Hi, First of all, I thank Professor Murdoch and Dr Sarkar for providing
important information. Now, this problem has been basically solved. The
package akima helps to fultil the objective originally resorting to
expand.grid. Now, I can use contour or perspective 3-D plot. Hopefully,
this
Dear R users,
I have a problem in plotting 3 dimensional graph using mixed models.
My model is
sur_prop ~
afr_c+I(afr_c^2)+I(afr_c^3)+byear_c+I(byear_c^2)+I(byear_c^3)+I(byear_c^4)+(1|Studyparish)+afr_c:byear_c
willow1980 wrote:
Dear R users,
I have a problem in plotting 3 dimensional graph using mixed models.
My model is
sur_prop ~
afr_c+I(afr_c^2)+I(afr_c^3)+byear_c+I(byear_c^2)+I(byear_c^3)+I(byear_c^4)+(1|Studyparish)+afr_c:byear_c
Dear Professor Murdoch,
That is exactly the difficulty for me. I don't know how to make a prediction
with lmer using expand.grid; at the moment, I can use
“mo...@x%*%fixef(model)” to get predicted values for existing observational
data, but not data by expand.grid. Actually, if I know this, I can
On Thu, Aug 13, 2009 at 6:34 AM, willow1980jianghua@shef.ac.uk wrote:
Dear Professor Murdoch,
That is exactly the difficulty for me. I don't know how to make a prediction
with lmer using expand.grid; at the moment, I can use
“mo...@x%*%fixef(model)” to get predicted values for existing
willow1980 wrote:
Dear Professor Murdoch,
That is exactly the difficulty for me. I don't know how to make a prediction
with lmer using expand.grid; at the moment, I can use
“mo...@x%*%fixef(model)” to get predicted values for existing observational
data, but not data by expand.grid. Actually, if
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