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functions in std.i - h
has_records
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has_records(file)
returns 1 if FILE has history records, 0 if it does not.
interpreted function, defined at i0/std.i line 2392
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help
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help, topic
or help
Prints DOCUMENT comment from include file in which the variable
TOPIC was defined, followed by the line number and filename.
By opening the file with a text editor, you may be able to find
out more, especially if no DOCUMENT comment was found.
Examples:
help, set_path
prints the documentation for the set_path function.
help
prints the DOCUMENT comment you are reading.
This copy of Yorick was launched from the directory:
**** Y_LAUNCH (computed at runtime) ****
Yorick's "site directory" at this site is:
**** Y_SITE (computed at runtime) ****
You can find out a great deal more about Yorick by browsing
through these directories. Begin with the site directory,
and pay careful attention to the subdirectories doc/ (which
contains documentation relating to Yorick), and i/ and
contrib/ (which contain many examples of Yorick programs).
Look for files called README (or something similar) in any
of these directories -- they are intended to assist browsers.
The site directory itself contains std.i and graph.i, which
are worth reading.
Type:
help, dbexit
for help on debug mode. If your prompt is "dbug>" instead of
">", dbexit will return you to normal mode.
Type:
quit
to quit Yorick.
builtin function, documented at i0/std.i line 33
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SEE ALSO:
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quit,
info,
print,
copyright,
warranty,
legal
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histogram
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histogram(list)
or histogram(list, weight)
returns an array hist which counts the number of occurrences of each
element of the input index LIST, which must consist of positive
integers (1-origin index values into the result array):
histogram(list)(i) = number of occurrences of i in LIST
A second argument WEIGHT must have the same shape as LIST; the result
will be the sum of WEIGHT:
histogram(list)(i) = sum of all WEIGHT(j) where LIST(j)==i
The result of the single argument call will be of type long; the
result of the two argument call will be of type double (WEIGHT is
promoted to that type). The input argument(s) may have any number
of dimensions; the result is always 1-D.
KEYWORD: top=max_list_value
By default, the length of the result is max(LIST). You may
specify that the result have a larger length by means of the TOP
keyword. (Elements beyond max(LIST) will be 0, of course.)
builtin function, documented at i0/std.i line 943
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SEE ALSO:
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digitize,
sort
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