary file: latitude.lst Histogram data precision: 3, Number of sorting bins: 20 longitude: 20 values read minimum: -176.161101 found at record 1 maximum: 149.408117 found at record 4 Summary file: longitude.lst.
The processing summary file latlon.sum first shows the name of
the input data file (latlon.dat). If you specified precision and
a maximum number of bins on the command line, those values are given
as Requested precision, in this case 3, and Approximate number of
sorting bins, in this case the default value of 100. If precision is
not specified, No requested precision is shown.
A summary of each format shows the type of format (in this case, Input
data format and Output data format) and the name of the format file
containing the format descriptions (latlon.fmt), whether
specified on the command line or located through the default search
sequence (as detailed in chapter 4). In this case, it was located by
default. Since checkvar only needs an input format description,
it ignores output format descriptions. Next, you see the format
descriptor as resolved by FreeForm ND (e.g., ASCII_input_data)
and the format title (e.g., "ASCII format"). Then the number of
variables in a record and total record length are given; for ASCII,
record length includes the end-of-line character (1 byte for Unix).
A section for each variable processed by checkvar indicates the
histogram precision and actual number of sorting bins. Under some
circumstances, the precision of values in the histogram file may be
different than the precision you specified on the command line. The
default value for precision, if none is specified on the command line,
is the precision specified in the relevant format description file or
5, whichever is smaller. The second line shows the name of the
variable (latitude, longitude) and the number of values in the data
file for the variable (20 for both latitude and longitude).
The minimum and maximum values for the variable are shown next
(-83.223548 is the minimum and 77.883119 is the maximum value for
latitude). The maximum and minimum values are given here with a
precision of 6, which is the precision specified in the format
description file. The locations of the maximum and minimum values in
the input file are indicated. (-83.223548 is the fifth latitude value
in latlon.dat and 77.883119 is the twelfth). Finally, the name
of the histogram data (or variable summary) file generated for each
variable is given (latitude.lst and longitude.lst).