drawTimeAxis {hydroTSM}R Documentation

Customized Time Axis

Description

For a nice time series plot, this function draws a customized time axis, with annual, monthly, daily and sub-daily time marks and labels.

Usage

drawxaxis(x, tick.tstep = "auto", lab.tstep = "auto", 
          lab.fmt=NULL, cex.axis=1, mgp=c(3, 2, 0), ...)

Arguments

x

time series that will be plotted using the X axis that will be draw class(x) must be ts or zoo

tick.tstep

Character indicating the time step that have to be used for putting the ticks on the time axis. Valid values are: auto, years, quarters, months,weeks, days, hours, minutes, seconds.

lab.tstep

Character indicating the time step that have to be used for putting the labels on the time axis. Valid values are: auto, years, quarters, months,weeks, days, hours, minutes, seconds.

lab.fmt

Character indicating the format to be used for the label of the axis. See format in as.Date. If not specified (lab.fmt=NULL), it will try to use:
-) "%Y-%m-%d" when lab.tstep=="days",
-) "%b-%Y" when lab.tstep=="year" or lab.tstep=="month".

cex.axis

magnification of axis annotation relative to cex (See par).

mgp

The margin line (in mex units) for the axis title, axis labels and axis line (See par). Default value is mgp = c(3, 2, 0).

...

further arguments passed to the axis function or from other methods.

Note

From version 0.3-0 it changed its name from drawxaxis to drawTimeAxis, in order to have a more intuitive name. The old drawxaxis function is deprecated, but still be kept for compatibility reasons.

Author(s)

Mauricio Zambrano-Bigiarini, mzb.devel@gmail

Examples

## Loading the SanMartino precipitation data
data(SanMartinoPPts)
x <- window(SanMartinoPPts, end=as.Date("1930-12-31"))

## Plotting the daily ts only, and then automatic 'x' axis
plot(x, xaxt = "n", xlab="Time")
drawTimeAxis(x) 

## Plotting the daily ts only, and then monthly ticks in the 'x' axis, 
## with annual labels.
plot(x, xaxt = "n", xlab="Time")
drawTimeAxis(x, tick.tstep="months", lab.tstep="years") 

[Package hydroTSM version 0.5-1 Index]