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<DIV><FONT face=Arial size=2>Hi!</FONT></DIV>
<DIV><FONT face=Arial size=2> I am trying to perform a
nonlinear regression using nls in a data.frame where I have a lot of
missing values (na's) in the response. I would like to assign zero weight to
those values. I have been looking to the nls help page and there is some mention
to na.action, with na.omit and na.fail as options, which does not seem to suit
me.</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2> I need the missing values
once my model is doing a numerical integration over values of the independent
values where I don't have the information of the response.</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>my best regards,</FONT></DIV>
<DIV> </DIV>
<DIV><FONT face=Arial size=2>IOsu</FONT></DIV></BODY></HTML>