Thank you Rich. It works like a charm! Earlier I worked around
by judging its determinant:
dd<-NULL
if (invH) dd<-det(obj$hessian)
if (invH & exists("dd")){
...
}
Now I do
if (!is.null(obj$hessian) & invH){
...
}
which is more direct. Thanks again.
Steven
At 01:50 AM 10/19/2014, Richard M.
Hi everyone,
This may be a trivial solution but I would appreciate any help.
I have a database with three variables. I would like to plot the first two
variables in a xy plot making the color of points proportional to the values in
the third variable. Given that many points overlap, I decided
Dear All,
Thanks for the useful ideas.
This is how I solved the problem and it works well.
sowdays=function(data,Year){
Year = unique(data$Year)
#gives you sum of rain in 2 consecutive days
twodays <- rowSu
On Fri, 17 Oct 2014 12:52:04 PM Gunnar Oehmichen wrote:
> Hello,
>
> I would like to draw a circle on top of a pie chart (The plot does not
> need to fullfill scientific standards). The circle represents the
> relation of a reference-value in comparison to the summed values of
the
> pie-pieces. T
On Sun, 19 Oct 2014 08:09:28 AM Camilo Mora wrote:
> Hi everyone,
>
> This may be a trivial solution but I would appreciate any help.
>
> I have a database with three variables. I would like to plot the first
two
> variables in a xy plot making the color of points proportional to the
> values in
Dear,
I have to compute the trace of a product between four matrices. For
example, I know the matrices Wi, Wj and C, I need to compute this
-trace(Wi%*%C^-1%*%Wj%*%C^-1)
I would like to avoid compute the complete matrix and after take the
diagonal, something like
sum(diag( solve(Wi,C)%*% solve
> On 19 Oct 2014, at 16:43 , Wagner Bonat wrote:
>
> Dear,
>
> I have to compute the trace of a product between four matrices. For
> example, I know the matrices Wi, Wj and C, I need to compute this
>
> -trace(Wi%*%C^-1%*%Wj%*%C^-1)
>
>
> I would like to avoid compute the complete matrix and
On 10/19/2014 8:42 AM, peter dalgaard wrote:
On 19 Oct 2014, at 16:43 , Wagner Bonat wrote:
Dear,
I have to compute the trace of a product between four matrices. For
example, I know the matrices Wi, Wj and C, I need to compute this
-trace(Wi%*%C^-1%*%Wj%*%C^-1)
I would like to avoid compute
On 10/19/2014 8:42 AM, peter dalgaard wrote:
On 19 Oct 2014, at 16:43 , Wagner Bonat wrote:
Dear,
I have to compute the trace of a product between four matrices. For
example, I know the matrices Wi, Wj and C, I need to compute this
-trace(Wi%*%C^-1%*%Wj%*%C^-1)
I would like to avoid compute
Hi Jeff an many thank's for your time.
I meant that it was easy as in not requiring som many steps...
I have managed to get it to run and it has solved my problem perfectly. Thank
you for all your tips and instructions! Up until now, I have used excel for all
problems similar to this one and on
TKS , but i still have a question that maybe i can write a new S3 method for +,
but how can i create a new operator which can pass one param?
becasue + is far away from ++ to let me know that 2 will be 3.
So, it's still a question..
--
PO SU
mail: desolato...@163.com
Majored in Statisti
It's a good way to use RF OOS, but it's not my needing, actually, i want is
there exists a way to write a %++% form function that can pass one param to it?
So i can use 1%++% to get 2 ,a<-2 , a%++% to get a<-3 .
It seems that the operator overwrite system in R, must pass two params. Is it
tru
Thanks Jim,
Sorry for the confusion. Is there a way to plot the hexbin using the colors
generated based on the sums of the values of the points at each hexbin? My
problem is not so much about the use of a color scale as it is for Hexbin to
display the sum of the bins rather than the count.
Tha
> On 19 Oct 2014, at 19:00 , Spencer Graves
> wrote:
>
> On 10/19/2014 8:42 AM, peter dalgaard wrote:
>>> On 19 Oct 2014, at 16:43 , Wagner Bonat wrote:
>>>
>>> Dear,
>>>
>>> I have to compute the trace of a product between four matrices. For
>>> example, I know the matrices Wi, Wj and C, I
Dear useRs,
I have the following dataset.
> dput(EB)
c(77.724, 76.708, 84.836, 85.09, 118.11, 65.024, 121.412, 63.5, 102.87, 81.3,
108.7, 110.7, 71.9, 42.2, 101, 151.4, 94, 112, 48, 73.4, 76.6, 62.2, 59.4,
114.3, 214.3, 110.5, 46, 84.7, 128.1, 45.2, 109.5, 102.3, 77.5, 61, 97.3, 78,
142, 88.2, 5
I figure out a way to display the hexbins color coded proportional to a third
attribute of the points falling on a given hexbin. I share it for future
reference or in case anyone has a way to improve it.
Cheers
C
library(plotrix)
library(hexbin)
#creates a
CRAN (and crantastic) updates this week
New packages
* bio3d (2.1-1)
Maintainer: Barry Grant
Author(s): Barry Grant, Xin-Qiu Yao, Lars Skjaerven, Julien Ide
License: GPL (>= 2)
http://crantastic.org/packages/bio3d
Utilities to process, organize and explore protein structur
Dear expeRts,
I want to read a a.tif file into R.
When i try this:
readGDAL("a.tif"), i get the following error:
a.tif has GDAL driver GTiff
and has 7200 rows and 7200 columns
error: can't allocate 395.5 mb vector
but i can GDAL.open("a.tif") it.
SO what's wrong with readGDAL?
--
Dear expeRts,
I am fammilar with matlab , i want to call some r codes from it , what can i
refer?
I tried R.matlab. But it seems can't work well. so, do you have any other
suggestions?
--
PO SU
mail: desolato...@163.com
Majored in Statistics from SJTU
_
On Oct 19, 2014 7:33 PM, "PO SU" wrote:
>
>
>
> Dear expeRts,
>I am fammilar with matlab , i want to call some r codes from it , what
can i refer?
> I tried R.matlab. But it seems can't work well.
Correct, R.matlab can only be used to call MATLAB from R, but not the other
way around.
I'll l
What's wrong is that readGDAL tries to allocate all the memory
required and build an object to essentially replace the file, and your
machine cannot provide sufficient resources for that. GDAL.open
provides an open connnection to the file that can be queried in
different ways to read parts of the f
To Users of Excel:
Following advice from Brian and Markus, I created an RMarkdown "vignette"
that shows an example of how the pasteFromExcel function in the excelRio
package on github could be used by an actuary to transfer a triangle from
Excel to R. See today's post at http://trinostics.blogspot
How to deal with the analysis of 2 missing observations in case of Latin
square design
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