Displaying 3 results from an estimated 3 matches for "myscaled".
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myscale
2010 Sep 05
0
cov.unscaled in NLS - how to define cov.scaled to make comparable to SAS proc NLIN output - and theoretically WHY are they different
...ion. They are identical;
e.g., cov2cor(summary.nls.L$cov.unscaled)
I have even written a function to convert an NLS object into a "cov.scaled"
element that is equivalent to SAS:
scaledCOV = function (nlsObject)
{
myFactor = nlsObject$cov.unscaled[1,1]/(nlsObject$coefficients[1,2]^2);
myScaled = nlsObject$cov.unscaled/myFactor;
myScaled;
}
so with this function I can determine the factor difference between R and
SAS (which is different with each data run of NLS and NLIN). This factor is
based on the same standard errors:
summary.nls.L$cov.scaled = scaledCOV(summary.nls.L$cov.unscaled...
2012 Aug 24
1
help with a special variant of balloonplot
Hi,
I am interested in implementing a special variant of
balloonplot. Let me
explain with an example dataset from the reference manual :
library(gplots)
data(Titanic)
dframe<-as.data.frame(Titanic)
survived<-dframe[dframe$Survived=="Yes",]
attach(survived)
balloonplot(x=Class,y=list(Age,Sex),z=Freq,sort=TRUE,show.zeros=TRUE,cum.margins=FALSE,
main="BalloonPlot :
2011 Aug 09
1
Transparent color ramp problem
Hello,
I can't seem to add transparency to any color ramp I create using colorRampPalette(). Can someone tell me if it is possible to create transparent colour ramps?
I am attempting to map shaded relief under elevation data. I know I can use the terrain.colors() with the alpha option, but I would prefer to create my own colour ramp using more vibrant colours.
My most recent attempt at