tsv-summarize bug fixes

tsv-summarize

• Newest operators were not hooked up correctly to command line args.
• Correction to bash-completion

tsv-summarize: Missing field support

Two enhancements:

• tsv-summarize: Missing value support. New command line options to either exclude or replace empty fields. This is a common pattern in some data sets. Also, some new operators related to missing values.
• Bash-completion: Definitions enabling command option completion in bash shells. Needs to be manually installed. Details in the Tips & Tricks document.

Improved numeric printing in tsv-summarize

Fixed some edge cases where printing was being done using exponential notation where not intended.

tsv-summarize: numeric formating; Doc updates

• tsv-summarize: Improved formatting of numeric values, especially when using the --p|float-precision option.
• Reorganization of the documentation.

tsv-sample: Weighted reservoir sampling

New tool, tsv-sample, does sampling and randomization of data file lines. Both uniform and weighted random sampling is supported. Weighted sampling gets weights from a field in the input data. Implemented using reservoir sampling.

Copyright notice updates for 2017

v1.0.12

Copyright notice date updates. (#18)

tsv-filter and tsv-summarize updates

• tsv-filter: New tests --is-numeric, --is-finite, --is-nan, is-infinity. These are useful to ensure a numeric test like --gt (greater than) are run only on field values with validly formatted numbers.
• tsv-summarize: Take advantage the faster topN in DMD/Phobos version 2.073.

First release of tsv-append

tsv-append concatenates multiple TSV files, similar to the Unix cat utility. It is header aware, writing the header from only the first file. It also supports source tracking, adding a column indicating the original file to each row.

Concatenation with header support is useful when preparing data for traditional Unix utilities like sort and sed or applications that read a single file.

Source tracking is useful when creating long/narrow form tabular data. This format is used by many statistics and data mining packages.

Better command options: --help/help-verbose; --H|header

Minor improvements to command line arguments:

• Use --help/help-verbose rather than --help/help-brief. The short version (-h | --help) is generally more useful than the long form.
• Add -H as a short form of --header

Fix DUB build error

Fix DUB build error. Add common directory to tsv-filter build. Fix DM…

…D warning. (#10)