Displaying 3 results from an estimated 3 matches for "lm_obj".
2010 Jul 20
1
Transformation of Y changes the 'lm' object?
Hi R,
This is a problem, which I have tried to present in a simple way:
Let,
x1=1:10
x2=2:11
y=2+3*x1
lm_obj=lm(y~x1+x2)
lm_obj
step(lm_obj) # Step function for the first time
y=y^0.1
lm_obj
step(lm_obj) #Step function after a transformation on Y, but 'lm_obj' is not modified.
The two step function behave differently. The first one is before the transformation on 'Y',...
2008 Oct 20
2
R 2.8.0 is released
...ent with other graphics
devices supporting semi-transparency.
o plot.dendrogram() has new arguments (xlim, ylim) which allows
zooming into a hiearchical clustering dendrogram.
o plot.histogram() gains an 'ann' argument. (Wish from Ben Bolker.)
o plot(<lm_obj>) now warns when it omits points with leverage one
from a plot.
o Plotmath now recognizes 'aleph' and 'nabla' (the Adobe Symbol
'gradient' glyph) as symbol names.
o polyroot() no longer has a maximum degree.
o The alpha/alphamax argume...
2008 Oct 20
2
R 2.8.0 is released
...ent with other graphics
devices supporting semi-transparency.
o plot.dendrogram() has new arguments (xlim, ylim) which allows
zooming into a hiearchical clustering dendrogram.
o plot.histogram() gains an 'ann' argument. (Wish from Ben Bolker.)
o plot(<lm_obj>) now warns when it omits points with leverage one
from a plot.
o Plotmath now recognizes 'aleph' and 'nabla' (the Adobe Symbol
'gradient' glyph) as symbol names.
o polyroot() no longer has a maximum degree.
o The alpha/alphamax argume...