Highcharts: PSAR and MACD indicators fail with few or no points in main series

Thanks for reporting!

This is result of using less points than params.longPeriod+params.signalPeriod (defaults to 26+9-current point). I see two solutions:

• throw an error (H.error(), or maybe H.warn()?) that we have less points than needed
• gracefully do nothing and wait for more points, users can be surprised and confused that they don't see indicator series

What do you think @oysteinmoseng , @TorsteinHonsi ?

I think gracefully do nothing, that's what the other indicators do (e.g. sma). Or alternatively return null or 0 points. It's useful to not throw an error for this, as the data might be dynamic.

Oh, SMA accidentally works fine.. It looks like during transition/refactoring from Indicator class to Series this safeguard was removed.