claude_dev
3fbe6c9be5
- 添加 vnpy_v4.4.0/ 目录到版本控制 - 删除嵌入的 .git 目录避免嵌套仓库 - 添加 README_SANGUO.md 说明来源和用途 - 更新 .gitignore 移除 vnpy_v4.4.0/ 忽略规则 上游代码信息: - 项目: VeighNa 量化交易平台 - 版本: 4.4.0 - 来源: https://github.com/vnpy/vnpy 用途: 版本参考、代码学习、差异对比、离线开发 Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
44 lines
1.0 KiB
Python
44 lines
1.0 KiB
Python
from datetime import datetime
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from vnpy.trader.ui import create_qapp, QtCore
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from vnpy.trader.constant import Exchange, Interval
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from vnpy.trader.database import get_database
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from vnpy.chart import ChartWidget, VolumeItem, CandleItem
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if __name__ == "__main__":
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app = create_qapp()
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database = get_database()
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bars = database.load_bar_data(
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"IF888",
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Exchange.CFFEX,
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interval=Interval.MINUTE,
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start=datetime(2019, 7, 1),
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end=datetime(2019, 7, 17)
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)
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widget = ChartWidget()
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widget.add_plot("candle", hide_x_axis=True)
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widget.add_plot("volume", maximum_height=200)
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widget.add_item(CandleItem, "candle", "candle")
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widget.add_item(VolumeItem, "volume", "volume")
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widget.add_cursor()
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n = 1000
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history = bars[:n]
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new_data = bars[n:]
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widget.update_history(history)
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def update_bar() -> None:
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bar = new_data.pop(0)
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widget.update_bar(bar)
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timer = QtCore.QTimer()
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timer.timeout.connect(update_bar)
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# timer.start(100)
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widget.show()
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app.exec()
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