Hi all,
It seems that RTools 4.2 conflicts with git bash on Windows 10.
When I use the git bash terminal in RStudio and I run `make --version`, I get
the following error:
$ C:/rtools42/usr/bin/make.exe --version
1 [main] make (5948) C:\rtools42\usr\bin\make.exe: *** fatal error -
cygheap
On 12/23/22 15:45, sergio.vign...@unibe.ch wrote:
Hi all,
It seems that RTools 4.2 conflicts with git bash on Windows 10.
You can't mix tools from two different distributions based on msys2 (or
cygwin). You cannot e.g. call "make" of one of them from a shell ran in
another one. This is due t
Hello,
I've come across what seems to be a bug in optim that has become a nuisance
for me.
To recreate the bug, run:
optim(c(0,0), function(x) {x[1]*1e-317}, lower=c(-1,-1), upper=c(1,1),
method='L-BFGS-B')
The error message says:
Error in optim(c(0, 0), function(x) { :
non-finite value supp
Às 17:30 de 23/12/2022, Collin Erickson escreveu:
Hello,
I've come across what seems to be a bug in optim that has become a nuisance
for me.
To recreate the bug, run:
optim(c(0,0), function(x) {x[1]*1e-317}, lower=c(-1,-1), upper=c(1,1),
method='L-BFGS-B')
The error message says:
Error in op
Collin,
It is interesting that you get such strange results when passing denormal
values to optim(). Several possibilities for this spring to mind.
A better question though might be, "What kind of results are you expecting
when you pass such small values to optim()?" In general, you shouldn't
h
Extreme scaling quite often ruins optimization calculations. If you think
available methods
are capable of doing this, there's a bridge I can sell you in NYC.
I've been trying for some years to develop a good check on scaling so I can
tell users
who provide functions like this to send (lots of)
The optim help page mentions scaling in the discussion of the "control"
argument. Specifically under the parscale description:
"Optimization is performed on par/parscale and these should be
comparable in the sense that a unit change in any element produces about
a unit change in the scaled va
