Displaying 20 results from an estimated 5000 matches similar to: "question for IF ELSE usage"
2005 Oct 18
4
Ways to speed up R code?
Hi R-users:
Yesterday I ran a R code for 9 hours and it did not show any sign to
stop. Then I interrupted it and found it had completed 82.5%.
This morning I decided to wait for another 11 hours to see what will
happen. Wait a minute, I heard that transforming data.frame to matrix
will make R code faster. Then I made the modification in my R code.
Oooh, the new code finished within 30 minutes!!
2005 Sep 12
1
help for linear-circular correlation
Hi R-profs,
Maybe my question is a little off topic. Could any one tell me how to
calculate a linear-circular correlation coefficient and its p-values?
I had a quick look at circular and CircStats packages and did not find
the related function.
Thanks for any kindly help.
Xiaohua
--
Xiaohua Dai, Dr.
Centre for Systems Research, Durban Institute of Technology
P.O.Box 953, Durban 4000, South
2005 Jun 21
1
How to plot circular data in the directions of 0, 0.5pi, pi and 1.5pi
Hi R users,
I use plot.circular(rad, stack=T,bins=4) and could just obtain the four
stacks in the directions of 45, 135, 225 and 315 degrees. But I want them in
0, 90, 180 and 270 degrees. Is there any parameter or any other function to
make it? Thanks for helping a R beginner.
--
Xiaohua Dai, Dr.
--------------------------------------------------------------------------------
Centre for
2006 May 12
1
[ESRI-L] outline polygons of point clumps
Sorry, I did not make my question clear. Since I have a point theme
with many points, some of them may clump together. the problems here
are:
1. how to find clumps in a point theme?
2. the convex-hull extension I found only deal with all the points in
a theme at each time? how to make each convex hull around each point
clump automatically?
Thanks.
Xiaohua
On 5/12/06, Bob Booth <bbooth
2005 Aug 03
1
help for cell2nb and queencell in spdep package
Dear Dr. Bivand and R-users,
I have a 5 by 5 grid, say, location[1:5,1:5], and I want to know the
indices of 8 neighbours of each cell. For example, for location[2,2], its
neighbour coordinates are [1,1:3], [2,1], [2,3] and [3,1:3]. Sometimes I
also need to remove edge effects (torus = TRUE).
I have tried "cell2nb" function in your spdep package. Here's my example:
> neigh
2006 Feb 15
1
Multiple comparison for circular data
Hi All,
Does anyone know how to compare the means of several circular-data
samplings? Any related websites, references and softwares?
Thanks
Xiaohua
--
Xiaohua Dai, Dr.
[[alternative HTML version deleted]]
2005 Jun 30
3
[OT] gmail filter for R-help and R-devel lists
This is slightly off-topic but I would be interested in whether anyone
has succeeded in creating a filter expression for Google's gmail
system that will select messages sent through the R-help and R-devel
lists. It seems as if it should be easy to select on '[R]' or '[Rd]'
in the subject line but I haven't been able to work out the exact
syntax that would do this and not
2005 Jul 06
2
How to sample x-y coordinates from GIS files
Hi Gurus!
I have a job that is to get randomly samples from point-based GIS data (sp
called shape GIS files) under the total sum resctricted.
For example, I would like to take random smaples under the 1000 persons in
each city.
The randomly sampled persons should not be over 1000 any case.
Thank you in advance,
--
Kum-Hoe Hwang, Ph.D.
Phone : 82-31-250-3283
Email : phdhwang@gmail.com
2005 Jul 13
5
maps drawing
Hello,
is there a package in R that would allow map drawing:
coastlines, country/state boundaries, maybe
topography,
rivers etc?
Thanks for any guidance,
Mark
2005 Oct 17
2
how to find indices of particular array elements
Dear R helpers,
I have a largish matrix (1300 x 1300) and I wish to find the row and column
numbers that identify particular elements whose values I know in advance
(for example, the row and column numbers for the maximum value of the
matrix).
I have looked in the help manual and found the functions 'row' and 'col' for
finding the indices of a matrix. But, I can't figure out
2006 Jun 29
2
How to use a for loop to generate two sequences
Hi R users,
Hope the question is not too simple:
How to use a for loop to generate two lists as below:
testlist <- list(test1, test2, ..., test1000)
stringlist <- list("test1","test2",...,"test1000")
Thanks
Xiaohua
2006 Jun 14
1
set.seed
Hi R users,
Sorry for a simple question:
I found different people use different i in set.seed(i), are there any
rules to choose an i or one can choose as he likes?
Thanks
Xiaohua
2005 Oct 13
3
How to generate for one vector matrix
Is there any routine to generate for one vector matrix.
If I have X I want to generate start from zero to maximum value each vector.
For example, I have a vector x = (4,2,3,1,4)
I want to generate n=6 times, for 4, start 0 to 4, then 2 start 0 to 2, ect.
The result something like this:
generate(x,n=6)
1,1,2,1,4
1,2,3,0,3
4,0,1,1,1
3,1,0,1,4
0,0,3,0,0
4,1,3,0,4
Could anyone help me. Thanks.
2006 May 11
1
package update problem
Hi all,
>From late April, everytime when I update my packages, the package
"gap" is always on the list of "packages to be updated". I try to
download and install the gap zip file from CRAN. However, the same
problem still remains. No such problem for other packages.
> Sys.info()
sysname release
2009 Feb 24
1
R parser for If-else
Hi list,
I don't know if somebody has spent a lot of time debugging strange
problems with if else positioning - the parser seems to recognize only
the syntax bellow - this is the only way of making these pieces of
code to work.
As far as i'm concerned, no examples were available (it would be so
awesome to have them in the introductory manual!)
#Try to change the placement of the
2016 Aug 26
0
[PATCH v8 14/18] ARM: STi: DT: STiH407: Add uniperif player dt nodes
This patch adds the DT nodes for the uniperif player
IP blocks found on STiH407 family silicon.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen at st.com>
Signed-off-by: Peter Griffin <peter.griffin at linaro.org>
---
arch/arm/boot/dts/stih407-family.dtsi | 76 +++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/arch/arm/boot/dts/stih407-family.dtsi
2016 Aug 30
1
[PATCH v8 14/18] ARM: STi: DT: STiH407: Add uniperif player dt nodes
On Fri, 26 Aug 2016, Peter Griffin wrote:
> This patch adds the DT nodes for the uniperif player
> IP blocks found on STiH407 family silicon.
>
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen at st.com>
> Signed-off-by: Peter Griffin <peter.griffin at linaro.org>
> ---
> arch/arm/boot/dts/stih407-family.dtsi | 76 +++++++++++++++++++++++++++++++++++
> 1
2016 Aug 30
1
[PATCH v8 14/18] ARM: STi: DT: STiH407: Add uniperif player dt nodes
On Fri, 26 Aug 2016, Peter Griffin wrote:
> This patch adds the DT nodes for the uniperif player
> IP blocks found on STiH407 family silicon.
>
> Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen at st.com>
> Signed-off-by: Peter Griffin <peter.griffin at linaro.org>
> ---
> arch/arm/boot/dts/stih407-family.dtsi | 76 +++++++++++++++++++++++++++++++++++
> 1
2016 Aug 26
0
[PATCH v8 16/18] ARM: DT: STi: stihxxx-b2120: Add DT nodes for STi audio card
This patch enables the uniperif players 2 & 3 for b2120 boards
and also adds the "simple-audio-card" device node to interconnect
the SoC sound device and the codec.
Signed-off-by: Arnaud Pouliquen <arnaud.pouliquen at st.com>
Signed-off-by: Peter Griffin <peter.griffin at linaro.org>
---
arch/arm/boot/dts/stihxxx-b2120.dtsi | 45 ++++++++++++++++++++++++++++++++++++
1
2005 Jun 30
5
答复: fail in adding library in new version.
Dear Gabor,
Thank your for helping me so much!
I have loaded R the newest version 2.1.1. Then I setup it in the path of D:\program files\R\
1. unpack tools.zip into c:\cygwin
2. install Active perl in c:\Perl
3. install the mingw32 in c:\mingwin
4. add "c:\cygwin; c:\mingwin\bin" in "Control Panel -> System -> Advanced -> Environment Variables -> Path ->