Use PyQtGraph to plot data

[Giulero]

This PR introduces the use of PyQtGraph to plot the data. Ideally, this can be used in place of matplotlib for faster execution and might be used for real-time logging, see #80.

New functionality:

• robot_log_visualizer/plotter/pyqtgraph_viewer_canvas.py: Added a new class PyQtGraphViewerCanvas to visualize data with PyQtGraph. This class includes methods for initializing the canvas, updating plots, handling mouse clicks for annotations, and controlling animation.

Enhancements to existing functionality:

• robot_log_visualizer/plotter/color_palette.py: Added a __call__ method to the ColorPalette class, allowing it to be used as a callable for retrieving colors by index.

[Copilot]

Pull Request Overview

This PR introduces a new PyQtGraph canvas component to plot data in real-time, replacing matplotlib for improved performance in real-time logging. Key changes include:

• Adding the PyQtGraphViewerCanvas class with plotting, animation, and annotation functionality.
• Enhancing color_palette by enabling it to be used as a callable to retrieve colors.

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
robot_log_visualizer/plotter/pyqtgraph_viewer_canvas.py	New canvas class using PyQtGraph with animation and annotation.
robot_log_visualizer/plotter/color_palette.py	Added a call method to retrieve colors via a callable interface.

Comments suppressed due to low confidence (1)

robot_log_visualizer/plotter/pyqtgraph_viewer_canvas.py:3

• Duplicate import of 'pyqtgraph' detected. Please remove the redundant import statement to keep the code clean and avoid potential confusion.

import pyqtgraph as pg

[traversaro]

I guess we need to add pyqtgraph to the dependencies in

robot-log-visualizer/setup.cfg

Line 42 in 1a61360

install_requires =

?

[GiulioRomualdi]

I guess we need to add pyqtgraph to the dependencies in

robot-log-visualizer/setup.cfg

Line 42 in 1a61360

install_requires =

?

Yes! In the future, we can also move to the toml configuration

[Giulero]

I guess we need to add pyqtgraph to the dependencies in

robot-log-visualizer/setup.cfg

Line 42 in 1a61360

install_requires =

?

Sure! Done with d3ef505

[Giulero]

For now in 1772740 i substituted the MaplotlibViewerCanvas with the PyQtGraphViewerCanvas, but with could think of a logic that allows the user to choose one or another.

[GiulioRomualdi]

We can try to work on this and see if we can merge by few days

[Copilot]

Pull Request Overview

This PR replaces matplotlib with PyQtGraph for plotting data to improve performance and enable real-time logging. Key changes include:

• Adding the pyqtgraph dependency in setup.cfg.
• Switching the plotting canvas in PlotItem from the MatplotlibViewerCanvas to the new PyQtGraphViewerCanvas.
• Introducing a new PyQtGraphViewerCanvas class with support for plotting, annotations, and animation control.
• Enhancing ColorPalette by adding a call method for color retrieval.

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
setup.cfg	Added pyqtgraph dependency
robot_log_visualizer/ui/plot_item.py	Updated canvas instantiation to use PyQtGraphViewerCanvas
robot_log_visualizer/ui/gui.py	Added key press event handling for play/pause toggle
robot_log_visualizer/plotter/pyqtgraph_viewer_canvas.py	Added new class for PyQtGraph based plotting and interaction
robot_log_visualizer/plotter/color_palette.py	Introduced call to simplify color lookup functionality

[Copilot]

[nitpick] Consider extracting the magic number 0.01 into a named constant to improve code readability and maintainability.

Suggested change

	if min_dist < 0.01 * (
	if min_dist < self.ANNOTATION_DISTANCE_THRESHOLD_RATIO * (