[R] identify object that causes "Error in loadNamespace(name) : there is no package called ‘R.utils’"

Duncan Murdoch murdoch.duncan at gmail.com
Thu Apr 25 12:32:41 CEST 2013

On 13-04-25 3:46 AM, Liviu Andronic wrote:
> Dear Duncan,
> On Wed, Apr 24, 2013 at 11:04 PM, Duncan Murdoch
> <murdoch.duncan at gmail.com> wrote:
>>> What I've done sometimes in debugging is to change that error to a
>>> warning in the getNamespace() function, and add some tracing code to the
>>> serialization code to print the names of objects as they are loaded.
>>> (This goes in ReadItem in src/main/serialize.c.)
>>> I wouldn't expect Liviu to make those changes, but perhaps a "verbose"
>>> option could be added to load(), so that it could be available to users.
>> I have added this in R-devel.  The format of the printed output may well
>> change before this is ever released, but it should be enough to identify the
>> bad item already.
>> You'll need a build of R-devel from r62658 or newer to see this.  Then
>> load("/tmp/a.rda", verbose=TRUE)
>> will print the names of objects as they are read (the names are read after
>> the attributes and before the value).  If you want to see reams of mostly
>> useless information, you can try verbose=n (for some number n=2 or more);
>> this prints names and component numbers to a greater depth.
> Thank you for adding this in R. I will likely test this feature when
> it gets released.

That will be about a year from now...

Duncan Murdoch

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