Plot vertical line on price chart based on indicator value?
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Can this be done? I'd like to plot a vertical line on the price chart based on an indicator value (0 or 1). If it can't be done - can I plot a vertical line on the indicator chart? If so, how?
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Plotting a vertical line is actually not there, neither on the data nor on the indicator. Your best bets:
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Having an observer plotting markers on the data based on the value of an indicator. The
BuySell
observer looks into buy/sell orders to plot the markers. This would allow you to plot on the data but would be the most ad-hoc solution. -
Having an indicator plotting markers. For the markers you can look into the
BuySell
observer or theParabolicSAR
indicator. In your case and since you only want the marker when your indicator is1
, you only assign a value to the indicator when that's the case (and leave the0
case untouched)
From
BuySell
plotlines = dict( buy=dict(marker='^', markersize=8.0, color='lime', fillstyle='full', ls=''), sell=dict(marker='v', markersize=8.0, color='red', fillstyle='full', ls='') )
The marker values and options are defined by
matplotlib
. See how this Blog - Arrows for the BuySell Observer changes the markers for theBuySell
observer -