forked from awendt/pyrelacs
76 lines
2.2 KiB
Python
76 lines
2.2 KiB
Python
import pyqtgraph as pg
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from IPython import embed
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import numpy as np
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from pyqtgraph.Qt.QtCore import QTimer
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from pyrelacs.dataio.circbuffer import CircBuffer
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from pyrelacs.util.logging import config_logging
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log = config_logging()
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class Continously:
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def __init__(self, figure: pg.GraphicsLayoutWidget, buffer: CircBuffer):
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self.figure = figure
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self.buffer = buffer
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def plot(self, *args, **kwargs):
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self.figure.setBackground("w")
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prev_plot = self.figure.getItem(row=0, col=0)
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if prev_plot:
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self.figure.removeItem(prev_plot)
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self.continous_ax = self.figure.addPlot(row=0, col=0)
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pen = pg.mkPen("red")
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self.time = np.zeros(self.buffer.size)
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self.data = np.zeros(self.buffer.size)
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self.line = self.continous_ax.plot(
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self.time,
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self.data,
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pen=pen,
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# symbol="o",
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)
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# self.plot_index = 0
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self.timer = QTimer()
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self.CHUNK_PLOT = 10_000
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self.timer.setInterval(200)
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self.timer.timeout.connect(self.update_plot)
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self.timer.start()
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def update_plot(self):
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# log.debug(self.buffer.totalcount())
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if self.buffer.totalcount() > self.CHUNK_PLOT:
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log.debug(self.buffer.totalcount())
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try:
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times, items = self.buffer.read(
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self.buffer.write_index() - self.CHUNK_PLOT - 1_000,
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extend=self.CHUNK_PLOT,
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)
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except IndexError as e:
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items = np.zeros(self.CHUNK_PLOT)
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times = np.zeros(self.CHUNK_PLOT)
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log.debug("No Data Available")
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log.debug(f"Index Error {e}")
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# self.time = np.roll(self.time, -len(items))
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# self.data = np.roll(self.data, -len(items))
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#
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# self.time[-len(times) :] = times
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# self.data[-len(items) :] = items
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self.line.setData(
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times,
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items,
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)
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# self.plot_index += len(items)
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else:
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pass
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def stop_plotting(self):
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self.timer.stop()
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def refresh(self):
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self.continous_ax.enableAutoRange()
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