how to organize a lot of R source files
Hi Henrik,
Thanks for your suggestion. I created a directory with 10 R files and
tried the following and measured its time
system.time(sourceDirectory("~/fun", modifiedOnly = F))
system.time(sourceDirectory("~/fun", modifiedOnly = T))
But the second line seems to spend as much time as the first line, I
thought the second line would be faster since no modification is made.
Also the first line reports a warning as follows
In readLines(con = fh) :
incomplete final line found on "~/fun/util1.R"
I don't see such a warning when I use source.
Maybe the two issues are related. Please advise.
thanks
Jeff
On Fri, January 8, 2010 7:56 pm, Henrik Bengtsson wrote:
library("R.utils"); sourceDirectory("myRFiles/", modifiedOnly=TRUE);
See ?sourceDirectory (regardless what the Rd help say, any '...'
argument is passed to sourceTo()).
/Henrik
On Fri, Jan 8, 2010 at 7:38 AM, Hao Cen <hcen at andrew.cmu.edu> wrote:
Hi, I wonder what is a better way to organize a lot of R source files. I have a lot of utility functions written and store them in several source files (e.g util1.R, util2.R,..utilN.R). I also have a master file in which the source command is used to load all the util.R files. When I need to use the utility functions in a new project, I create a new R file (e.g main.R) in which I "source" the master file. The problem with this approach is that anytime a single utility function is modified, I need to rerun the source command in main.R to load the master file, which loads all the utility R files via a loop over each file. Sometimes I have to wait for 10 seconds to get them all loaded. Sometimes I forget to run the source command. Is there a way in R to 1) only reload the file changed (like a make utility) when I run source on all utility files and/or even better 2) reload the changed utility files, when I run a command that use one of those utility functions, without the need for me to source those files. Not sure if packaging solves this issue because the library command has be used every time a utility function is modified and in addition the package has to be rebuilt. I don't worry about sharing the source files at this moment as I am the only user of those utility files. This may be a common issue many R users face. I wonder how other R users solve this issue. thanks Jeff
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