EViews.com

I have two variables RGDP and WAGES
I'm supposed to generate two new series D_RGDP and D_WAGES using eviews D functions:
D(X) = X-X(-1)
D(X) = X(t)-X(t-1)

t and t-1 are subscripts

what would be the commands to do this?
I get syntax error/(-1) not good when i try genr series d_rgdp = grgdp-grgdp(-1) for the first one
and I'm not sure at all how to generate the second one with my variables

I have two variables RGDP and WAGES
I'm supposed to generate two new series D_RGDP and D_WAGES using eviews D functions:
D(X) = X-X(-1)
D(X) = X(t)-X(t-1)

t and t-1 are subscripts

what would be the commands to do this?
I get syntax error/(-1) not good when i try genr series d_rgdp = grgdp-grgdp(-1) for the first one
and I'm not sure at all how to generate the second one with my variables

any of Just don't say both genr and series.

thanks, how would I then do the one with the D(X)=Xt-Xt-1 for wages

thanks, how would I then do the one with the D(X)=Xt-Xt-1 for wages

I thought they were two different commands?
or are they the same then?
D(X)=X-X(-1) verse D(X)=Xt-Xt-1

In EViews a number in parentheses gives a lag. You don't explicitly put in the t.

ah ok, thank you!
Do you know how I would run 10 forecasts using 200 observations each
this is to help calculate MAPE and RMSE

That sort of thing depends on exactly what you're trying to do. You might want to read some of the online tutorials or EViews Illustrated to get a head start on how to use EViews tools.