Displaying 20 results from an estimated 800 matches similar to: "User error in calling predict/model.frame"
2008 Aug 18
7
ATI (rv350) + open-source driver + wine gaming issues
Hello everyone. I seem to have a bit of a problem running some 3D accelerated games under wine, while using the open-source ATI Radeon driver. My graphics card is Radeon 9700, and the open-source drivers overall work much better than the proprietary fglrx.
The fglrx driver allows me (in most cases) to run games like Temple of Elemental Evil (particularily) or Morrowind normally, but I can't
2006 Mar 30
3
access list component names with lapply
I have a question regarding accessing the names of list
components when applying a function with lapply.
Here is an example that demonstrates what I'd like to do.
I have a list like this one:
mylist <- list(a=letters[1:10], b=letters[10:1], c=letters[1:3])
Now I would like to append the names of the list components to their
corresponding vectors with the c() function. I thought this
2006 May 06
2
regular expression change in R version 2.3.0?
The interpretation of regular expressions with repetition
quantifiers in the 'gregexpr' function seems to have changed
between R Version 2.2.0 and 2.3.0. The 'gsub' function, however,
gives the same results in R Versions 2.2.0 and 2.3.0. Below is
an example that demonstrates the version differences of the
'gregexpr' function. I am not sure whether this new behavior
is
2009 Nov 22
1
transferring SIP call: no voice
I'm trying to connect a sip call from sipgate to Asterisk A to Asterisk
B. Both are behind NAT, but port forwarded. I get the connection, but no
voice - either in or out.
I can call on SIP from A to B (and from B to A). Do it all the time.
Asterisk A receives SIP calls from Junction and Teliax.
CLI on A looks right:
== Using SIP RTP TOS bits 184
== Using SIP RTP CoS mark 5
==
2010 Jun 02
8
bind select data frames
Dear group,
Here is my environment:
> ls()
[1] "DailyPL100419" "DailyPL100420" "DailyPL100421" "dd" "i"
"l" "PLglobal" "Pos100416" "Pos100419" "Pos100420"
"Pos100421" "position"
[13] "result" "sel"
2008 Jun 20
1
Unexpected Behavior (potentially) in t.test
Greetings,
I have stumbled across some unexpected behavior (potential a bug) in, what I
suspect to be R's (2.6.2 on Ubuntu Linux) t.test function; then again the
problem may exist in my code. I have shutdown R and started it back up,
re-run the code and re-experienced the error. I have searched on Google for
the abnormal termination error message "(stderr < 10 * .Machine$double.eps *
2010 Dec 10
1
1.6.2.14 > 1.6.2.15: blind transfer works but not Xfer on aastra
Upgraded from 16.2.14 to 1.6.2.15 on Fedora 13, with aastra 9133i and 57i.
On 9133i and 57i:
#<extension># works for a blind transfer.
Xfer<extension>Xfer doesn't!
All this worked on 1.6.2.14.
Nothing useful on cli, verbose 3, DEBUG. Here extension 169 answers an
outside call, and tries to transfer it to 145 using the Xfer button:
-- SIP/169-0000009c answered
2010 Jan 14
5
Better way than an ifelse statement?
Hello All,
I am trying to create a column of weights based off of factor levels
from another column. I am using the weights to calculate L scores.
Here is an example where the first column are scores, the second is my
"factor" and the third I want to be a column of weights. I can do
what I want with an ifelse statement (see below), but I am wondering
if anyone knows of a cleaner way
2007 Jun 14
4
question about formula for lm
Dear all;
Is there any way to make this to work?:
.x<-rnorm(50,10,3)
.y<-.x+rnorm(50,0,1)
X<-data.frame(.x,.y)
colnames(X)<-c("Xvar","Yvar")
Ytext<-"Yvar"
lm(Ytext~Xvar,data=X) # doesn't run
lm(Yvar~Xvar,data=X) # does run
The main idea is to use Ytext as input in a function, so you just type
"Yvar" and the model should fit....
2009 Apr 21
6
Sampling in R
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2005 Jul 05
1
by (tapply) and for loop differences
I am getting a difference in results when running some analysis using by and
tapply compare to using a for loop. I've tried searching the web but had no
luck with the keywords I used.
I've attached a simple example below to illustrates my problem. I get a
difference in the mean of yvar, diff and the p-value using tapply & by
compared to a for loop. I cannot see what I am doing wrong.
2011 Feb 25
1
speed up process
Dear users,
I have a double for loop that does exactly what I want, but is quite
slow. It is not so much with this simplified example, but IRL it is slow.
Can anyone help me improve it?
The data and code for foo_reg() are available at the end of the email; I
preferred going directly into the problematic part.
Here is the code (I tried to simplify it but I cannot do it too much or
else it
2019 May 25
3
Increasing number of observations worsen the regression model
I have the following code:
```
rm(list=ls())
N = 30000
xvar <- runif(N, -10, 10)
e <- rnorm(N, mean=0, sd=1)
yvar <- 1 + 2*xvar + e
plot(xvar,yvar)
lmMod <- lm(yvar~xvar)
print(summary(lmMod))
domain <- seq(min(xvar), max(xvar))??? # define a vector of x values to
feed into model
lines(domain, predict(lmMod, newdata = data.frame(xvar=domain)))??? #
add regression line, using
2012 Aug 11
1
using eval to handle column names in function calling scatterplot graph function
I am running R version 2.15.1 in Windows XP
I am having problems with a function I'm trying to create to:
1. subset a data.frame based on function arguments (colname & parmname)
2. rename the PARMVALUE column in the data.frame based on function
argument (xvar)
3. generate charts
plotvar <- function(parentdf,colname, parmname,xvar,yvar ){
subdf <-
2003 Jan 22
1
something wrong when using pspline in clogit?
Dear R users:
I am not entirely convinced that clogit gives me the correct result when I
use pspline() and maybe you could help correct me here.
When I add a constant to my covariate I expect only the intercept to change,
but not the coefficients. This is true (in clogit) when I assume a linear in
the logit model, but the same does not happen when I use pspline().
If I did something similar
2011 Apr 01
3
programming: telling a function where to look for the entered variables
Hi there,
Could someone help me with the following programming problem..?
I have written a function that works for my intended purpose, but it
is quite closely tied to a particular dataframe and the names of the
variables in this dataframe. However, I'd like to use the same
function for different dataframes and variables. My problem is that
I'm not quite sure how to tell my function in
2007 Nov 15
1
Writing a helper function that takes in the dataframe and variable names and then does a subset and plot
Hi,
I have a large dataframe than I'm writing functions to explore, and to
reduce cut and paste I'm trying to write a function that does a subset
and then a plot.
Firstly, I can write a wrapper around a plot:
plotwithfits <- function(formula, data, xylabels=c('','')) {
xyplot(formula, data, panel =
function(x,y, ...) {
panel.xyplot(x,y,
2003 Oct 27
3
Connecting without smbpasswd file
Hi;
We've recently upgraded from Samba 1.7 to Samba 2.2.8 and we're using Samba
to allow our users to connect to their Unix home directories from their
PC's. Under 1.7 users were able to connect by mapping a drive from windows
explorer and entering their unix username and password. Now, when we do
this we get a "Incorrect password or Unknown username" error message.
2011 Mar 05
2
please help ! label selected data points in huge number of data points potentially as high as 50, 000 !
Dear All
I am reposting because I my problem is real issue and I have been working on
this. I know this might be simple to those who know it ! Anyway I need help
!
Let me clear my point. I have huge number of datapoints plotted using either
base plot function or xyplot in lattice (I have preference to use lattice).
name xvar p
1 M1 1 0.107983837
2 M2 11
2005 Dec 26
4
lme X lmer results
Hi,
this is not a new doubt, but is a doubt that I cant find a good response.
Look this output:
> m.lme <- lme(Yvar~Xvar,random=~1|Plot1/Plot2/Plot3)
> anova(m.lme)
numDF denDF F-value p-value
(Intercept) 1 860 210.2457 <.0001
Xvar 1 2 1.2352 0.3821
> summary(m.lme)
Linear mixed-effects model fit by REML
Data: NULL
AIC BIC