On Wed, Jun 19, 2013 at 11:50 AM, Erin Hodgess wrote:
> Hello yet again, R People:
>
> I was working with Ryacas and yacas last night and all was well.
>
> Now this morning, I keep getting the following:
>
>> a <- Sym("a")
>> a
> Error in summary.connection(x) : invalid connection
>>
>
> When I go
t.org [mailto:r-help-boun...@r-project.org] On
Behalf Of Erin Hodgess
Sent: 19. juni 2013 17:50
To: R help
Subject: [R] Ryacas loads but yacas has an error
Hello yet again, R People:
I was working with Ryacas and yacas last night and all was well.
Now this morning, I keep getting the following:
>
Hello yet again, R People:
I was working with Ryacas and yacas last night and all was well.
Now this morning, I keep getting the following:
> a <- Sym("a")
> a
Error in summary.connection(x) : invalid connection
>
When I go to yacas from the command line, it works fine.
Any suggestions, please
On Tue, Sep 4, 2012 at 5:19 PM, Jason Romine wrote:
> Thank you Gabor. I tried to exhaust all troubleshooting solutions listed on
> the site you suggested prior to posting my question. Perhaps you could
> share what this error is stemming from. Interestingly, on another machine I
> have no issu
Thank you Gabor. I tried to exhaust all troubleshooting solutions listed on
the site you suggested prior to posting my question. Perhaps you could
share what this error is stemming from. Interestingly, on another machine I
have no issue with it when I run R 2.10, whereas when I try Ryacas with R
On Tue, Sep 4, 2012 at 2:34 PM, Jason Romine wrote:
> I am having issues with Ryacas errors. I searched and found this error was
> reported in 2006, but nothing since.
>
It works for me on my Windows Vista laptop. Suggest you review the
toubleshooting section on the home page
http://ryacas.goog
I am having issues with Ryacas errors. I searched and found this error was
reported in 2006, but nothing since.
> library(Ryacas)
Loading required package: XML
> yacas(expression(Factor(x^2-1)))
[1] "Starting Yacas!"
CommandLine(1) : Expecting ) closing bracket for sub-expression, but got ^
inste
Read the troubleshooting section on the home page:
http://ryacas.googlecode.com . Some common problems are that you did
not install yacas itself (issue yacasInstall() command without args
and it will do that for you) and that you are using the wrong version
of the XML package.
> library(Ryacas)
L
I have been trying to get the Ryacas package to work without any
success. I do not seem to be able to the "Sym" function work, for
example:
> library(XML)
> library(Ryacas)
> a=Sym("a")
> a
Error in summary.connection(x) : invalid connection
I am windows XP with R 2.10
Thanks for you help
g
You can only use those functions that Ryacas knows about
or that Yacas 1.0.63 knows about:
library(Ryacas)
View(transtab)
and
ls("package:Ryacas")
The Ryacas home page http://ryacas.googlecode.com
has links to the yacas home page.
Sometimes using the first few terms of the Taylor representatio
I'm tinkering around in Ryacas trying to find an easy way to get the
first and second partial derivatives of mu and sigma from a normal
distribution (actually a bitterly ugly likelihood but this example works
for now).
I've done all of the work in Mathematica, but I then need to manually
write R
Don't think your settings are wrong. I guess yacas is not (yet?)
Mathematica.
Yacas (in a terminal) gives:
In> Simplify(a*((1/(b + E) - b/(b + E)^2)/(b/(b + E))) - N * ((1/(b +
E) - b/(b + E)^2)/(1 - (b/(b + E)
Out> (a*b^5*E^2+5*a*b^4*E^3+10*a*b^3*E^4+10*a*b^2*E^5+5*a*b*E^6+a*E^7+
(-5)*b
There is either something wrong with either me or is Yacas/Ryacas doing odd
things. See below I ask to simpify an expression and the there's output! If
this is a simplification.. well.. Do you think there is something set wrong
somewhere. Thanks.
> library(Ryacas)
Loading required package: XML
>
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