R help - Sep 2014 - Custom Function Not Completely working

Hi R Experts,

I'm in the process of creating a set of convenience functions for myself. I
am somewhat new to writing functions in r.

In this example I wanted to load both existing files called KuhnPerform.Rdata
and KuhnPerform.Rhistory. However it only works for loading the .Rhistory file
and not the .Rdata file. Can someone please tell me how to fix this so that it
loads both .Rdata and .Rhistory?

I checked dir() that these files are in my working directory and are spelled
correctly

loads<-function(filename="KuhnPerform"){
load(paste0(filename,".Rdata")) # Load a previously saved workspace.
loadhistory(paste0(filename,".Rhistory")) # Load a previously saved
history file.
}

Dan
Workforce Analyst
LLNL


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On 29/09/2014, 9:07 PM, Lopez, Dan wrote:
> Hi R Experts,
> 
> I'm in the process of creating a set of convenience functions for
myself. I am somewhat new to writing functions in r.
> 
> In this example I wanted to load both existing files called
KuhnPerform.Rdata and KuhnPerform.Rhistory. However it only works for loading
the .Rhistory file and not the .Rdata file. Can someone please tell me how to
fix this so that it loads both .Rdata and .Rhistory?
> 
> I checked dir() that these files are in my working directory and are
spelled correctly
> 
> loads<-function(filename="KuhnPerform"){
> load(paste0(filename,".Rdata")) # Load a previously saved
workspace.
> loadhistory(paste0(filename,".Rhistory")) # Load a previously
saved history file.
> }
You're loading the objects from the Rdata file into the evaluation frame
of your function, and they go away afterwards.  You need to specify
where they should be loaded using the envir argument, e.g.


load(paste0(filename,".Rdata"), envir = parent.frame())

(The funny thing here is that the default for envir is parent.frame(),
but it means something different in that context.)

Duncan Murdoch
> 
> Dan
> Workforce Analyst
> LLNL
> 
> 
> 	[[alternative HTML version deleted]]
> 
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