knit_watch: Watch an input file continuously and knit it when it is updated
Description
Check the modification time of an input file continously in an infinite loop.
Whenever the time indicates the file has been modified, call a function to
recompile the input file.
an input file path (or a character vector of mutiple paths of
input files)
compile
a function to compile the input file, e.g. it can be
knit or knit2pdf depending on the input file
and the output you want
interval
a time interval to pause in each cycle of the infinite loop
...
other arguments to be passed to the compile function
Details
This is actually a general function not necessarily restricted to
applications in knitr. You may specify any compile function to
process the input file. To stop the infinite loop, press the
Escape key or Ctrl + C (depending on your editing environment
and operating system).