Plot Method for observed data

Description

Plot all observed variables in matrix formalt

Usage

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obsplot(x, ..., which = NULL, xyswap = FALSE, ask = NULL)

Arguments

x

a matrix or data.frame, containing the observed data to be plotted. The 'x'-values (first axis) should be the first column.

Several other matrices or data.frames can be passed in the ..., after x (unnamed) - see second example.

If the first column of x consists of factors, or characters (strings), then it is assumed that the data are presented in long (database) format, where the first three columns contain (name, x, y). See last example.

which

the name(s) or the index to the variables that should be plotted. Default = all variables, except the first column.

ask

logical; if TRUE, the user is asked before each plot, if NULL the user is only asked if more than one page of plots is necessary and the current graphics device is set interactive, see par(ask=.) and dev.interactive.

xyswap

if TRUE, then x-and y-values are swapped and the y-axis is from top to bottom. Useful for drawing vertical profiles.

...

additional arguments.

The graphical arguments are passed to plot.default and points.

The dots may contain other matrices and data.frames with observed data to be plotted on the same graphs as x - see second example.

The arguments after ... must be matched exactly.

Details

The number of panels per page is automatically determined up to 3 x 3 (par(mfrow = c(3, 3))). This default can be overwritten by specifying user-defined settings for mfrow or mfcol. Set mfrow equal to NULL to avoid the plotting function to change user-defined mfrow or mfcol settings.

Other graphical parameters can be passed as well. Parameters are vectorized, either according to the number of plots (xlab, ylab, main, sub, xlim, ylim, log, asp, ann, axes, frame.plot,panel.first,panel.last, cex.lab,cex.axis,cex.main) or according to the number of lines within one plot (other parameters e.g. col, lty, lwd etc.) so it is possible to assign specific axis labels to individual plots, resp. different plotting style. Plotting parameter ylim, or xlim can also be a list to assign different axis limits to individual plots.

See Also

print.deSolve, ode, deSolve

Examples

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## 'observed' data
AIRquality <- cbind(DAY = 1:153, airquality[, 1:4])
head(AIRquality)
obsplot(AIRquality, type="l", xlab="Day since May")

## second set of observed data
AIR2 <- cbind( 1:100, Solar.R = 250 * runif(100), Temp = 90-30*cos(2*pi*1:100/365) )

obsplot(AIRquality, AIR2, type = "l", xlab = "Day since May" , lwd = 1:2)

obsplot(AIRquality, AIR2, type = "l", xlab = "Day since May" , 
         lwd = 1 : 2, which =c("Solar.R", "Temp"), 
         xlim = list(c(0, 150), c(0, 100)))

obsplot(AIRquality, AIR2, type = "l", xlab = "Day since May" , 
         lwd = 1 : 2, which =c("Solar.R", "Temp"), log = c("y", ""))

obsplot(AIRquality, AIR2, which = 1:3, xyswap = c(TRUE,FALSE,TRUE))

## ' a data.frame, with 'treatments', presented in long database format
Data <- ToothGrowth[,c(2,3,1)]
head   (Data)
obsplot(Data, ylab = "len", xlab = "dose")

# same, plotted as two observed data sets
obsplot(subset(ToothGrowth, supp == "VC", select = c(dose, len)),
        subset(ToothGrowth, supp == "OJ", select = c(dose, len)))