standard deviation on dataframe does not work

Question

I have an unexpected [for me at least] error in calculating a standard deviation. The idea [*] is to convert all missing values to 1 and 0 otherwise. Then extract variable

Answer 1

sd on data.frames has been defunct since R-3.0.0:

> ## Build a db of all R news entries.
> db <- news()
> ## sd
> news(grepl("sd", Text), db=db)
Changes in version 3.0.3:

PACKAGE INSTALLATION

    o   The new field SysDataCompression in the DESCRIPTION file allows
        user control over the compression used for sysdata.rda objects in
        the lazy-load database.

Changes in version 3.0.0:

DEPRECATED AND DEFUNCT

    o   mean() for data frames and sd() for data frames and matrices are
        defunct.

Use sapply(x, sd) instead.