Notebooks
Use a notebook to work out a number on live data while the test runs: filter a noisy pressure, take an RMS, chase a wobble from yesterday's run. A setup runs the test; a notebook only analyzes. It has no Deploy and no Stop, and it can never drive an output.
In Trellis, choose New notebook. Write cells, separated by # %%:
ch = channels()
# %% [markdown]
# How much noise rides on this signal?
# %%
sig = ch["/ni/ai1"]
sig_clean = weir.ema(sig, alpha=0.2)
# %%
noise = weir.rms(sig, window_ms=1000)
chart("noise vs signal", [sig_clean, noise])
# %%
probe(noise.below(0.4))Draft channels
Each name you compute becomes a live draft channel under the notebook's
name: sig_clean above is /draft/noise-check/sig_clean. Use it like any other
channel: chart it, watch it on Live, name it in an alert. It stops when the
notebook does.
A draft can't be used in an interlock; the deploy is refused. Publish it as a derived channel first, or use an alert instead.
When you edit a cell, only that cell and the cells that depend on it restart. Fixing a typo in your notes never restarts a running calculation. A cell with a mistake turns red; the others keep running.
| Per cell | Does |
|---|---|
| Run (⇧⏎) | runs the cell |
| Mute | pauses it |
| Reset | clears its built-up state (an integrator, an RMS window) and starts it fresh |
Where a number came from
Every draft and derived channel remembers the notebook and the cell that defined it.
On Live, a computed channel's tile has a small branch chip by its name. Click it to see what the channel is, what it can feed, and an origin row naming the notebook. Click that row to open the notebook in Trellis, scrolled to the defining cell with a ring around it. An older channel that names no cell opens the notebook.
Note: Loading a demo document clears the notebooks, documents and functions a previous demo left behind, and only those. Anything you wrote yourself is never touched.
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