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dirfile2ascii — output dirfile database vectors as ASCII text


dirfile2ascii [ OPTION ]... DIRFILE [ [ -a | -A | -e | -E | -F | -g | -G | -o | -i | -u |
-x | -X ] FIELD ]...


Fetches data from a dirfile(5) database specified by DIRFILE and writes it as ASCII to
standard output. Any number of vector FIELDs may be specified. Each specified field is
printed in a separate column.

Mandatory arguments to long options are mandatory for short options too.

-d, --delimeter=delim
separate columns by delim. (Default: a single space.)

-f, --first-frame=first_frame-last_frame
read from frame first_frame to frame last_frame (inclusive).

-f, --first-frame=first_frame:nframes
equivalent to --first-frame=first_frame --num-frames=nframes.

-f, --first-frame=first_frame
If first_frame >= 0, start reading at frame first_frame. If first_frame is -1 and
--num-frames=nframes is specified, read the last nframes frames. If --first-frame
is not specified, reading starts at frame zero.

-n, --num-frames=nframes
read at most nframes frames. If not specified, or if nframes = 0, all frames to
the end-of-field are read.

-p, --precision=format
use format to format output. format may contain any of the flag characters, a
field width, and/or a precision as specified in printf(3). It may not contain a
length modifier.

-q, --quiet
don't write diagnostic messages on standard error. (This is the default

-s, --skip=frame_skip
if frame_skip > 0, output only one sample for every frame_skip frames.

-v, --verbose
write diagnostic messages on standard error.

-z, --fill=STRING
Fill columns which go past the end of their corresponding field with the string
STRING. The default behaviour is to fill columns with floating-point conversions
with NaN and columns with integer conversion with 0, which mirrors what occurs when
an attempt is made to print data from before the start of a field. (Note: the
default behaviour cannot be reproduced with this option, since STRING is applied to
all columns, regardless of conversion type.)

In addition to the above, each FIELD argument may be preceded by a short option, one of:
-a, -A, -e, -E, -F, -g, -G, -i, -o, -u, -x, -X, indicating the conversion to be used. See
printf(3) for the meaning of these conversion specifiers. The output flags, width, and
precision may be specified by using --precision. If no conversion specifier is given, %f
is used.

For conversion specifiers %a, %A, %e, %E, %f, %F, %g, %G, data is read from the dirfile as
double precision floats. For conversion specifier %i, data is read as 64-bit signed
integers. For conversion specifiers %o, %u, %x, %X, data is read as 64-bit unsigned


No native support for printing complex data is provided. This may be worked around by
using dirfile(5) representation suffixes. For example, the command

dirfile2ascii DIRFILE FIELD.r FIELD.i

will print the real and imaginary parts of the complex valued field FIELD in the first and
second columns, respectively.

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