Upstream changes:
Changes in Version 1.7-14
o Several convenience interfaces to read.zoo() have been added:
read.table.zoo(), read.csv.zoo(), read.csv2.zoo(), read.delim.zoo(),
read.delim2.zoo(). All of these first call the corresponding read.*()
function to read the data from a text file (with the respective default
settings) and subsequently call read.zoo() to turn the data into
a zoo series.
o na.approx.default() did not properly process the "maxgap" argument
if y did not contain any NAs but NAs were only created implicitly
by xout being different from x (pointed out by Stefan Metzger).
A suitable fix has been added that merges x and xout first.
o aggregate.zoo() and rollapply.zoo() gained the argument coredata=TRUE
which can control whether only the coredata is passed to each subset
(previous behavior) or the full zoo series.
o The "its" package has been archived on CRAN and hence removed from
the list of zoo's suggested packages. However, various methods for
objects of class "its" continue to be available in zoo in case someone
still uses the legacy code.
Upstream changes:
Changes in Version 1.7-13
o The window() method erroneously dropped the dimension in case of
1-column zoo series. Fixed now.
o Bug fix in NA handling of rollmax() pointed out by Cory Fletcher.
o A few as.yearmon/as.yearqtr methods were not registered in
the NAMESPACE but are now.
o If there are less then two non-NAs in na.approx() then approx()
cannot be applied. Instead of throwing an error (as up to version
1.7-12) simply no NAs are replaced now.
o Bug fix for lag(z, k = k, na.pad = TRUE) which ignored na.pad = TRUE
if 'k' was a vector of lags.
Upstream changes:
Changes in Version 1.7-12
o read.zoo with a data.frame argument now defaults to FUN = identity
if the index.column is not character or factor. See ?read.zoo for
additional details.
o Added a dim<- method that checks whether the new dimension value
appears to be ok and then calls the default.
o The index<- and time<- methods now enforce that the new time index
is actually correctly ordered (suggested by Joshua Ulrich).
o read.zoo() heuristic improved so that POSIXct rather than Date is
detected in cases like: read.zoo(text = "2010-01-01 12:05:03 88.1",
index = 1:2).
o The fortify() method now has a col.names argument that allows to set
(some of) the column names of the resulting data.frame.
o Various small bug fixes and enhancements.
Update LICENSE
Upstream changes:
Changes in Version 1.7-11
o Extended the license from "GPL-2" to "GPL-2 | GPL-3".
o Avoid duplications in Suggests/Imports/Depends in the package's
DESCRIPTION. Use only :: instead of ::: to access certain functions
from other namespaces.
o Added as.list() methods for yearmon/yearqtr.
o Added workaround in Ops.zoo if first argument is not a zoo series
(prompted by Josh Ulrich).
o The transform() method for zoo series now does what method for
data.frame does (instead of just calling it) in order to get
non-standard evaluation.
Upstream changes:
Changes in Version 1.7-11
o Extended the license from "GPL-2" to "GPL-2 | GPL-3".
o Avoid duplications in Suggests/Imports/Depends in the package's
DESCRIPTION. Use only :: instead of ::: to access certain functions
from other namespaces.
o Added as.list() methods for yearmon/yearqtr.
o Added workaround in Ops.zoo if first argument is not a zoo series
(prompted by Josh Ulrich).
o The transform() method for zoo series now does what method for
data.frame does (instead of just calling it) in order to get
non-standard evaluation.
Upstream changes:
Changes in Version 1.7-10
o All methods that had previously been fully exported (merge.zoo,
MATCH.default, ..., and many more) in order to be accessible to
_all_ conceivable generics are now additionally registered as
S3method()s for the standard generics. Exception: as.Date.* are
still only fully exported.
o Added a new mean() method for "zoo" objects that simply does
mean(coredata(obj), ...).
o Added yearmon_trans, scale_x_yearmon and scale_y_yearmon and
yearqtr_trans, scale_x_yearqtr and scale_y_yearqtr to ggplot2 interface.
o Removed the use of the shape and linetype aesthetic by default
in autoplot() method.
o Bug fix in na.fill for univariate series based on 1-column matrices
(provided by Josh Ulrich).
o Added [[ methods for "yearmon" and "yearqtr".
o Constructs like time(obj)[ORDER(time(obj))] are now split up into
two steps in the package code. If zoo is only imported but not
loaded, R can otherwise have problems correctly dispatching to
the new generics ORDER and MATCH.
o as.Date() now also works for yearqtr/yearmon that are all NA
(especially needed for format() and print() method).
Upstream changes:
Changes in Version 1.7-9
o Added ggplot2 interface through autplot() and fortify() methods. Also
support function facet_free().
Changes in Version 1.7-8
o Added rollsum.
o Bugfix in src/lag.c for the case of k > NROW.
An S3 class with methods for totally ordered indexed observations. It
is particularly aimed at irregular time series of numeric
vectors/matrices and factors. Zoo's key design goals are independence
of a particular index/date/time class and consistency with ts and base
R by providing methods to extend standard generics.
