Hi Nathan, First, you need to have the data in Ferret. Do you have a single list of data, which is rainfall versus time? Once you have that, you can run the regresst.jnl script. Say your variable is called rain, then yes? let p = t[gt=rain] yes? let q = rain yes? plot rain ! just plot the time series to see what you have yes? go regresst ! Now, the variables slope, intercep, qhat, and rsquare hold ! the results of the linear fit. yes? plot/sym q ! this shows the original data as a scatter plot yes? let myline = p * slop + intercep yes? plot/vs/over p, qhat ! the linear fit. And so forth. Nathan Toombs wrote:
