similar to: Fwd: cannot install the package RMySQL

Displaying 20 results from an estimated 200 matches similar to: "Fwd: cannot install the package RMySQL"

2008 Jul 03
2
what can we do when R gives no response
Hi, dear R experts , I am new. I met this problem when I am trying to learn how to use the nlminb() function. I tried the example which the document provides ( as the following code ) and R gives no response . I don't know whether it is running or not and it takes a very long time but still output nothing so I just close the session window. my question is is there any method
2008 Jun 23
3
Simulating Gaussian Mixture Models
Hi, Is there any package that I can use to simulate the Gaussian Mixture Model , which is a mixture modeling method that is widely used in statistical learning theory. I know there is a mclust, however, I think it is a little bit different from my problem. Thanks very much.. regards. -------------------------- Peng Jiang ?? Ph.D. Candidate Antai College of Economics &
2008 Sep 16
5
How to find the index
Dear R experts, i have a vector z , i have to do something after z is sorted. how can i find the original index, i.e., before sorting, of a certain element in the sorted vector . thanks in advance regards ----------------------------------------------- Peng Jiang ?? ,Ph.D. Candidate Antai College of Economics & Management ???????? Department of Mathematics ??? Shanghai Jiaotong
2008 Jul 08
1
about EM algorithm
Hi, dear R experts . is there any package contain an universal EM procedure, that is , for arbitrary d.f. , not just the one in mclust . thanks in advance best regards ----------------------------------------------- Peng Jiang ?? ,Ph.D. Candidate Antai College of Economics & Management ???????? Department of Mathematics ??? Shanghai Jiaotong University (Minhang Campus) 800 Dongchuan Road
2008 Jun 24
2
How to solve empty cells in the contingency table?
Hi,Dear all R experts, I am trying to do the 2-way contingency table analysis by fitting the loglinear models. However, I found my table has several empty cells which are theoretically missing values.I have no idea of how to solve them coz we cannot compute the simulated p-value with zero marginals.Does someone have some suggestions? Please help me out, thanks a lot! Cheers, Yan
2008 Jun 27
1
binomial distribution
Hi all, I am a biological student and need your help in statistics. I have two sets of binomial distributed numbers: {a1, a2, ..., an} and {b1, b2, ..., bn}. How can I get the distribution of the ratios of the two sets of numbers {a1/b1, a2/b2, ..., an/bn}? Is there a formula to transform the distributions? Or where I can start if I want to learn necessary techniques? Thank you a lot! xiechao
2008 Jun 28
2
String concatenation
Hi, Is the following function built in somewhere? concat = function(v) { res = "" for (i in 1:length(v)) res = paste(res,v[i],sep="") res } e.g. > concat(c("12","3","45")) [1] "12345" Cheers, Andy -- Andy Fugard, Postgraduate Research Student Psychology (Room F3), The University of Edinburgh, 7 George
2008 Jul 01
2
if one of 4 conditions is not satisfied
I'm trying to do realize the following: I have 4 condtions. If all conditions are satisfied I will paste("PASS") If any of these is not satisfied I will paste("FAIL"). But I have to paste the corresponding failure. ifelse is a good solution but for a 2 conditions. Maybe switch or something like this. Does anyone have an idea how to do? Thanks in advance. Adel -- View
2008 Nov 03
1
a nlm question
Dear R listers, I posted this problem several days ago but it seems nobody answered. I use nlm to optimize a given function ,but it always generates the following warnings " Error in nlm(foo, theta.start) : non-finite value supplied by 'nlm' " I don't know why ,can anybody give me some hints ?? thanks in advance. regards .
2008 Jun 18
3
Cluster on both categorical and numerical data
Hello there. Is there any function in R that can do cluster on a set of data that has both categorical and numerical variables? thanks. siangli
2008 Oct 30
0
a nlm() question
Dear R listers, I have a very annoying problem using nlm(). I want to find the minimizer of my target function, if written in \LaTeX is f(\mu1,\mu2,\sigma1,\sigma2) = \sum_i^n( w_ig_t(z_i) ), where g_t(z) is a pdf of bivariate normal distribution and z_i is my samples. I cannot get the estimation result generated by nlm(), and I got the following errors " Error in
2008 Nov 24
6
optimization problem
Dear list, hi ! I am a R beginner and I have a function to optimize . alpha = argmin{ f(x,alpha) } I want alpha to be in [0,1]. Is there any function that can work? I use nlm() but i can't fix the domain of alpha. thanks in advance _______________________ Jiang Peng, Ph.D. Candidate Department of Mathematics & Antai college of Economics and Management Shanghai Jiao
2008 Jul 05
5
help about random generation of a Normal distribution of several variables
Hello. Somebody knows how can I generate a set of n random vectors of a normal distribution of several variables? For example, I want to generate n=100 random vectors of two dimensions for a normal with mean c(0,1) and variance matrix: matrix(c(2,1,1,3),2,2). Thanks in advance, Arnau.
2008 Jun 30
6
Plotting three time series on the same graph
Dear R Users, I would like to plot three time series on the same graph, two axis on the left and one axis on the right. The time series that I am graphing on the left do not share a similar scale: one has a range of 1:100 and the other a range of 25000:70000. How can I display the tick marks for both on the left hand side without superimposing them, i.e. one set of tick marks in black right
2013 Nov 22
0
[LLVMdev] PrologEpilogProblems;
After PrologEpilogCodeInserter I found that the instructions that restore callee saved registers S0,S1,LR are in the wrong location ,the instructions are: %S0<def> = LD %SP, 36; mem:LD4[FixedStack2] %S1<def> = LD %SP, 40; mem:LD4[FixedStack1] %LR<def> = LD %SP, 44; mem:LD4[FixedStack0] (LR is the Return address register) the whole code of print-machineinstrs are: # After
2002 Dec 24
4
A problem about ICMP Destination Unreachable
Hello, I have installed samba in a Linux RedHat 8.0 PC in my lab as a file server. The clients of samba are PCs with MS Windows98. Now I meet some problems, I can see samba server name in Network Neighborhood, but when I click the icon, I get this error message after a long delay: Cannot link to Linuxserver(server name). And I used Ethereal to track the packets to find the problem, I found that
2004 Aug 06
1
Where can I find the implementation of function speex_encode( )
Hi, Guys I am starting looking the source code of Speex. Maybe a little silly, but I can not find the implementation of the function speex_encode(). Only something like below void speex_encode(void *state, float *in, SpeexBits *bits) { (*((SpeexMode**)state))->enc(state, in, bits); } Does that mean some of the detail implementation is embedded in lib without source code? I am new in
2014 May 24
0
My sincere apology
Dear Prof Brian Ripley: I am very sorry for that I use the unappropriate words "It's my great pleasure" when I read this mail again! I give my apology sincerely to you ,unreservedly and with my heart! You are such a warm-hearted man.And you help me to solve my problems.But owing to my poor English, I found I had made such a foolish mistake. My brain must have been stupid
2011 Jul 17
1
issues when add driverdisk to centos5.6 using NFS method
Hi, I am Ken.. I am trying to add dud(driver update disk) to centos5.6 using network method, I can successfully add dud to centos5.6 using http and ftp method, but fail when using nfs method. However those all three methods are officially supported in the centos5.6. As indicated in the centos5.6 website, we can see they not only support http, ftp, but also nfs.
2013 Dec 07
0
CFP: The 23nd International ACM Symposium on High-Performance Parallel and Distributed Computing (HPDC) 2014
**** CALL FOR PAPERS **** The 23nd International ACM Symposium on High-Performance Parallel and Distributed Computing (HPDC-2014) Vancouver, Canada - June 23-27, 2014 http://www.hpdc.org/2014 The ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC) is the