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pkgsrc/databases/jdb/DESCR

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Update jdb to 1.12 plus the patch for the problem with trailing spaces in dbstats from Heidemann's web page. Changes since 1.7 apart from bugfixes: 1.12, 30-Oct-02 - NEW: dbcolmultiscale - NEW: dbcol has -r option for "relaxed error checking" - NEW: dbcolneaten has new -e option to strip end-of-line spaces - NEW: dbrow finally has a -v option to negate the test - NEW: db_to_html_table: simple conversion to html tables - NEW: dblib now has a function dblib_text2html() that will 1.11, 2-Nov-01 - NEW: dbcolneaten now supports "field specifiers" that allow some control over how wide columns should be - OPTIMIZATION: dbsort now tries hard to be filesystem cache-friendly 1.10, 10-Apr-01 - NEW: dbstats now includes a -S option to optimize work on pre-sorted data (inspired by code contributed by Haobo Yu) 1.9, 6-Nov-00 - NEW: dbfilesplit, split a single input file into multiple output files. 1.8, 28-Jun-00 - NEW: dbrowuniq now optionally checks for uniqueness only on certain fields - NEW: dbrowsplituniq makes one pass through a file and splits it into separate files based on the given fields - NEW: converter for "crl" format network traces - NEW: anywhere you use arbitrary code (like dbroweval), _last_foo now maps to the last row's value for field _foo. - OPTIMIZATION: comment processing slightly changed so that dbmultistats now is much faster on files with lots of comments.
2003-12-15 21:18:33 +01:00
JDB is package of commands for manipulating flat-ASCII databases from
shell scripts. JDB is useful to process medium amounts of data (with
very little data you'd do it by hand, with megabytes you might want a
real database). JDB is very good at doing things like:
Initial import of John Heidemann's JDB flat-ASCII database manipulation package.
1999-05-17 18:58:30 +02:00
Update jdb to 1.12 plus the patch for the problem with trailing spaces in dbstats from Heidemann's web page. Changes since 1.7 apart from bugfixes: 1.12, 30-Oct-02 - NEW: dbcolmultiscale - NEW: dbcol has -r option for "relaxed error checking" - NEW: dbcolneaten has new -e option to strip end-of-line spaces - NEW: dbrow finally has a -v option to negate the test - NEW: db_to_html_table: simple conversion to html tables - NEW: dblib now has a function dblib_text2html() that will 1.11, 2-Nov-01 - NEW: dbcolneaten now supports "field specifiers" that allow some control over how wide columns should be - OPTIMIZATION: dbsort now tries hard to be filesystem cache-friendly 1.10, 10-Apr-01 - NEW: dbstats now includes a -S option to optimize work on pre-sorted data (inspired by code contributed by Haobo Yu) 1.9, 6-Nov-00 - NEW: dbfilesplit, split a single input file into multiple output files. 1.8, 28-Jun-00 - NEW: dbrowuniq now optionally checks for uniqueness only on certain fields - NEW: dbrowsplituniq makes one pass through a file and splits it into separate files based on the given fields - NEW: converter for "crl" format network traces - NEW: anywhere you use arbitrary code (like dbroweval), _last_foo now maps to the last row's value for field _foo. - OPTIMIZATION: comment processing slightly changed so that dbmultistats now is much faster on files with lots of comments.
2003-12-15 21:18:33 +01:00
- extracting measurements from experimental output
- re-examining data to address different hypotheses
- joining data from different experiments
- eliminating/detecting outliers
- computing statistics on data (mean, confidence intervals,
correlations, histograms)
- reformatting data for graphing programs
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