Hi,
A error message arose while I was trying to fit a ordinal model with lrm() I am
using R 2.8 with Design package.
Here is a small set of mydata:
RC RS Sex CovACovBCovCCovDCovE
2 1 0 1 1 0 -0.0055752802
2 1 0
The idea of estimating 7 parameters from 11 cases using mostly binary
variables just seems begging for a singular matrix.
On Sep 4, 2009, at 3:59 PM, Ping-Hsun Hsieh wrote:
Hi,
A error message arose while I was trying to fit a ordinal model with
lrm() I am using R 2.8 with Design package.
Ping-Hsun Hsieh wrote:
Hi,
A error message arose while I was trying to fit a ordinal model with lrm() I am
using R 2.8 with Design package.
Here is a small set of mydata:
RC RS Sex CovACovBCovCCovDCovE
2 1 0 1 1 0 -0.005575280
annie Zhang wrote:
Hi, Frank,
I met the same problem. My data does not have NA, when I run
fit - lrm(Y_t~.,data=X)
The error message is:
singular information matrix in lrm.fit (rank= 35 ). Offending variable(s):
X35
Error in j:(j + params[i] - 1) : NA/NaN argument
How can I avoid this?
Hi, Frank,
I met the same problem. My data does not have NA, when I run
fit - lrm(Y_t~.,data=X)
The error message is:
singular information matrix in lrm.fit (rank= 35 ). Offending variable(s):
X35
Error in j:(j + params[i] - 1) : NA/NaN argument
How can I avoid this?
Thank you,
Annie
On Fri,
Thank you for your reply, it helped. That thread is about glm, I take it that
lrm behaves in the same way?!?
See:
https://stat.ethz.ch/pipermail/r-help/2009-July/204192.html
and also other posts in that thread.
--
View this message in context:
Presumably the same idea would apply to lrm if
appropriately adapted.
On Sun, Aug 30, 2009 at 5:19 AM, loch1l...@gmx.li wrote:
Thank you for your reply, it helped. That thread is about glm, I take it that
lrm behaves in the same way?!?
See:
Hello everybody,
I am trying to do a logistic regression model with lrm() from the design
package. I am comparing to groups with different medical outcome which can
either be good or bad. In the help file it says that lrm codes al
responses to 0,1,2,3, etc. internally and does so in alphabetical
See:
https://stat.ethz.ch/pipermail/r-help/2009-July/204192.html
and also other posts in that thread.
On Sat, Aug 29, 2009 at 6:02 PM, loch1l...@gmx.li wrote:
Hello everybody,
I am trying to do a logistic regression model with lrm() from the design
package. I am comparing to groups with
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Hi,
This concerns lrm in the Design package, which I need for the clustered
errors option with panel data.
I have created a variable (using sign()) that has values -1, 0, and 1
(and some NAs). call this variable x3. lrm does not like
t = lrm(y ~ x1 + x2 + I(x3==-1) + I(x3==1),
James Fearon wrote:
Hi,
This concerns lrm in the Design package, which I need for the clustered
errors option with panel data.
I have created a variable (using sign()) that has values -1, 0, and 1
(and some NAs). call this variable x3. lrm does not like
t = lrm(y ~ x1 + x2 + I(x3==-1) +
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