search for: mathkb

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2011 May 06
1
Conditional plot length in R
Hello All, Let's say I have data spanning all quadrants of x-y plane. If I plot data with a certain x and y range using xlim and ylim or by using plot.formula as described in this link: http://www.mathkb.com/Uwe/Forum.aspx/statistics/5684/plotting-in-R *DF <- data.frame(x = rnorm(1000), y = rnorm(1000)) * *> str(DF)* *'data.frame': 1000 obs. of 2 variables: $ x: num -0.0265 0.1554 -0.1050 -0.9697 -0.3430 ... $ y: num 1.386 -1.356 -1.170 0.426 0.204 ... Now, let's plot...
2010 Jun 19
1
Extracting P-values from the lrm function in the rms library
...for here. Specifically, I found these links -- all dead-ends: https://stat.ethz.ch/pipermail/r-help/2005-August/078210.html <== Nope. Doesn't give right output. http://r.789695.n4.nabble.com/extracting-p-value-from-an-lrm-object-td854071.html <== Nope. The output is different. http://www.mathkb.com/Uwe/Forum.aspx/stat-consult/1381/Extracing-p-values-from-lrm-object <== Nope. Wrong output. Can anyone crack this seemingly simple problem? Surprisingly the answer was not revealed using str(mod3.poly) either. Thanks in advance, ----------------------------------- Josh Banta, Ph.D Center f...