the 1st option gives a broken line and add faded colour between the predict line and it. I guess this is what upperbound and lowerbounds do. For some reason it does not show the upperbound in the legend in the graph but I can see it in the stats tab.
with the 2nd option:
assuming val is constant e.g. 80,000 this gives me a straight line into the future
... | timechart span=d max(val) as val_lic | predict val_lic future_timespan=216
adding the following makes no real difference, except I just get a bit of faded colour
... | timechart span=d max(val) as val_lic | predict val_lic future_timespan=216 upper90=upperbound | eventstats max(val_lic) as upperbound
tks the 1st option is worth noting but the 2nd not add anything extra for me.
My main prlem is getting the horizontal line to cover the dates into the future, which I already addressing, but I was just looking for a better way. For instance if val was an available field, and it was equal to 80, I want to be able to draw that 80 as a horizontal line accross the complete time chart, that is past and future using the predict function.
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