how to use smpl twice in linreg

[Frank]

Hi Tom,

I'd like to do a regression model based on two variables, so I need to partition the data into four subgroups by using two variables.
For example:

linreg(smpl=mbratio>%mean, smpl=FCF>median)

but it doesn't work. Or, I need to use SAMPLE to partition the data in the first step?


Frank

[TomDoan]

Use .and. to combine the two conditions:

inreg(smpl=mbratio>%mean.and.FCF>median)