Displaying 7 results from an estimated 7 matches for "jdrapp".
2006 Jul 09
1
Error Calculating Mean
I have a vector containing players' weights. When I enter
mode(data.linear$Weight)
"numeric" is returned.
When I type mean(data.linear$Weight)
NA is returned.
Any ideas as to why this may be the case? I am trying to calculate
this ultimately so I can superimpose a normal density line over a
histogram containing the weights?
2006 Jul 17
3
Correlation Mapping
On the cover of Zivot and Wang's Modeling Financial Time Series with S
Plus, there is a correlation plot that seems to indicate the strength
of correlation with color-coded squares, so that more highly
correlated stocks appear darker red. If anybody out there is familiar
with the book or understands what I am talking about, I am curious as
to whether or not there is a similar function in R
2006 Jul 08
2
Adding Lines to Plot
This seems like a question that I should be able to answer on my own
but after looking at the documentation I cannot seem to find the
correct method.
How do I add lines to a bar plot that extend from the vertical axis?
For example, my vertical axis is numbered in increments of 10 and I
would like these to go across the whole graph.
Also, is there a way to have R label the value of each bar so
2006 Jul 07
1
FW: Levels and GLM
...t is
technically correct to say the "mean value of the linear predictor,"
instead of "mean response".
20 lashes for me.
Max
-----Original Message-----
From: Kuhn, Max
Sent: Friday, July 07, 2006 4:11 PM
To: 'r-help at stat.math.ethz.ch'
Subject: [R] Levels and GLM
jdrapp,
By default, R fits full rank models. If you are coming from SAS, you're
probably used to less than full rank model parameterizations.
>From Section 11.1.1 of "An Introduction to R" at
http://cran.r-project.org/doc/manuals/R-intro.html#Contrasts
there is this:
"What ab...
2006 Jul 07
1
Levels and GLM
I am using the as.factor command to use with glm. When I use the command
>maj <- as.factor(data.logistic$Majors)
>maj
I receive the following output:
[1] M M N M M M M N N M M M N M M M M M M M M M M M N M N N M M N M
M N M M M M M
[40] N M N M M N M M M N M N M N M N N N M N M M M M M M N M N M M M
M M N N M M M
[79] M M M N N M M N M N M M M M M M M M M M M M M M M N M M M M M N
2006 Jul 08
1
Summary Statistics for data.frame
I apologize for my constant questions but I am new to R and trying to
gain an appreciation for its capabilities. The following task is easy
in Excel and I was hoping somebody could give me a quick explanation
for how it can be acheived in R so I can avoid having to switch
between the two applications.
How do I find the Summary Statistics in one Vector of the dataframe by
levels in another of the
2006 Jul 09
1
KS Test Warning Message
All,
Happy World Cup and Wimbledon. This morning finds me with the first
of my many daily questions.
I am running a ks.test on residuals obtained from a regression model.
I use this code:
> ks.test(Year5.lm$residuals,pnorm)
and obtain this output
One-sample Kolmogorov-Smirnov test
data: Year5.lm$residuals
D = 0.7196, p-value < 2.2e-16
alternative hypothesis: two.sided
Warning