saveSWF: Convert images to Flash animations.

Description

Convert images to Flash animations. This function opens a graphical device first to generate a sequence of images based on expr, then makes use of the commands in `SWF Tools' (png2swf, jpeg2swf, pdf2swf) to convert these images to a single Flash animation.

Usage

saveSWF(expr, img.name = "Rplot", swf.name = "animation.swf", 
    swftools, ...)

Arguments

expr

an expression to generate animations; use either the animation functions (e.g. brownian.motion()) in this package or a custom expression (e.g.

for(i in 1:10)
plot(runif(10), ylim = 0:1)

img.name

file name of the sequence of images (`pure' name; without any format or extension)

swf.name

file name of the Flash file

swftools

the path of `SWF Tools', e.g. C:/swftools. This argument is to make sure that png2swf, jpeg2swf and pdf2swf can be executed correctly. If it is NULL, it should be guaranteed that these c

...

other arguments passed to ani.options, e.g. ani.height and ani.width, ...

Value

An integer indicating failure (-1) or success (0) of the converting (refer to system).

References

http://animation.yihui.name/animation:start#create_flash_animations

Examples

Run this code

## from png to swf
saveSWF({
    par(mar = c(3, 3, 1, 1.5), mgp = c(1.5, 0.5, 0))
    knn.ani(test = matrix(rnorm(16), ncol = 2), cl.pch = c(16, 
        2))
}, swf.name = "kNN.swf", interval = 1.5, nmax = ifelse(interactive(), 
    40, 2))

## from pdf (vector plot) to swf; can set the option 'pdftk' to compress PDF
saveSWF({
    brownian.motion(pch = 21, cex = 5, col = "red", bg = "yellow")
}, swf.name = "brownian.swf", interval = 0.2, nmax = 30, ani.dev = "pdf", 
    ani.type = "pdf", ani.height = 6, ani.width = 6)

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