https://github.com/Temult/TWanSigmaGraph
A ComfyUI node for interactively editing sigma schedules via graph and text.
https://github.com/Temult/TWanSigmaGraph
Last synced: about 2 months ago
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A ComfyUI node for interactively editing sigma schedules via graph and text.
- Host: GitHub
- URL: https://github.com/Temult/TWanSigmaGraph
- Owner: Temult
- License: mit
- Created: 2025-04-05T01:09:28.000Z (2 months ago)
- Default Branch: main
- Last Pushed: 2025-04-12T14:56:27.000Z (about 2 months ago)
- Last Synced: 2025-04-12T15:21:37.679Z (about 2 months ago)
- Language: JavaScript
- Size: 159 KB
- Stars: 4
- Watchers: 2
- Forks: 2
- Open Issues: 2
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Metadata Files:
- Readme: README.md
- License: LICENSE.txt
Awesome Lists containing this project
- awesome-comfyui - **TWanSigmaGraph**
README
# Sigma Graph Custom Node for [ComfyUI](https://github.com/comfyanonymous/ComfyUI) and [Wan-Video](https://github.com/Wan-Video)
__Prototype - Node is in early development, not intended for active use.__
**A compact, bidirectional editor for sigma schedules used in diffusion sampling.**
- 📈 **Interactive Graph:** Drag points on the graph to shape your sigma schedule.
- ✍️ **Text Editing:** Edit sigma values directly in the text box – changes are auto-synced.
- 🔁 **Apply Changes:** Click the ▼ button to apply text changes to the graph.
- 💾 **Presets:** Save/load custom curve presets with the 💾 button.
> **Note:** On first load the node's UI may render incorrectly (it may appear empty). If this happens, please refresh the page until the issue is resolved. This is a known alpha-stage bug that will be addressed in future updates.
## Installation
1. **Copy the Folder:**
Copy this folder to your ComfyUI custom nodes directory:
`ComfyUI/custom_nodes/TWanSigmaGraph`
2. **Restart ComfyUI:**
Restart ComfyUI so that it can register the new node.
3. **Locate the Node:**
In the ComfyUI interface, find **SigmaGraphNode** under the **sampling → custom** category.
## How to Use
1. **Set Steps:**
Adjust the `steps` input to define the number of sampling steps. The output sigma tensor will contain `steps + 1` values.
2. **Design Your Curve:**
Use either the interactive graph or the text box to shape your sigma curve.
3. **Apply & Sync:**
- Click the ▼ button to apply the sigma values from the text box to update the graph.
- The graph and the text box are automatically synced.
4. **Connect the Output:**
Connect the output labeled `SIGMAS` to your preferred diffusion sampler (e.g., KSampler) that supports external sigma schedules.
5. **Save Presets (Optional):**
- Toggle the save mode using the 💾 button.
- Click on a preset slot to save the current curve or load a previously saved curve.
## File Overview
| File | Purpose |
|------------------------------|------------------------------------------------------------------------|
| `__init__.py` | Registers the node and instructs ComfyUI where to find the widget code |
| `TWanSigmaGraph.py` | Contains the backend logic to generate the sigma tensor schedule |
| `js/TWanSigmaGraphWidget.js` | Implements the custom graph widget UI (drag, sync, and presets) |
## Troubleshooting
- **Node Not Rendering Correctly:**
On the first load, the node’s widget may sometimes render incorrectly (e.g., it might appear empty). Simply refresh the page until the widget appears as expected.
- **Empty or Incorrect Presets:**
Ensure that your browser’s local storage is not blocking data saves if presets aren’t showing.
## Thanks
- **Realistic_Studio_930:**
For introducing the concept of sigma schedules and inspiring the graph’s design.
- **huchenlei:**
For providing invaluable guidance and reviewing the JavaScript implementation.
- **Google & OpenAI:**
Special thanks to Gemini 2.5 Pro and ChatGPT, which were instrumental in refining the development process.
## License
This project is released under the MIT License. See the [LICENSE.txt](LICENSE.txt) file for details.