[R-SIG-Mac] R.app history forgets

Loren Engrav engrav at u.washington.edu
Wed May 6 16:10:02 CEST 2009

No no, thank you for helping

To clarify, I am not out to "fix" or "change" anything, or report bugs, I
just want to understand how to efficiently use R.app, my problems are

1-on my systems (one 32 and one 64), Rhistory "forgets" commands which is
how this all started, and
2-I find the Startup Preferences confusing

Ok, Rdata: several explained that in the workspace, a new object "x" will
overwrite an old object "x" without warning, by keeping Rdata's separate one
can use "x" many times for different things, I have always manually saved
important Rdata's and ignored the default Rdata, but I can change, or do
both now that I understand

Now Directory in Preferences: I have checked Always apply and the directory
is ~; the notes say dd of directory will override if not enforced; but if I
dd a folder onto R, the working directory is not ~ but rather the one dd'd
onto R, so does not seem "Always apply" is working

Now Rhistory: again the problem is Rhistory forgets commands on my system,
which is why I got into this, but then I find Rhistory(s) all over

in Prefs I have checked Read on startup and the history file is ~/.Rhistory
(return saves that value, thank you again, this might be in the notes) and I
checked Cleanup history.

It appears that if I work in some directory and then quit w save, the
history is written to both ~/.Rhistory and the directory. So I had 33
.Rhistory(s) on the drive even tho I told R.app to use one.

So I tried your second idea, changed the R.app history name to .xxxRhistory
and voila, ".xxxRhistory" appears where R.app Preferences say and
".Rhistory" appears in the working directory, so would appear you are
correct; R.app is writing out .xxxRhistory and somebody else is writing

Now if I work in the default directory AND have R.app set to write
.xxxRhistory AND quit/save, I again find in the directory both .xxxRhistory
and .Rhistory, so you are again correct; R.app writes .xxxRhistory and
somebody else writes .Rhistory

And the .Rhistory file is written about 4 sec after the .xxxRhistory file
and the .Rhistory file is 0kb

So then your third idea might be correct; ie if R.app writes .Rhistory it is
overwritten by the second writing of .Rhistory and if the second .Rhistory
is missing commands, then it would appear that R.app is forgetting commands

In sum
1-is it possible that .Rhistory from R overwrites .Rhistory from R.app and
the history that R uses is incomplete so commands are "forgotten"
2-and of course what is the work around for #2
3-and lesser, what does "Always apply" do for the directory

> From: Rob Goedman <robjgoedman at me.com>
> Date: Tue, 05 May 2009 21:34:16 -0700
> To: Loren Engrav <engrav at u.washington.edu>
> Cc: "r-sig-mac at stat.math.ethz.ch" <r-sig-mac at stat.math.ethz.ch>
> Subject: Re: [R-SIG-Mac] R.app history forgets
> Loren,
> Please find my comments inserted below. Thank you for being persistent!
> On May 5, 2009, at 4:13 PM, Loren Engrav wrote:
>> Ok, so Rdata goes to the directory one is working in; and so will have
>> Rdata's in many folders which seems strange
> As a counter example, I work on 5 or 6 different projects
> simultaneously,
> each in its own directory sub tree. Several of the projects need to
> store the
> workspace after I'm done. This is implemented as the default mechanism.
> Through the .Last mechanism you can get your desired behavior. But
> unfortunately, it will take some extra work to define the .Last
> function.
> That should take care of many .RData's.
>> As for Rhistory if one declines to save workspace, Rhistory is
>> written to
>> the directory specified; if one saves workspace Rhistory is written
>> to both
>> the directory specified and the workspace directory, ie to both;
>> this also
>> seems strange.
> Could it be R, not R.app that creates the .Rhistory file if the
> workspace is
> saved????? I am not aware of this behavior (the fact that R creates a
> history file when asked to save the workspace), or simply might have
> missed it if it was introduced in the 4 or 5 years since I worked on the
> history mechanism for R.app.
>> And the troubled history is attached
>> This seems problematic; not knowing where these files are going and
>> winding
>> up with many; and then the forgetful Rhistory as well
> And indeed, in that case, if the name of the history file set in the
> R.app
> preferences is the same as R's default name (.Rhistory) ***and*** the
> workspace is saved, the history file seems to forget recent commands
> because R.app writes its history file which is subsequently overwitten
> by R.
> Maybe someone familiar with the R source can confirm this behavior, I
> have
> rarely looked at the R source, just at the R.app code.
> Rob
>> Thank you
>>> From: Rob Goedman <robjgoedman at me.com>
>>> Date: Tue, 05 May 2009 12:20:51 -0700
>>> To: Loren Engrav <engrav at u.washington.edu>
>>> Cc: "r-sig-mac at stat.math.ethz.ch" <r-sig-mac at stat.math.ethz.ch>
>>> Subject: Re: [R-SIG-Mac] R.app history forgets
>>> Loren,
>>> Thanks for the screen shot.
>>> A bit more experimentation and a quick look at the code refreshed my
>>> memory.
>>> If you exit R, .RData is always written to the directory you are in.
>>> In your setting, on q() to quit, R.app should ask for conformation to
>>> save the workspace.
>>> If you don't change your directory it should create a .RData in your
>>> home directory (that's where your R.app started).
>>> Preferences do not provide help here, but you could create a .Last
>>> function with a save.image() command in it to force storing
>>> the .RData
>>> file to a fixed directory. In that case you can opt to set the Quit
>>> preferences to 'No' (don't ask me to store the workspace).
>>> For history its a (tiny) bit more flexible. By selecting an absolute
>>> path, like you have in your setting, it will always store the current
>>> available history commands in that file (including the ones that were
>>> read in during startup, so the new commands are at the end of the
>>> file).
>>> If this does not work for you, can you send me your ~/.Rhistory file
>>> after executing a last new command in R.app, maybe something like
>>> 'testHist <- 1' and quitting R.app?
>>> As you found in the archives, a few folks did have trouble (usually
>>> because R.app could not write to the selected directory).
>>> After this email it might be better to take this discussion off-line.
>>> Regards,
>>> Rob
>>> On May 5, 2009, at 11:50 AM, Loren Engrav wrote:
>>>> Thank you
>>>> attached
>>>>> From: Rob Goedman <robjgoedman at me.com>
>>>>> Date: Tue, 05 May 2009 11:36:25 -0700
>>>>> To: Loren Engrav <engrav at u.washington.edu>
>>>>> Cc: "r-sig-mac at stat.math.ethz.ch" <r-sig-mac at stat.math.ethz.ch>
>>>>> Subject: Re: [R-SIG-Mac] R.app history forgets
>>>>> Loren,
>>>>> Can you send me a screen copy of the Startup preferences ( with the
>>>>> cursor inside the Startup Preferences window, press Command-
>>>>> Shift-4,
>>>>> followed by pressing the spacebar, followed by a click of the mouse
>>>>> button, this should write it to your Deskop as 'Picture 1').
>>>>> Rob
>>>>> On May 5, 2009, at 11:24 AM, Loren Engrav wrote:
>>>>>> Mac OS 10.5.5 and R.app 2.9.0
>>>>>> I start up, run a few things, and quit (w or wo save) and no
>>>>>> directory
>>>>>> changes
>>>>>> Then I restart and the recent commands are no longer in Rhistory
>>>>>> The only box I have checked in History preferences is Read on
>>>>>> Startup and I
>>>>>> have max entries set to 5000
>>>>>> I see queries about this before but I could find no solution
>>>>>> Thank you
>>>>>> [[alternative HTML version deleted]]
>>>>>> _______________________________________________
>>>>>> R-SIG-Mac mailing list
>>>>>> R-SIG-Mac at stat.math.ethz.ch
>>>>>> https://stat.ethz.ch/mailman/listinfo/r-sig-mac
>>>> <Picture 3.png>
>>> On May 5, 2009, at 9:37 AM, Loren Engrav wrote:
>>>> Thank you
>>>> The return before clicking anywhere else solved that problem, clever
>>>> So I trash all invisible .Rhistory and .Rdata files
>>>> Then made a new folder (called R_History_Data) and aim Preferences
>>>> at this
>>>> folder (using the return)
>>>> Then run R.app and yes, I have one .Rhistory and one .Rdata in that
>>>> folder
>>>> But then I change the working directory and do some stuff
>>>> Then quit and save working directory
>>>> And now I have two of each invisible files, one in R_History_Data
>>>> and one in
>>>> the working directory folder
>>>> So it still appears as I move from directory to directory I will
>>>> leave
>>>> invisible .Rhistory and .Rdata files all over
>>>> Is it possible to have Rhistory and Rdata always written to the
>>>> R_History_Data folder?
>> <TroubledHistory.history>

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