Hello, I have fit a simple spline model to the following data.

Data
x	y
0	1.298
2	0.605
3	0.507
4	0.399
5	0.281
6	0.203
7	0.150
8	0.101

Model
Sp.1=lm(y~bs(x,df=4))

Now I wish to inverse predict the x for y=.75, say.  Optimize works fine
for a polynomial but I can figure out how to get the spline model into
the function argument.  

Can anyone help me out.  

Thanks!!

Jeff

Jeff Morris
Sanofi Pasteur



This communication, including any attachments, is intended solely for the use of the addressee and may contain information which is privileged, confidential, exempt from disclosure under applicable law or subject to copyright. If you are not an intended recipient, any use, disclosure, distribution, reproduction, review or copying is unauthorized and may be unlawful. If you have received this transmission in error, please notify the sender immediately. Thank you.

Cette communication,y compris les pieces jointes, est reservee a l'usage exclusif du destinataire et peut contenir des informations privilegiees, confidentielles, exemptees de divulgation selon la loi ou protegees par les droits de publication. Si vous n'etes pas un destinataire, toute utilisation, divulgation, distribution, reproduction, examen ou copie est non-autorisee et peut etre illegale. Si vous avez recu cette communication par erreur, veuillez aviser l'expediteur immediatement. Merci.
					

	[[alternative HTML version deleted]]

