[R] How to add values on the axes of the 3D bi-variable lrm fit?

From: Jan Verbesselt <Jan.Verbesselt_at_biw.kuleuven.be>
Date: Mon 22 Aug 2005 - 23:49:38 EST


Dear r-list,  

When I try to plot the following 3D lrm fit I obtain only arrows with labels on the three axes of the figure (without values).  

fit <- lrm(y ~ rcs(x1,knots)+rcs(x2,knots), tol=1e-14,X=T,Y=T)

dd <- datadist(x1,x2);options(datadist='dd');


plot(fit,x1=NA, x2=NA, theta=50,phi=25)  

How can I add values to the axes of this plot? (axes with the range of values of each of the explanatory variables x1&x2)  



Ir. Jan Verbesselt
Research Associate
Group of Geomatics Engineering
Department Biosystems ~ M-BIORES
Vital Decosterstraat 102, 3000 Leuven, Belgium Tel: +32-16-329750 Fax: +32-16-329760

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