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From | 渡邉真理子 <mariko.wt@gmail.com> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: RE: coefficients constraint in nlsur and nl does not work |
Date | Thu, 18 Nov 2010 12:34:54 +0900 |
Dear Brian, Thank you . What I typed are as follows: nlsur( transactionvolume_s =(cashstock2001)*({bg: $sita_pc}+{mc})/({mc}-{ef: $s_pc2}+{bg:})) (postpayment_s = {ef: $s_pc2}/({bg: }+{mc})) I did also exted all variables without using global command. nlsur( transactionvolume_s =(cashstock2001)*({bg: inputshareofsupplier potentialsupplier ln_startyear_s}+{mc})/({mc}-{ef: repaid_p_sim delayed_p_sim default_p_sim}+{bg: })) (postpayment_s = {ef:}/({bg:}+{mc})) But, both get the same ansuwer: two few variable specified. Mariko 2010/11/18 Brian P. Poi <brian@poiholdings.com>: > Dear Mr.Poi, > > Thank you for your kind guidance. > I did try it again according to your suggestion, then Stat says "too few > variables specified". > But , is it in this case? I could not understand. > > Mariko > > >> -------------- >> >> Mariko, >> >> When you specify a linear combination with -nlsur-, you should only >> specify the variables once. To refer to the linear combination again >> in your function, you specify just the name and colon, not the >> variables that go along with it. I think your syntax should be >> >> . nlsur (y1 =(A)*({bg: $sita_pc}+{mc})/({mc}-{ef: $s_pc2} + {bg:})) >> /// >> (y2 = {ef:}/({bg:}+{mc})) >> >> >> (Arguably -nlsur- should probably exit with an error if you try and >> define a linear combination twice, but it didn't in your case.) >> >> > > Mariko, > > Without seeing exactly what you typed, it's hard to say. However, my guess > would be that the global macros $sita_pc and $s_pc2 that you used in your > original command syntax are no longer defined. > > -- Brian Poi > -- brian@poiholdings.com > > > > * > * For searches and help try: > * http://www.stata.com/help.cgi?search > * http://www.stata.com/support/statalist/faq > * http://www.ats.ucla.edu/stat/stata/ > * * For searches and help try: * http://www.stata.com/help.cgi?search * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/