# contour-methods

0th

Percentile

##### Contour plots for flow data

Basic contour plots for both flowFrames and flowSets. The densities for the contours are estimated using the fast kernel density estimation algorithm bkde2D.

Keywords
methods
##### Usage
## S3 method for class 'flowFrame':
contour(x, y = 1:2, nlevels = 10, bw,
grid.size = c(65, 65), add = FALSE, xlab, ylab, xlim, ylim, lwd = 1,
lty = 1, col = par("fg"), fill = "transparent", ...)
##### Arguments
x
An object of class flowFrame or flowSet.
y
Numeric or character vector of length 2 indicating the channels to plot.
nlevels
The approximate number of contour line levels, see contour for details.
bw
The bandwidth factor used for the kernel density estimation, see bkde2D for details.
grid.size
The grid size used for the kernel density estimation, see bkde2D for details.
Logical, indicating whether contour lines should be superimposed on an existing plot.
xlab,ylab
The axis annotation.
xlim,ylim
The plotting ranges.
lwd,lty,col,fill
The usual plotting parameters, i.e. the line width, line type, line color and fill color. When using a fill color you should consider alpha blending to improve the results.
...
Parameters that are passed on to the plotting functions.

bkde2D, contour, flowFrame, flowSet

##### Aliases
• contour
• contour,ANY-method
• contour,flowFrame-method
• contour,flowSet-method
• contour-methods
##### Examples
data(GvHD)

## simple contour plot
contour(GvHD[[1]])

## overlay with existing plot
plot(GvHD[[1]], c("FSC-H", "SSC-H"))
contour(GvHD[1:3], col=cols, fill=cols)