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Updated legend color handling and scaling Provided PyQt lineplot example using black on white background
# delete docs/api dir rm -rf docs/source/api # delete _gallery dir rm -rf docs/source/_gallery # regenerate the API docs python docs/source/generate_api.py
Updated legend color handling and scaling Provided PyQt lineplot example using black on white background
# delete docs/api dir rm -rf docs/source/api # delete _gallery dir rm -rf docs/source/_gallery # regenerate the API docs python docs/source/generate_api.py
…stplotlib into legend-pygfx-compat
| def update_using_camera(self): | ||
| """ | ||
| Update the legend position and scale using the camera. | ||
| This only works if legend is in a Dock, not a Plot or Subplot. | ||
| """ |
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This will be much easier after #830 is merged (by tomorrow) since it adds an overlay render pass.
| ) | ||
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| # Subplot | ||
| self.ax = self.fig[0, 0] |
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let's just call these subplot instead of ax to conform with the rest of the examples, I can make these changes if you want
| def rotate(angle, axis_x, axis_y, axis_z): | ||
| """ | ||
| Quaternion representing rotation around the given axis by the given angle. | ||
| """ | ||
| a2 = angle/2.0 | ||
| c = cos(a2) | ||
| s = sin(a2) | ||
| return (axis_x * s, axis_y * s, axis_z * s, c) |
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nice, would be useful to have this in the addition to the existing Graphic.rotate
| # X label | ||
| self.ax.docks["bottom"].size = 30 | ||
| self.ax.docks["bottom"].add_text( | ||
| "X", | ||
| font_size=16, | ||
| face_color=(0, 0, 0, 1), | ||
| anchor="middle-center", | ||
| offset=(0, 0, 0), | ||
| ) | ||
| self.ax.docks["bottom"].background_color = self.WHITE | ||
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| # Y label | ||
| q = rotate(pi/2.0, 0., 0., 1.) # rotate 90 deg around z-axis | ||
| self.ax.docks["left"].size = 30 | ||
| self.ax.docks["left"].add_text( | ||
| "Y", | ||
| font_size=16, | ||
| face_color=(0, 0, 0, 1), | ||
| anchor="middle-center", | ||
| offset=(0, 0, 0), | ||
| rotation=q, | ||
| ) |
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pygfx will have seen soon, let's wait until we have the proper implementation pygfx/pygfx#739
| self.ax.docks["top"].size = 30 | ||
| self.ax.docks["top"].add_text( | ||
| "Line Plots", | ||
| font_size=16, | ||
| face_color=(0, 0, 0, 1), | ||
| anchor="middle-center", | ||
| offset=(0, 0, 0), | ||
| ) | ||
| self.ax.docks["top"].background_color = self.WHITE |
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why not subplot.title = "title"?
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Nice work! I was taking a look at your repos, are you trying to create something like this https://github.com/uutzinger/SerialUI ? Curious to hear how fastplotlib has been working for your use case. |
Yes that is why I am looking into fastplotlib. I hope to have some working prototype with fastplotlib shortly. I have been trying to figure out what the advantage of fastplotlib might be compared to pyqtgraph which is what I am currently using.
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We rely on the community for more detailed Qt examples, thanks for your contribution! We're not a Qt lib like pyqtgraph, wgpu can render to a anything that rendercanvas supports.
How many lines are your plotting and how many points per line? Is your 3060 selected or integrated graphics?
I'm hoping to make a benchmark for fastplotlib soon, you can take a look at the pygfx benchmarks for now: https://github.com/pygfx/pygfx-benchmarks
I think the rendering is intentionally paused when the canvas is being resized. |
Test Programs3 x 50_000 line segments per frame Hardware Options
Running on Ubuntu FASTPLOTLIB PerformanceNividia 3060 VulkanLines/s: 10,215,192, Interval: 1.011 Generating: 4.1% FPS: 63.40 Python Main Thread usage: 60.3% fullscreenLines/s: 5,058,138, Interval: 1.048 Generating: 3.8% FPS: 31.27 Python Main Thread usage: 48.7% Radeon VulkanLines/s: 11,278,138, Interval: 1.007 Generating: 4.9% FPS: 75.57 Python Main Thread usage: 75.6% fullscreenLines/s: 5,571,927, Interval: 1.055 Generating: 3.0% FPS: 34.26 Python Main Thread usage: 49.8% CPU/LLVM VulkanLines/s: 350,917, Interval: 1.715 Generating: 0.3% FPS: 2.33 Python Main Thread usage: 4.1% fullscreenLines/s: 540,940, Interval: 1.112 Generating: 0.3% FPS: 3.39 Python Main Thread usage: 6.4% Radeon OpenGLLines/s: 14,919,069, Interval: 1.010 Generating: 6.4% FPS: 88.10 Python Main Thread usage: 86.6% fullscreenLines/s: 5,379,418, Interval: 1.041 Generating: 3.5% FPS: 32.88 Python Main Thread usage: 49.2% PYQTGRAPH Performanceregular windowLines/s: 6,333,290, Interval: 1.018 Generating: 2.3% FPS: 41.75 Python Main Thread usage: 82.8% full screenLines/s: 2,195,240, Interval: 1.033 Generating: 0.8% FPS: 14.54 Python Main Thread usage: 72.9% |
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Thanks for the example, we're a bit busy with other projects at the moment so I'll incorporate your changes next month. |
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legend.py |
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Hi sorry I haven't had time to follow up on this. We're pretty busy with other low level priorities at the moment. If you'd like to contribute to a fully-fledged legend we outlined our ideas here, some of the ideas do need to be updated w.r.t. recent improvement in pygfx & fpl: #403 Legends should go in the overlay render pass that was introduced in #830, so updating with camera changes won't be necessary. I'm not sure if we still want to do a separate colorbar when colormaps are used for lines, it may make sense to derive something from the existing HistogramLUTTool. |
2 participants
Updated
legend.py:Example
qt/lineplot.pygitignore
testing
python docs/source/generate_api.pybecause legend has now background color option