search for: maladmin

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2007 Sep 05
2
Multiple xyplots
Hi everyone, I'm hoping you can give me some pointers. I have a requirement to draw multiple (103) xy line plots onto one output device. Ideally the plots should be displayed in a hexagonal grid (example at www.maladmin.com/example.jpg). I can calculate the locations for each waveform but am wondering how to create multiple plotting areas. I have come accross references to a package grid (which doesn't seem to be in my CRAN mirror probability.ca) and lattice but I'm not sure if I'm on the correct l...
2016 Apr 21
2
installation problem on Ubuntu
I was able to install the curl library with no problems. However, when I tried to install ggplot (install.packages("ggplot2")), I got the same message as earlier, that R can't load internet.so. Thanks for your help! On Wed, Apr 20, 2016 at 1:24 PM, Tom Wright <tom at maladmin.com> wrote: > apt-get install curl libcurl4-openssl-dev > > On Wed, 2016-04-20 at 09:36 -0700, Paul Tremblay wrote: > > I needed to update R so I could install ggplot. I am running Ubuntu > 12.04. > > I cannot upgrade Ubuntu because I am using a work computer. > >...
2005 Nov 30
2
OT: Statistics question
I apologise for asking this question here but I am hoping that someone can either give me direct guidance and/or point me to a better group for this type of disucssion. I have what I feel should be a fairly simple problem but which my limited stats knowledge can't answer. I have two overlapping distributions (both normal) and I want to answer the question how do I calculate the cut-off value
2016 Apr 22
0
installation problem on Ubuntu
...> tried to install ggplot (install.packages("ggplot2")), I got the same > message as earlier, that R can't load internet.so. Is the libcurl directory in your search path? David. > > Thanks for your help! > > On Wed, Apr 20, 2016 at 1:24 PM, Tom Wright <tom at maladmin.com> wrote: > >> apt-get install curl libcurl4-openssl-dev >> >> On Wed, 2016-04-20 at 09:36 -0700, Paul Tremblay wrote: >>> I needed to update R so I could install ggplot. I am running Ubuntu >> 12.04. >>> I cannot upgrade Ubuntu because I am using...
2016 Apr 22
1
installation problem on Ubuntu
...ckages("ggplot2")), I got the same > > message as earlier, that R can't load internet.so. > > Is the libcurl directory in your search path? > > David. > > > > Thanks for your help! > > > > On Wed, Apr 20, 2016 at 1:24 PM, Tom Wright <tom at maladmin.com> wrote: > > > >> apt-get install curl libcurl4-openssl-dev > >> > >> On Wed, 2016-04-20 at 09:36 -0700, Paul Tremblay wrote: > >>> I needed to update R so I could install ggplot. I am running Ubuntu > >> 12.04. > >>> I cannot...
2006 Mar 15
7
matrix indexing
Can someone please give me a pointer here. I have two matrices matA A B C 1 5 2 4 2 2 4 3 3 1 2 4 matB A B C 1 TRUE FALSE TRUE 2 FALSE TRUE TRUE 3 FALSE FALSE FALSE how do I extract all the values from matA where the coresponding entry in matB == TRUE (or FALSE), perferably in vector form. Many thanks tom
2005 Sep 15
3
newbie question
Can someone tell me how I create a vector of numbers where the step isn't 1? i.e. x<-(0.0,0.5,1.0,1.5....) Thanks tom
2005 Nov 15
1
strsplit
I'm stuck on what I feel should be a minor problem. I have a dataseries obtained from a MS Access database that consists of a series of numbers seperated by carridge returns (\r) Currently this data is in R as mode numeric??? I want to separate this into a vector of the componant numbers. Perhaps a little code will help describe what I've got here!! library(rodbc) s_sql<-'SELECT
2006 May 25
1
understanding DWT
Can someone please help me understand the examples given in the dwt function of the waveslim library library(waveslim) ?dwt I'm having a problem understanding these lines. I assume they are required because of how the algorythm deals with the signal bounderies. Am I correct in thinking that for wavelets of scale 1 and 2, the coefiecints need to be shifted by 2 places, for scale 3 and 4 shift
2005 Oct 27
1
tree widget question
I'm trying to create an app using TclTk and R Can someone please explain how I bind a click event to the tree widget (http://bioinf.wehi.edu.au/~wettenhall/RTclTkExamples/TreeWidget.html) Ideally I'd like to bind to particular elements in the tree but tkbind doesnt seem to work. thanks tom
2005 Jul 28
2
problem with an IF statement?
Can somebody please take a look at this and tell me whats going wrong? It seems to be parsing wronly around the 'if' statement and gives me a directory listing. Thanks in advance Tom N.B. datan is an invented dataset xvals<-c(1,0.4,0.2) datan<-data.frame(s1=c(3,4,5),s2=c(5,5,5),s3=c(21,55,34),s4=c(5,3,2)) datan$sint<-NA datan$sgrad<-NA for(icount in 1:dim(datan)[1]) {
2005 Nov 15
2
Subtracting timeseries objects
Sorry to keep posting but I want to do this right and I'm hoping for some pointers I now have two time series objects which I need to subtract. Unfortunatly the two series dont have the same sample rates. When I try to subtract them avgSub<-avg1-avg2 The time series object is clever enough to object. So I guess I need to write a function for subtraction of the time series objects which
2005 Sep 19
3
waveform filtering
I'm not an engineer so I hope I'm using the correct terminology here. I have a recorded waveform that I want to apply low and high pass filters too, are tehre already R functions existing to do this or am I going to have to program my own? thanks for any pointers tom
2005 Nov 04
1
problem in waveslim library?
This code consistenly segfaults for me. Can someone please take a look and tell me if the problem is due to something I am doing or is there a problems with the dwt (idwt) functions in the waveslim library. Thanks tom library(waveslim)
2005 Sep 27
4
dynamic lists (data frames?)
Can someone please show me what I need to get something like this to work for(a in c(1:5)){ data$a<-c(a:10) } so that i end up with a structure data$1<-[1,2,3,4,5,6,7,8,9,10] data$2<-[2,3,4,5,67,8,9,10] data$3<-[3,4,5,67,8,9,10] data$4<-[4,5,67,8,9,10] data$5<-[5,67,8,9,10] thanks loads Tom
2006 May 10
2
problems with optimize (again)
Can someone please explain what the $minimum result of the optimize function actually is? I'm trying to optimize the function: fitIT<-function(ampFac,ts_wave1,ts_template){ template<-stretchWaveTime(ts_template,ampFac) fit<-calcFit(ts_wave1,template) return(fit) } with >optimize(f=fitIT,interval=c(0.5,4),ts_wave1=test.data[,1],ts_template=test.data[,1]) $minimum [1]
2006 Jan 13
2
find mean of a list of timeseries
Can someone please give me a clue how to 're'write this so I dont need to use loops. a<-ts(matrix(c(1,1,1,10,10,10,20,20,20),nrow=3),names=c('var1','var2','var3')) b<-ts(matrix(c(2,2,2,11,11,11,21,21,21),nrow=3),names=c('var1','var2','var3'))
2006 Jan 17
6
For each element in vector do...
Dear R useRs, I have a vector with positive and negative numbers: A=c(0,1,2,3,0,4,5) Now if i-th element in vector A is > 0, then i-th element in vector B is a+1 else i-th element in vector b=a (or 0) vector A: 0 1 2 3 0 4 5 vector B: 0 2 3 4 0 5 6 What's the right way to do this. I still have some problems with for and if statements... Cheers, Andrej
2005 Nov 16
1
RODBC and Very long field lengths
I'm having a small problem using RODBC. I'm trying to retrieve a string from a very long memo field (512*20*9=9360 characters = 74880 bytes) in an MSAccess database. It appears that RODBC set a maximum buffer size for a single column of 65535 bytes. ########## cut from RODBC.c ########## } else { /* transfer as character */ int datalen = thisHandle->ColData[i].ColSize; if
2005 Dec 29
1
use of tapply?
I'm still learning how to program with R and I was hoping someone could take the time to show me how I can rewrite this code? Many thanks Tom data.intersects<-data.frame( x=c(0.230,0.411,0.477,0.241,0.552,0.230), y=c(0.119,0.515,0.261,0.431,0.304,0.389), angle=vector(length=6), length=vector(length=6),