Compute the number of non-missing observations. Provides a 'default' method to handle vectors, and a method for data frames.
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Optional parameters (currently ignored)
Calculate the number of observations in
For numeric vectors, this is simply the number of non-NA elements, as computed by
For dataframe objects, the result is a vector containing the number of non-NA elementes of each column.
nobs.lm functions defined in gtools are
simply aliases for the functions in the base R
provided for backwards compatibility.
Either single numeric value (for vectors) or a vector of numeric values (for data.frames) giving the number of non-missing values.
The base R package
stats now provides a S3 dispatch function for
nobs, and methods for for objects of classes "lm", "glm",
"nls" and "logLik", as well as a default method.
Since they provided a subset of the the functionality, the base
method dispatch (
nobs) function and method for "lm" objects
nobs.lm) are, as of
gdata version 2.10.1, simply
aliases for the equivalent functions in the base R
gdata's default method (
vectors and hands any other data/object types to
Gregory R. Warnes [email protected]
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sh: 1: cannot create /dev/null: Permission denied gdata: Unable to locate valid perl interpreter gdata: gdata: read.xls() will be unable to read Excel XLS and XLSX files gdata: unless the 'perl=' argument is used to specify the location of a gdata: valid perl intrpreter. gdata: gdata: (To avoid display of this message in the future, please ensure gdata: perl is installed and available on the executable search path.) sh: 1: cannot create /dev/null: Permission denied gdata: Unable to load perl libaries needed by read.xls() gdata: to support 'XLX' (Excel 97-2004) files. gdata: Unable to load perl libaries needed by read.xls() gdata: to support 'XLSX' (Excel 2007+) files. gdata: Run the function 'installXLSXsupport()' gdata: to automatically download and install the perl gdata: libaries needed to support Excel XLS and XLSX formats. Attaching package: 'gdata' The following object is masked from 'package:stats': nobs The following object is masked from 'package:utils': object.size The following object is masked from 'package:base': startsWith  9  7 x y 98 99  98
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