search for: barrowman

Displaying 4 results from an estimated 4 matches for "barrowman".

2004 May 27
2
axis.POSIXct: Datetime data and plotting
...te that Eastern Standard Time is 5 hours behind UTC, so 19:00 EST is 00:00 UTC. But is there any easy way to avoid this problem? It is confusing and inconvenient that axis.POSIXct(1,d,format=f) and axis.POSIXct(3,at=d,format=f) give seemingly contradictory scales. Many thanks for any help! Nick Barrowman, Ph.D. Chief Biostatistician, Chalmers Research Group Children's Hospital of Eastern Ontario Research Institute 401 Smyth Road, Ottawa, Ontario, K1H 8L1, Canada Tel (613) 737-7600 ext. 3971 Fax (613) 738-4800 Email nbarrowman at cheo.on.ca URL www.chalmersresearch.com > version...
2001 Jul 06
1
output of system() call not returned in Win98
...nd R 1.2.2 this command works: system("command.com /c dir",show=T,invisible=T) On another machine also running Win98 and R 1.2.2 it does not. Nothing appears. On another machine running Win98 and R 1.3.0 it also does not work. Is this a known problem? Many thanks for any help. Nick Barrowman, Ph.D. Thomas C. Chalmers Centre for Systematic Reviews Children's Hospital of Eastern Ontario Research Institute 401 Smyth Road, Ottawa, Ontario, K1H 8L1, Canada Phone:(613) 738-3971 // Fax:(613) 738-4869 E-mail: nbarrowman at cheo.on.ca -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-....
2001 Jul 06
0
Summary: output of system() call not returned in Win98
...blem is not with R. For what it is > worth, it works on my Windows 98 machine under 1.3.0. Based on the confusing results I alluded to above, I think Prof. Ripley may be correct. I'll summarize to the list once I learn more. Thanks again to both respondents for their generous help. Nick Barrowman, Ph.D. Thomas C. Chalmers Centre for Systematic Reviews Children's Hospital of Eastern Ontario Research Institute 401 Smyth Road, Ottawa, Ontario, K1H 8L1, Canada Phone:(613) 738-3971 // Fax:(613) 738-4869 E-mail: nbarrowman at cheo.on.ca -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-....
2005 Jan 25
1
Threshhold Models in gnlm
Hello, I am interested in fitting a generalized nonlinear regression (gnlr) model with negative binomial errors. I have found Jim Lindsay's package that will do gnlr, but I have having trouble with the particular model I am interested in fitting. It is a threshhold model, where below a certain value of one of the parameters being fitted, the model changes. Here is a sample: Cones: