- Updated license
- Update to 5.2.2
* This bugfix release delivers a fix for #147 where a memory
allocation failed beyond 4GB.
- Update to version 5.2.1
* Fixes (gh#johnkerl/miller#142) build segfault on non-x86
architectures
- Update to version 5.2.0
This release contains mostly feature requests.
Features:
* The stats1 verb now lets you use regular expressions to
specify which field names to compute statistics on, and/or which
to group by. Full details are here.
* The min and max DSL functions, and the min/max/percentile
aggregators for the stats1 and merge-fields verbs, now support
numeric as well as string field values. (For mixed string/numeric
fields, numbers compare before strings.) This means in particular
that order statistics -- min, max, and non-interpolated
percentiles -- as well as mode, antimode, and count are now
possible on string-only fields. (Of course, any operations
requiring arithmetic on values, such as computing sums, averages,
or interpolated percentiles, yield an error on string-valued
input.)
* There is a new DSL function mapexcept which returns a copy of
the argument with specified key(s), if any, unset. The motivating
use-case is to split records to multiple filenames depending on
particular field value, which is omitted from the output: mlr
--from f.dat put 'tee > "/tmp/data-".$a, mapexcept($*, "a")'
Likewise, mapselect returns a copy of the argument with only
specified key(s), if any, set. This resolves #137.
* A new -u option for count-distinct allows unlashed counts for
multiple field names. For example, with -f a,b and without -u,
count-distinct computes counts for distinct pairs of a and b field
values. With -f a,b and with -u, it computes counts for distinct a
field values and counts for distinct b field values separately.
* If you build from source, you can now do ./configure without
first doing autoreconf -fiv. This resolves #131.
* The UTF-8 BOM sequence 0xef 0xbb 0xbf is now automatically
ignored from the start of CSV files. (The same is already done for
JSON files.) This resolves #138.
* For put and filter with -S, program literals such as the 6 in
$x = 6 were being parsed as strings. This is not sensible, since
the -S option for put and filter is intended to suppress numeric
conversion of record data, not program literals. To get string 6
one may use $x = "6".
Documentation:
* A new cookbook example shows how to compute differences
between successive queries, e.g. to find out what changed in
time-varying data when you run and rerun a SQL query.
* Another new cookbook example shows how to compute
interquartile ranges.
* A third new cookbook example shows how to compute weighted
means.
Bugfixes:
* CRLF line-endings were not being correctly autodetected when
I/O formats were specified using --c2j et al.
* Integer division by zero was causing a fatal runtime
exception, rather than computing inf or nan as in the
floating-point case.