Has anyone created Matplotlib widgets?

[isConic]

I'd like to re-use or modify them for something I'm trying out. I'm a foreigner when it comes to QT. Looking for a way to jump into making a bespoke plotting widget without all the experimentaiton.

[leon-thomm]

I actually did some tests a long time ago, so I just recycled some of that old code. Here is a tiny example that should include most code needed to get it running with Qt:

nodes.py

from ryven.NWENV import *
from qtpy.QtWidgets import QWidget, QVBoxLayout

import matplotlib
import matplotlib.pyplot as plt
matplotlib.use('Qt5Agg')
from matplotlib.backends.backend_qt5agg import FigureCanvas, NavigationToolbar2QT as NavigationToolbar
from matplotlib.figure import Figure


class PlotWidget(MWB, QWidget):
    def __init__(self, params):
        MWB.__init__(self, params)
        QWidget.__init__(self)

        # Matplotlib
        self.canvas = FigureCanvas(Figure(figsize=(5, 3)))
        self.ax = self.canvas.figure.subplots()

        # Qt
        self.setLayout(QVBoxLayout())
        self.layout().addWidget(self.canvas)
        self.setFixedHeight(300)

    def redraw(self, x, functions):
        self.ax.clear()
        for f in functions.keys():
            self.ax.plot(x, functions[f], label=f)
        self.ax.figure.canvas.draw()


# ------------------------------------------------------------------------------


from ryven.NENV import *


class MatplotlibNode(Node):
    title = 'Matplotlib'
    main_widget_class = PlotWidget
    main_widget_pos = 'below ports'

    def update_event(self, inp=-1):
        self.main_widget().redraw(range(10), {'x^2': [x**2 for x in range(10)]})

    def view_place_event(self):
        self.update()


export_nodes(
    MatplotlibNode,
)

To test it put it in a new nodes package, import it and place the node, it should show the graph of x^2.

[isConic]

🙏 This is an excellent starting point
Thanks @leon-thomm !

[isConic]

Just had the chance to try it out:
Looking good!

[isConic]

Got it working. It's coming together nicely!

Apr-04-2022.21-49-22.mp4