artiq/artiq/applets/plot_xy.py

64 lines
1.9 KiB
Python
Executable File

#!/usr/bin/env python3
import numpy as np
import PyQt5 # make sure pyqtgraph imports Qt5
import pyqtgraph
from artiq.applets.simple import TitleApplet
class XYPlot(pyqtgraph.PlotWidget):
def __init__(self, args):
pyqtgraph.PlotWidget.__init__(self)
self.args = args
def data_changed(self, data, mods, title):
try:
y = data[self.args.y][1]
except KeyError:
return
x = data.get(self.args.x, (False, None))[1]
if x is None:
x = np.arange(len(y))
error = data.get(self.args.error, (False, None))[1]
fit = data.get(self.args.fit, (False, None))[1]
if not len(y) or len(y) != len(x):
return
if error is not None and hasattr(error, "__len__"):
if not len(error):
error = None
elif len(error) != len(y):
return
if fit is not None:
if not len(fit):
fit = None
elif len(fit) != len(y):
return
self.clear()
self.plot(x, y, pen=None, symbol="x")
self.setTitle(title)
if error is not None:
# See https://github.com/pyqtgraph/pyqtgraph/issues/211
if hasattr(error, "__len__") and not isinstance(error, np.ndarray):
error = np.array(error)
errbars = pyqtgraph.ErrorBarItem(
x=np.array(x), y=np.array(y), height=error)
self.addItem(errbars)
if fit is not None:
xi = np.argsort(x)
self.plot(x[xi], fit[xi])
def main():
applet = TitleApplet(XYPlot)
applet.add_dataset("y", "Y values")
applet.add_dataset("x", "X values", required=False)
applet.add_dataset("error", "Error bars for each X value", required=False)
applet.add_dataset("fit", "Fit values for each X value", required=False)
applet.run()
if __name__ == "__main__":
main()