Add commented ex. code for line price charts
parent
acf8aeb33e
commit
bfcf5170dc
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@ -123,6 +123,7 @@ class ChartSpace(QtGui.QWidget):
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self,
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symbol: str,
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data: np.ndarray,
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ohlc: bool = True,
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) -> None:
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"""Load a new contract into the charting app.
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"""
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@ -147,7 +148,7 @@ class ChartSpace(QtGui.QWidget):
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if not self.v_layout.isEmpty():
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self.v_layout.removeWidget(linkedcharts)
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main_chart = linkedcharts.plot_main(s, data)
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main_chart = linkedcharts.plot_main(s, data, ohlc=ohlc)
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self.v_layout.addWidget(linkedcharts)
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return linkedcharts, main_chart
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@ -234,7 +235,7 @@ class LinkedSplitCharts(QtGui.QWidget):
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name=symbol.key,
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array=array,
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xaxis=self.xaxis,
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ohlc=True,
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ohlc=ohlc,
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_is_main=True,
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)
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# add crosshair graphic
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@ -746,6 +747,15 @@ async def _async_main(
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ohlcv = feed.shm
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bars = ohlcv.array
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# TODO: when we start messing with line charts
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# c = np.zeros(len(bars), dtype=[
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# (sym, bars.dtype.fields['close'][0]),
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# ('index', 'i4'),
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# ])
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# c[sym] = bars['close']
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# c['index'] = bars['index']
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# linked_charts, chart = chart_app.load_symbol(sym, c, ohlc=False)
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# load in symbol's ohlc data
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linked_charts, chart = chart_app.load_symbol(sym, bars)
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@ -849,6 +859,11 @@ async def chart_from_quotes(
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l, lbar, rbar, r = last_bars_range
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in_view = array[lbar:rbar]
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mx, mn = np.nanmax(in_view['high']), np.nanmin(in_view['low'])
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# TODO: when we start using line charts
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# sym = chart.name
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# mx, mn = np.nanmax(in_view[sym]), np.nanmin(in_view[sym])
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return last_bars_range, mx, mn
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last_bars_range, last_mx, last_mn = maxmin()
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@ -898,6 +913,11 @@ async def chart_from_quotes(
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array,
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)
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# chart.update_curve_from_array(
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# chart.name,
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# TODO: when we start using line charts
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# np.array(array['close'], dtype=[(chart.name, 'f8')])
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# if vwap_in_history:
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# # update vwap overlay line
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# chart.update_curve_from_array('vwap', ohlcv.array)
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