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hi guys, i have some trouble in creating lagged variables to use as external regressors. i'm trying to use lag(x) but it gives me as result the same time series (x), adding this part at the end: attr(,"tsp") [1] 0 2323 1 where do i wrong?are there other functions to be used? thanks sara -- View this message in context:

Hi, i need a little help! i must create a dummy variable to insert as external regressor in the variance equation of a garch model; this dummy is referred to the negative sign of returns of an asset, so it has to be 1 when returns are negative and 0 when they are positive, and in my model the dummy is multiplied by another time series, the daily range. (have i explained well?!) thank's a lot

Hi guys, does anyone know if there is the possibility to fit a gamma distribution using ugarch?honestly i don't know if maybe is possible to fix some parameters that reduce ghyp or ged in a gamma distribution.. thanks a lot sara -- View this message in context: http://r.789695.n4.nabble.com/gamma-distribution-in-rugarch-package-tp4637893.html Sent from the R help mailing list archive at