similar to: Singular Matrix 'a' in solve

I am a student who is doing empirical work for his thesis and trying to switch to R. I am familiar with Stata, and at the moment I am trying to replicate some of my previous work. I have a large unbalanced panel data set, observations for different countries between 1970 and 2007. My dependent variable is an overdispersed count. So far I have used fixed-effects negative binomial regression,

I have a, no doubt, simple question. I wish to write a function such that a <- 9 b <- 10 changer _ function(x,y) { if (y>x){ x <<- Y+1}} Of course there are easier ways to accomplish the task above, but I am more interested in how to have the "x <<- Y+1" part of the function to change x in place for purposes of a much larger function. I have been wrestling with

Hay, My name is Luciano and i am linving from Brazil. Im my business i have a Red Hat Linux box version 7.1. My work have a Windows NT and 2000 servers and i must be browse my computer in my network. I printed the "Configuring SAMBA" and configured my Linux Box, but the Windows PC in my work don?t see me. I already using the Internet with my work proxy, and get my messages in my

Dear R-help, I have an xts data set that i have subset by date. now it contains a date-time-stamp, and two columns (price and volume traded): my objective is to create tables of volume traded at a price - and i've been successfully using aggregate to do so in interactive use. say the data looks as follows: px_ym1 vol_ym1 2012-06-01 09:37:00 97.91 437 2012-06-01

Dear all: I have found a big bug on xen concerning time virtualization. Please let me show you the whole process: 1 Phenomenon when I run a JVM based program in IE browser in my Virtual Machine, I have found clearly that time at the right bottom corner in my VM gets more slower and slower. I studied the bug deeply, and found something below. 2 Xen vmx_vmexit_handler --> ......... -->

Signed-off-by: Scott Seago <sseago at redhat.com> --- AUTHORS | 17 ++++++ README | 10 +++ conf/ovirt-agent | 12 ++++ conf/ovirt-db-omatic | 12 ++++ conf/ovirt-host-browser | 12 ++++

When I try the command nmblookup -M TESTGROUP querying TESTGROUP on 192.168.255.255 name_query failed to find name TESTGROUP #1d My /etc/hosts file is # Do not remove the following line, or various programs # that require network functionality will fail. 127.0.0.1 localhost localhost.localdomain 192.168.100.101 testpc 192.168.100.100 linuxserver /etc/samba/lmhosts is 127.0.0.1 localhost