Displaying 7 results from an estimated 7 matches for "rjporter".
Did you mean:
reporter
2001 Oct 16
5
optimal windows R machine
For some mysterious reason I do not believe this was delivered to the list.
Sorry if it turns out to be a duplicate.---Bob
>> Subject: optimal R windows machine
I have the happy task of purchasing a new windows desktop PC. I have a
limited but not unreasonable budget and access to discounts and so forth.
What would be folks' suggestions of priorities and requirements be if I
will
2002 Dec 29
3
lowess + turnpoints = doubling integers?
Happy New Year, r-helpers!
I am using lowess to smooth a scatter plot,
xx<-lowess(xinput,f=.04) #defaults for other args
followed by
turnpoints(xx$y) #defaults for other args
I plot the smoothed result as well as turnpoints (using yy$tppos) on top of raw
data plot.
Result is exactly as expected, graphically.
For another purpose, I calcuate the difference between turnpoints (representing
2003 May 02
2
Suppressing Scientific Notation
...u)
******************************* Footnotes: ***********************************
(*) Thomas Gerds <gerds@fdm.uni-freiburg.de> "[R] printing decimal numbers"
posted to R-help on 24 Feb 2003.
> how can i force R to print 0.0001 instead of 1e-04???
Bob Porter <rjporter@mindspring.com> "[R] scientific notation"
posted to R-help on 16 Mar 2003
> Is there a way to force R to forgo use of scientific notation...
(**) In R-1.7.0. Also on lines 395 and 421 for complex numbers.
*********** diff output for my "scipen" modifications...
2003 Apr 22
4
fisher exact vs. simulated chi-square
Dear All,
I have a problem understanding the difference between the outcome of a
fisher exact test and a chi-square test (with simulated p.value).
For some sample data (see below), fisher reports p=.02337. The normal
chi-square test complains about "approximation may be incorrect",
because there is a column with cells with very small values. I
therefore tried the chi-square with
2002 Mar 14
1
list function objects only
I use R and SPlus intensely, yet sporadically, and always seem to forget
something essential....even if I keep logs. Anyway, I thought I used to use
a command in R to list or identify only those objects that were
functions.....eg to create a list for filing. Am I hallucinating? I can't
seem to find the function I want in SEARCH.
In a related way, is there an R package that provides object
2003 Mar 16
0
scientific notation
If I knew this, I have forgotten it:
Is there a way to force R to forgo use of scientific notation,
e.g. to use .000029 instead of 2.9e-05?
(Aside from using formatC for example)
I run across this every now and then and work around it (multiple values by 100,
for example) but cannot find any way to deal with it otherwise. A particularly
problematic place it pops up is in axis tick labels.
2003 Mar 27
0
a statistic question about chisq.test() (aprilsun)
The Chisquare test is based upon a normal approx of the (essentially) binomial
distribution for the data in question. Small EXPECTED (not observed) values
(<5) suggest a asymetric distribution and potential errors in inferential
conclusions. The alternative is the exact test, which calculates the exact
probabilities of the observed distribution, or a more extreme one, given the
constraining