SigmasPreview

If you're doing anything serious with RES4LYF's schedulers and sigma nodes, this is the one you actually want open. SigmasPreview takes a SIGMAS curve and plots it as an image - a little line graph of your noise schedule - so you can see the shape you built instead of reasoning about a wall of numbers. It's a diagnostic node, and its unusually high click-through (people find it and click) tells you it solves a real, felt problem: RES4LYF gives you a dozen ways to bend a sigma curve and almost no way to visualize the result, and this fills that gap.

Once you've stared at a few of these, scheduler choice stops being superstition. You can literally see that Karras concentrates the drop in the middle while beta and simple stay gentler, and you can see the moment a custom curve goes wrong.

How it works

Wire the SIGMAS output of any scheduler or sigma-manipulation node into this node's input, and it renders the curve to an image in your ComfyUI output. It's an output node, so it runs and shows the plot at the end of the graph without needing anything downstream. Optionally it can also dump the raw values as a printed list.

The inputs and output

• sigmas (SIGMAS) - the curve to plot. This is the whole input; feed it from ClownScheduler, Linear Quadratic Advanced, Sigmas Easing, or any node that emits a schedule.
• print_as_list (default false) - also print the sigma values as a plain list, handy when you want to copy exact numbers or compare two schedules value-by-value.
• line_color (default "blue") - the plot line color. Cosmetic, but useful if you're overlaying or comparing.

The single output is IMAGE - the rendered plot. Route it to a Preview Image node, or just read it off the node itself since this is an output node.

Installing it

ComfyUI Manager: search RES4LYF, install, restart. Manually:

cd custom_nodes
git clone https://github.com/ClownsharkBatwing/RES4LYF/
cd RES4LYF
pip install -r requirements.txt

pip install inside the venv (or portable Python), restart, hard-refresh F5. No downloads.

Common issues

There's very little to break here - it's a viewer. The one thing worth saying is use it more than you think you need to. The single biggest complaint about RES4LYF is that it's under-documented and easy to get lost in, and half of that fog clears the moment you can see your schedule. Building a custom curve with ClownScheduler or reshaping one with Sigmas Easing? Preview it. Confused why bong_tangent behaves oddly? Preview it and you'll see it ignore your shift. Debugging a sampler that produces mush at low steps? Preview the schedule feeding it. If the node's missing from your menu, RES4LYF isn't installed.