tsdb – Terribly-Simple Data Base for Time Series

0.1-0

Thu, 24 Nov 2016 00:00:00 +0100

Initial version of package.

0.2-0

Mon, 5 Dec 2016 00:00:00 +0100

'read_ts_tables' can now read several columns from files.
New method 'as.zoo.ts_table' added.
Tutorial added (see file README.org).

0.2-1

Fri, 9 Dec 2016 00:00:00 +0100

A Tutorial is now installed with the package. It can be accessed via browseURL(system.file("Tutorial/README.html", package = "tsdb")) browseURL(system.file("Tutorial/README.pdf", package = "tsdb"))

0.3-0

Sat, 10 Dec 2016 00:00:00 +0100

'write_ts_table' has a new argument 'add': If TRUE, only new data are added to a file, and existing data are kept.

0.4-1

Mon, 6 Feb 2017 00:00:00 +0100

'read_ts_tables' has a new argument 'column.name', which specifies the format of column names in results
there is a public repository at https://gitlab.com/enricoschumann/tsdb

0.5-0

Tue, 24 Oct 2017 00:00:00 +0200

fixed: 'write_ts_table' does now also write empty files
write_ts_table: first argument has been renamed 'ts'
new function 'file_info'
read_ts_tables: rename argument 'column.name' to 'column.names' (plural)
new ts_table method for as.matrix

0.6-0

Thu, 21 Mar 2019 00:00:00 +0100

fixed: 'write_ts_table' with option 'add' would not rewrite (i.e. delete) data before 1 Jan 1970
write_ts_table: new argument 'replace.file'
write_ts_table: scientific notation is no longer suppressed, i.e. numbers may now be written as e.g. 1e10
read_ts_tables: new arguments 'read.fn' and 'frequency'
read_ts_tables: 'return.class' may also be 'ts_table'
function 'ttime' is now exported
there are public repositories at https://github.com/enricoschumann/tsdb and https://gitlab.com/enricoschumann/tsdb

0.6-1

Tue, 26 Mar 2019 00:00:00 +0100

various documentation updates
the "Tutorial" PDF has been removed, but its content may be found at https://gitlab.com/enricoschumann/tsdb/README.org and https://github.com/enricoschumann/tsdb/README.org

0.6-3

Sun, 31 Mar 2019 00:00:00 +0100

read_ts_tables: fixed -- column names are no longer changed when series are read (before, column names were by mistake changed into `syntactically valid names'; e.g., spaces in names were substituted by dots '.')
CRAN release; no user-visible changes

0.7-0

Tue, 27 Aug 2019 00:00:00 +0200

'read_ts_tables': fixed -- when 'end' was missing, the function had ignored 'drop.weekends'
'read_ts_tables': the default value for 'drop.weekends' has changed from TRUE to FALSE
'read_ts_tables' gains an argument 'timestamp': if specified, only data at the times in 'timestamp' are selected
'ts_table' now allows construction of an empty ts_table with defined columns: ts_table(columns = c("A", "B"))
the (very limited and experimental) support for 'MonetDBLite' has been removed (as that package is unfortunately no longer on CRAN)
a script with some timing tests is available at https://github.com/enricoschumann/tsdb/blob/master/inst/tests/write_read.R and https://gitlab.com/enricoschumann/tsdb/blob/master/inst/tests/write_read.R If the package is installed, the file may also be found with system.file("tests/write_read.R", package = "tsdb")

0.7-1

Wed, 28 Aug 2019 00:00:00 +0200

CRAN release; no user-visible changes

0.7-2

Tue, 12 Nov 2019 00:00:00 +0100

'read_ts_tables': fixed -- for a single series, weekends were never dropped

0.7-3

Tue, 25 Aug 2020 00:00:00 +0200

'read_ts_tables': fixed -- when 'column.names' did not contain a placeholder such as %file%, it would be ignored or lead to an error

0.7-4

Wed, 26 Aug 2020 00:00:00 +0200

CRAN release; no user-visible changes

1.0-0

Thu, 31 Dec 2020 00:00:00 +0100

small documentation updates

1.1-0

Mon, 20 Feb 2023 00:00:00 +0100

'read_ts_tables': argument "frequency" can now be NA, in which case the function will first gather possible timestamps from the files to be read. Useful for irregular time-series.
minor documentation updates

1.2-0

'read_ts_tables': new argument "na.rm", that determines whether NAs are removed when more than one series is fetched
'read_ts_tables': fixed -- return.class "ts_table" now works as documented
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