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df_df
2011 Mar 17
1
Using barplot() with zoo -- names.arg not permitted?
...cases -- such as "time" -- on an
individual basis.)
The data frame contains certain columns whose values are counters, so I
generate a zoo of the diff():
oid = "kern.cp_time_"
pat = paste("^", oid, sep = "")
class(df$time) <- "POSIXct"
df_d <- diff(zoo(df[, grep(pat, names(df))], order.by = df$time))
I then save the start & end timestamps for future reference, and
generate another zoo, this one containing only the percentages from
df_d:
cpu_states <- c("sys", "intr", "user", "nice"...