This function first records all the plots in the R expression as bitmap images, then inserts them into an HTML page and finally creates the animation using the SciAnimator library.
saveHTML(
expr,
img.name = "Rplot",
global.opts = "",
single.opts = "",
navigator = ani.options("nmax") <= 100="" &&="" ani.options("interval")="">= 0.05,
htmlfile = "index.html",
...
)=>
an R expression to be evaluated to create a sequence of images
the filename of the images (the real output will be like
img.name1.png
, img.name2.png
, ...); this name has to be
different for different animations, since it will be used as the
identifiers for each animation; make it as unique as possible; meanwhile,
the following characters in img.name
will be replaced by _
to
make it a legal jQuery string:
!"#$%&'()*+,./:;?@[\]^`{|}~
a string: the global options of the animation; e.g. we can
specify the default theme to be blue using
$.fn.scianimator.defaults.theme = 'blue';
note these options must be
legal JavaScript expressions (ended by ';'
)
the options for each single animation (if there are multiple ones in one HTML page), e.g. to use the dark theme and text labels for buttons:
'utf8': false, 'theme': 'dark'
or to remove the navigator panel (the navigator can affect the smoothness
of the animation when the playing speed is extremely fast (e.g.
interval
less than 0.05 seconds)):
'controls': ['first', 'previous', 'play', 'next', 'last', 'loop',
'speed']
see the reference for a complete list of available options
whether to show the navigator (like a progress bar); by default, the navigator is not shown for performance reasons when the number of images is greater than 100 or the time interval is smaller than 0.05
the filename of the HTML file
other arguments to be passed to ani.options
to
animation options such as the time interval between image frames
The path of the HTML output.
It mainly uses the SciAnimator library, which is based on jQuery. It has a neat interface (both technically and visually) and is much easier to use or extend. Moreover, this function allows multiple animations in a single HTML page -- just use the same HTML filename.
Optionally the source code and some session information can be added below
the animations for the sake of reproducibility (specified by the option
ani.options('verbose')
-- if TRUE
, the description, loaded
packages, the code to produce the animation, as well as a part of
sessionInfo()
will be written in the bottom of the animation;
the R code will be highlighted using the SyntaxHighlighter library for better
reading experience).
Examples at https://yihui.org/animation/example/savehtml/
scianimator official website https://github.com/brentertz/scianimator
Other utilities:
im.convert()
,
saveGIF()
,
saveLatex()
,
saveSWF()
,
saveVideo()