I have seen literature on using a combination of the 'strucchange' and 
'segmented' packages to find and fit piecewise linear models. I have been 
trying to apply the same methods to quantile regression from the quantreg 
package, but am having issues using a "rq" object where the function 
assumes a "lm". Has anyone had this issue?
--------------------------------------
Jonathan P. Daily
Technician - USGS Leetown Science Center
11649 Leetown Road
Kearneysville WV, 25430
(304) 724-4480
"Is the room still a room when its empty? Does the room,
 the thing itself have purpose? Or do we, what's the word... imbue it."
     - Jubal Early, Firefly
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