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380 results for “from:Mark Difford”

Kernel Regression
Mark Difford · Dec 14, 2007 · r-sig-finance

Hi Sudhakar, The np package is well worth a look, and can handle mixed data types; not sure if it has specific options for time series. Regards, Mark Sudhakar Achath wrote: > > Dear all: > > I am not able to find a...

Can R do this ?
Mark Difford · Jul 8, 2008 · r-help

Hi Daren, Can R (out)do Emacs? I think you just need to ?Sweave a little. Mark. Daren Tan wrote: > > > I have a folder full of pngs and jpgs, and would like to consolidate them > into a pdf with appropriate...

how to correlate nominal variables?
Mark Difford · Jul 27, 2009 · r-help

Hi Timo, >> I need functions to calculate Yule's Y or Cram?rs Index... Are such >> functions existing? Also look at assocstats() in package vcd. Regards, Mark. Timo Stolz wrote: > > Dear R-Users, > > I need functions to calculate Yule's...

Problem with RSVGTipsDevice
Mark Difford · Jun 11, 2007 · r-help

Hi Mister_Bluesman, Sadly it is; and it stays up (in what's probably a bold, sans serif), lurking behind the "ToolTip," when that comes up. This is not my area of X, but any standard txt editor will open...

reading lmer table
Mark Difford · Aug 19, 2010 · r-help

Hi Nicola, >> In few word: does this row indicate a global effect of the predictor >> 'cat' >> or a more specific passage? It indicates a more specific passage. Use anova(m7) for global/omnibus. Check this for yourself by fitting the...

NLME: using the layout option with the plot command
Mark Difford · Jun 20, 2006 · r-help

Hi Greg, Since you haven't yet had a response, you could distill this. It uses the pixel dataset from nlme() as an example. ## To get separate files, do this postscript("c:\MyGraph%03.ps", onefile=F) plot(Pixel, display...

Interesting Plot
Mark Difford · Apr 7, 2009 · r-help

Hi James, Daniel Chessel's table.value function (also look at table.paint) in ade4 will do the main panel, you will need to build the side panels. It is brilliantly simple, and becomes especially informative and powerful when used...

lmm WITHOUT random factor (lme4)
Mark Difford · Mar 17, 2011 · r-help

On Mar 17, 2011; 11:43am Baugh wrote: >> Question: can I simply substitute a dummy var (e.g. populated by zeros) >> for "ID" to run the model >> without the random factor? when I try this R returns values that seem...

Multinomial Logistical Model
Mark Difford · May 25, 2011 · r-help

On May 24, 2011; 11:06pm Belle wrote: > Does anyone know how to run Multinomial logistical Model in R in order to > get predicted probability? Yes. I could stop there but you shouldn't. The author of the package provides...

different results in MASS's mca and SAS's corresp
Mark Difford · Feb 5, 2011 · r-help

>> When I came to David's comment, I understood the theory, but not the >> numbers in his answer. I wanted to see the MASS mca answers "match >> up" with SAS, and the example did not (yet). I am inclined to...

fitted values are different from manually calculating
Mark Difford · Feb 19, 2008 · r-help

Hi Yianni, This just proves that you should be using R as your calculator, and not the other one! Regards, Mark. gatemaze wrote: > > Hello, > > on a simple linear model the values produced from the fitted(model) > function > are difference from...

4th corner analysis ade4 - what do the colors mean
Mark Difford · Jan 20, 2012 · r-help

On Jan 21, 2012; 7:39am stephen sefick wrote: > I plot the combined value with plot(four.comb, type="G"). What do the > colors mean? I have both grey > and black bars. The help file for fourthcorner plainly tells you...

bwplot in ascending order
Mark Difford · May 2, 2011 · r-help

On May 01 (2011) Harold Doran wrote: >> Can anyone point me to examples with R code where bwplot in lattice is >> used to order the boxes in >> ascending order? You don't give an example and what you want is...

Package rrcov, functions PcaCov, PcaHubert, PcaGrid
Mark Difford · Jul 13, 2011 · r-help

On Jul 13, 2011; 12:03pm Albina wrote: > Error: diff(sv)<0 ist not all TRUE > ... . >snip< > The same error occurs with the other functions. What does this mean and > how can I perform the robust > PCA with these functions...

How to do a PCA with ordered variables?
Mark Difford · Sep 17, 2009 · r-help

P. Branco wrote: >> I have used the dudi.mix method from the ade4 package, but when I do the >> $index it shows >> me that R has considered my variables as quantitative. >> What should I do? You should make sure that...

a question about taylor.diagram in plotrix package
Mark Difford · Jan 21, 2012 · r-help

On Jan 20, 2012; 4:08pm "baydap" wrote: > In the embedded figure you can see the label "correlation" is too close > to the ticks. How can I move it and make > it larger? I have hacked the function to do...

How to best analyze dataset with zero-inflated loglinear dependent variable?
Mark Difford · Jun 9, 2012 · r-help

On Jun 08, 2012 at 5:37pm Heidi Bertels wrote [fwd: Iuri Gavronski]: > The dependent variable is "problematic" because of its distribution. > It is zero-inflated (many projects did not receive funding), and for > those projects that did receive funding...

ordiellipse
Mark Difford · May 25, 2011 · r-help

On May 26, 2011 Andrew Halford wrote: > I am using ordiellipse to plot the ellipses and it works fine except one > of my groups > contains only 2 sites and I cannot get an ellipse around them. I'm > assuming > that...

PCA and % variance explained
Mark Difford · Sep 9, 2008 · r-help

Hi Paul, >> how do you view how much each component contributes to variance in the >> dataset ... It helps to read the help: ?princomp ?prcomp Contributions to inertia or variance are reported as standard deviations (princomp.obj$sdev). So square these...

lmm WITHOUT random factor (lme4)
Mark Difford · Mar 18, 2011 · r-help

On Mar 18, 2011; 10:55am Thierry Onkelinx wrote: >> Furthermore, I get an error when doing an anova between a lm() and a >> lme() model. Hi Thierry, You get this error because you have not done the comparison the way...

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