Hi Martin,
Thanks for providing the reference.
In this particular case, it helped me to discover that 13 JVM threads
were garbage collecting in parallel, occasionally resulting in a race
condition. Setting
options(java.parameters = "-XS:ParallelGCThreads=1")
appears to resolve the issue
Thanks Jeff; indeed it works:
.jcall("java/lang/System", method = "gc")
On 02/05/2018 11:53 PM, Jeff Newmiller wrote:
rJava offers a mechanism to call arbitrary methods in Java. Wouldn't you use
that mechanism to call whatever you would call if you were programming in Java
(e.g. System.gc
Since 2008, Microsoft (formerly Revolution Analytics) staff and guests have
written about R at the Revolutions blog (http://blog.revolutionanalytics.com)
and every month I post a summary of articles from the previous month of
particular interest to readers of r-help.
In case you missed them, here
Oh ok. Thanks very much. I will have to restrict to a shorter interval.
Hanna
2018-02-06 14:33 GMT-05:00 Göran Broström :
> Hi Hanna,
>
> your function is essentially zero outside a short interval around 9. And
> the help page states: "If the function is approximately constant (in
> particula
Hi Hanna,
your function is essentially zero outside a short interval around 9. And
the help page states: "If the function is approximately constant (in
particular, zero) over nearly all its range it is possible that the
result and error estimate may be seriously wrong."
You could try to inte
Sorry. I meant in the previous email that the function h() is a monotone
decreasing function. Thanks very much.
2018-02-06 13:32 GMT-05:00 li li :
> Hi all,
> The function h below is a function of c and it should be a monotone
> increasing function since the integrand is nonnegative and integra
Hi all,
The function h below is a function of c and it should be a monotone
increasing function since the integrand is nonnegative and integral is
taken from c to infinity. However, as we can see from the plot, it is not
shown to be monotone. Something wrong with the usage of integrate function?
Thank you for your response. Note that with R 3.4.3, I get the same
result with simplify=TRUE or simplify=FALSE.
My problem was the behaviour was different if I define my columns as
character or as numeric but for now some minutes I discovered there also
is a stringsAsFactors option in the fun
Don't use aggregate's simplify=TRUE when FUN() produces return
values of various dimensions. In your case, the shape of table(subset)'s
return value depends on the number of levels in the factor 'subset'.
If you make B a factor before splitting it by C, each split will have the
same number of leve
The normal input to a factory that builds cars is car parts. Feeding whole
trucks into such a factory is likely to yield odd-looking results.
Both aggregate and table do similar kinds of things, but yield differently
constructed outputs. The output of the table function is not well-suited to be
It is really hard to help you fix a function usage error if you don't show us
how you used the function. [1][2][3]
As for helping a customer by asking for help on the wrong list... you are not
an expert on the topic, and are asking a group that might or might not know the
theory behind your que
Hi,
Calling
gdistance::shortestPath
gives me the error
Error in asMethod(object) :
not a symmetric matrix; consider forceSymmetric() or symmpart()
The output of dput(.traceback()) is
pairlist("stop(\"not a symmetric matrix; consider forceSymmetric() or
symmpart()\")",
"asMethod(
On 6 February 2018 at 04:34, Benjamin Tyner wrote:
> Hi
>
> Does rJava offer a way to instruct the JVM to perform a garbage collection?
Do you really, really need to run the garbage collector?
Consider reading:
https://stackoverflow.com/questions/5086800/java-garbage-collection
Regards
Martin
Dear R users,
When I use aggregate with table as FUN, I get what I would call a
strange behaviour if it involves numerical vectors and one "level" of it
is not present for every "levels" of the "by" variable:
---
> df <-
data.frame(A=c(1,1,1,1,0,0,0,0),B=c(1,0,1,0,0,
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