Error in lm.fit(

I am using R.2.4.1 on Windows XP 5.1 (SP 2).

I have the following line in my R code.

Analysis=anova(lm(PM ~ x))

It works the first 60 or so times it is called but
then I get the following error message.

Error in lm.fit(x, y, offset = offset, singular.ok =
singular.ok, ...) : 0 (non-NA) cases

In order to examine the input, I preceeded the call
with the following.

print(PM)
print(x)

This gave the following.

[1] 245.0 189.0 249.8 188.0 184.3 230.0 147.0 185.3
196.0 142.3 282.0 169.0
[13] 231.5 162.0 115.0 168.8 195.0 214.0 173.0 111.3
360.0 192.3 305.5 206.0
[25] 111.0 247.0 188.0 246.0 252.0 114.0

 [1] 20.00 20.00 20.00 20.00 20.00 10.00 10.00 10.00
10.00 10.00  7.50  7.50
[13]  7.50  7.50  7.50  5.00  5.00  5.00  5.00  5.00 
2.50  2.50  2.50  2.50
[25]  2.50  1.25  1.25  1.25  1.25  1.25

I would be most grateful if someone could help with
this problem.  I do not see why these input vectors
would give this error message. 

Also, is there a way to make it so the script keeps
running if it gets an error like this?

Many thanks in advance,
Peter Lauren.

Hi

r-help-bounces at r-project.org napsal dne 03.10.2007
14:56:19:

I am using R.2.4.1 on Windows XP 5.1 (SP 2).

Upgrade R. Version 2.6.0 is imminent.

I have the following line in my R code.

Analysis=anova(lm(PM ~ x))

It works the first 60 or so times it is called but
then I get the following error message.

Error in lm.fit(x, y, offset = offset, singular.ok

=

singular.ok, ...) : 0 (non-NA) cases

Somehow x or PM is without any numbers.

In order to examine the input, I preceeded the

call

with the following.

print(PM)
print(x)

Check from where you printed it. Maybe you have
these somwhere in your 
environment but actual lm is using different ones.

This gave the following.

[1] 245.0 189.0 249.8 188.0 184.3 230.0 147.0

185.3

196.0 142.3 282.0 169.0
[13] 231.5 162.0 115.0 168.8 195.0 214.0 173.0

111.3

360.0 192.3 305.5 206.0
[25] 111.0 247.0 188.0 246.0 252.0 114.0

 [1] 20.00 20.00 20.00 20.00 20.00 10.00 10.00

10.00

10.00 10.00  7.50  7.50
[13]  7.50  7.50  7.50  5.00  5.00  5.00  5.00 

5.00 

2.50  2.50  2.50  2.50
[25]  2.50  1.25  1.25  1.25  1.25  1.25

I would be most grateful if someone could help

with

this problem.  I do not see why these input

vectors

would give this error message. 

Also, is there a way to make it so the script

keeps

running if it gets an error like this?

Maybe ?try.

You did not reveal much information for anybody to
get you some help. If 
you try to construct an artificial example which
anybody can reproduce you 
would maybe find what is the problem yourself.

Regards
Petr

Many thanks in advance,
Peter Lauren.