Displaying 9 results from an estimated 9 matches for "viveksutra".
2017 Sep 19
1
symbolic computing example with Ryacas
...>
>
> Bert Gunter
>
> "The trouble with having an open mind is that people keep coming along and
> sticking things into it."
> -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
>
> On Tue, Sep 19, 2017 at 2:37 AM, Vivek Sutradhara <viveksutra at gmail.com>
> wrote:
>
>> Hi all,
>> I am trying to implement the following matlab code with Ryacas :
>>
>> syms U x x0 C
>>
>> d1=diff(U/(1+exp(-(x-x0)/C)),x);
>>
>> pretty(d1)
>>
>> d2=diff(U/(1+exp(-(x-x0)/C)),x,2);
>>...
2017 Sep 19
0
symbolic computing example with Ryacas
...hat come with the
package?
Cheers,
Bert
Bert Gunter
"The trouble with having an open mind is that people keep coming along and
sticking things into it."
-- Opus (aka Berkeley Breathed in his "Bloom County" comic strip )
On Tue, Sep 19, 2017 at 2:37 AM, Vivek Sutradhara <viveksutra at gmail.com>
wrote:
> Hi all,
> I am trying to implement the following matlab code with Ryacas :
>
> syms U x x0 C
>
> d1=diff(U/(1+exp(-(x-x0)/C)),x);
>
> pretty(d1)
>
> d2=diff(U/(1+exp(-(x-x0)/C)),x,2);
>
> pretty(d2)
>
> solx2 = solve(d2 == 0, x, &...
2017 Sep 19
2
symbolic computing example with Ryacas
Hi all,
I am trying to implement the following matlab code with Ryacas :
syms U x x0 C
d1=diff(U/(1+exp(-(x-x0)/C)),x);
pretty(d1)
d2=diff(U/(1+exp(-(x-x0)/C)),x,2);
pretty(d2)
solx2 = solve(d2 == 0, x, 'Real', true)
pretty(solx2)
slope2=subs(d1,solx2)
I have tried the following :
library(Ryacas)
x <- Sym("x");U <- Sym("U");x0 <-
2017 Aug 11
0
Annotation Ticks on the axis
> On Aug 11, 2017, at 3:23 AM, Vivek Sutradhara <viveksutra at gmail.com> wrote:
>
> Hi,
> Thanks for the quick answer. I looked into the link that you provided. But
> I am still not able to implement a solution. Here is my attempt :
>
> library(ggplot2)
> x<-1:10
> y<-x^2
> df<-data.frame(x=x,y=y)
> p1<-ggplot...
2017 Oct 19
1
overlaying points and lines on a surface3d rgl plot with axes
Hi R users and experts,
I am interested in learning more about the use of 3D plots. Specifically, I
want to add points and lines to a surface plot. And get the axes and labels
plotted also. Here is what I have tried with an example data set :
library(rgl)
vol2 <- 2*volcano # Exaggerate the relief
library(reshape)
mvol2 <- melt(vol2)
str(mvol2)
# First, persp and persp3d plots do not succeed
2017 Aug 11
2
Annotation Ticks on the axis
Hi,
Thanks for the quick answer. I looked into the link that you provided. But
I am still not able to implement a solution. Here is my attempt :
library(ggplot2)
x<-1:10
y<-x^2
df<-data.frame(x=x,y=y)
p1<-ggplot(df,aes(x,y))+geom_point()+
scale_x_log10(
breaks = scales::trans_breaks("log10", function(x) 10^x),
labels = scales::trans_format("log10",
2017 Aug 11
2
Annotation Ticks on the axis
Hi all,
I would like to have help in getting annotation ticks (corresponding to the
minor grid) on my plot. Here is my toy example :
par(mar=c(5, 6, 5, 5) + 0.1)
x<-1:10
y<-x^2
plot(x,y,log="xy",xlab="log(x)",ylab="log(y)")
par(new=T)
2017 Jun 03
3
cygwin1.dll problems when installing packages from source
Hi all,
I am having some problems in updating some packages from source. I start
with :
install.packages("Boom",lib="C:/RownLib",type="source")
I get the following error message :
* installing *source* package 'Boom' ...
** package 'Boom' successfully unpacked and MD5 sums checked
** libs
*** arch - i386
c:/Rtools/mingw_32/bin/g++ -std=gnu++11
2017 Jun 03
2
cygwin1.dll problems when installing packages from source
Hi,
As far as I can see, no.
On checking, I have confirmed that the only location of
cygwin1.dll is :
C:\Rtools\bin
Thanks
Vivek
2017-06-03 12:57 GMT+02:00 Duncan Murdoch <murdoch.duncan at gmail.com>:
> On 03/06/2017 6:31 AM, Vivek Sutradhara wrote:
>
>> Hi all,
>> I am having some problems in updating some packages from source. I start
>> with :
>>