posum.surface {posum} | R Documentation |
Produces data for plotting population or death surfaces for fitted posum models, also produces the plot itself.
posum.surface(b,fdi=b$options$fdi,m=b$options$con.mesh, type="p",plot=TRUE,con=FALSE,theta=60)
b |
A fitted gam object for a posum model with at least the extra
variables. |
fdi |
multiplier used to control finite difference intervals when obtaining death rates for a type 1 model. |
m |
data is returned on and m by m mesh. |
type |
"p" for population, "d" for total death rate or
"m" for per capita mortality. |
plot |
TRUE if a plot should be produced. |
con |
TRUE if plot should be a contour plot, otherwise a perspective
plot is shown. |
theta |
angle for viewing perspective plot. |
Routine calls posum.pop.matrix
and posum.death.matrix
to do the real work.
A list with items a
, t
and z
is returned, suitable
for plotting with a call such as: contour(as,ts,res$z)
Simon N. Wood snw@st-and.ac.uk
Gu and Wahba (1991) Minimizing GCV/GML scores with multiple smoothing parameters via the Newton method. SIAM J. Sci. Statist. Comput. 12:383-398
Wood (2000) Modelling and Smoothing Parameter Estimation with Multiple Quadratic Penalties. JRSSB 62(2):413-428
Wood (2003) Thin Plate Regression Splines in press JRSSB
http://www.ruwpa.st-and.ac.uk/simon.html
posum
age.max
,
cm.splinefun
,
death.surface
,
hyman.filter
,
pcdr
,
population
,
population.data
,
population.surface
,
posum.atplot
,
posum.check
,
posum.con
,
posum.fit
,
posum.options
,
posum.plot
,
posum.stage
,
posum.stage.plot
,
posum.X
,
rec
,
sim.age.bound
,
spl.coef.conv
,
stage.bound
,
survival
,