R help - Apr 2012 - A contour plot question - vis.gam () function in "mgcv"

Hi,

Please see the attached contour plot (I am sorry about the big file).  This was
created using the vis.gam() function in "mgcv" package.  However, my
question is somewhat broader.

In generating this figure, I first created the contours using vis.gam() and then
I plotted the points.  These point are plotted on top of the contours so that
some of the contour lines are only partially visible.  Is there a way to make
the contour lines fully visible?  I cannot reverse the order and plot the points
first and then call vis.gam().  Or, can I?  Are there other options?

Thanks for any help or hints.

Best,
Ravi


Ravi Varadhan, Ph.D.
Assistant Professor
The Center on Aging and Health
Division of Geriatric Medicine & Gerontology
Johns Hopkins University
rvaradhan at jhmi.edu<mailto:rvaradhan at jhmi.edu>
410-502-2619

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Try to plot the points first followed by vis.gam(...,type='contour',
color='bw', add=T) instead of vis.gam followed by points.

HTH


On Tue, Apr 3, 2012 at 2:48 PM, Ravi Varadhan <rvaradhan at jhmi.edu>
wrote:
> Hi,
>
> Please see the attached contour plot (I am sorry about the big file). ?This
was created using the vis.gam() function in "mgcv" package. ?However,
my question is somewhat broader.
>
> In generating this figure, I first created the contours using vis.gam() and
then I plotted the points. ?These point are plotted on top of the contours so
that some of the contour lines are only partially visible. ?Is there a way to
make the contour lines fully visible? ?I cannot reverse the order and plot the
points first and then call vis.gam(). ?Or, can I? ?Are there other options?
>
> Thanks for any help or hints.
>
> Best,
> Ravi
>
>
> Ravi Varadhan, Ph.D.
> Assistant Professor
> The Center on Aging and Health
> Division of Geriatric Medicine & Gerontology
> Johns Hopkins University
> rvaradhan at jhmi.edu<mailto:rvaradhan at jhmi.edu>
> 410-502-2619
>
>
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