' EViews generates NA for coefficient table if coefficient vector c is set to NA prior to estimation

mode quiet

!n = @obsrange 
!f = 750-1



vector(!n-!f) coefs

for !i = 1 to (!n-!f)
smpl @first+!i-1 @first + !f + !i -1

for !q = 1 to 2

c = NA 'it works when c is set to c = 0 but not with c = NA
equation test.qreg(quant = 0.125, cov = iid) gvars_dlcrude c gvars_dlsnp gvars_dlcrude(-1)
coefs(!i) = c(2) 

next 'close the quantile loop
next ' close the rolling sample loop