[gradsusr] Using tloop

Brian Gaze brianw.gaze at googlemail.com
Wed Jun 12 16:28:34 EDT 2019


I'm trying to use tloop like this:

'set t 1 last'
'd tloop(var1 - var1(t-1)) '

The problem I get (I think) is that the first value isn't calculated
because t=1 and therefore t-1 does not exist.

Can anyone tell me how to deal with this and plot the first value as well
as the following ones?


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