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Analytics — Sharing & Persistence
The Analytics view (/graph) makes it easy to share what you see and pick up where you left off. This page covers exporting, deep-link URLs and what state is remembered between sessions.
For the page layout and toolbar reference, see Analytics — Overview & Toolbar. For the working steps, see Analytics — Working with Data.
Contents
1. Exporting
- Export PNG in the toolbar saves the chart and the state-band strip as a single PNG. Filename:
graph-YYYY-MM-DD-HH-MM-SS.png. - CSV export in the table panel exports the table data. Filename:
graph-YYYY-MM-DD-HH-MM-SS.csv.
2. Sharing a specific view
The Analytics URL stays in sync with your current selection — useful as a bookmark within your own session for jumping back to a particular configuration. For sharing with a teammate, see the caveats in URLs and tabs: a Coldwave-generated URL plus a screenshot is the safest combination.
3. Deep links
Heads-up. These URL patterns are reliable when Coldwave generates them (e.g. when you click Show Graph in Alarms or Fleet — Device Details). They're documented here as a reference for understanding what Coldwave produces and for use in scripts or bookmarks. See URLs and tabs for why hand-constructed URLs are not a reliable way to send a colleague to a specific view.
Other pages link into /graph with query parameters that pre-populate the selection:
| Parameter | Meaning |
|---|---|
device=<id> | Pre-select a device. |
fromProps=<service>.<propId>[;<service>.<propId>…] | Comma-/semicolon-delimited list of properties to plot. |
fromWatcher=<watcherId> | Load the property set and alarm associated with a watcher. |
startTime=<ms> | Centre the time window around a specific timestamp. Combined with the parameters above, the page auto-loads. |
Example:
/coldwave-backend-ui/#/graph?device=bp408&fromProps=can.2001;can.2002&startTime=1716537600000The Alarms view and Fleet — Device Details both produce these URLs automatically when you click Show Graph on a property.
4. Persistence — what is remembered
Per-user, persisted between sessions:
- Axis ranges (Auto vs Fixed, with min/max) — restored when you re-open the page.
- Overlay configurations — saved as part of each property.
- The "Don't show Live Resume modal again" preference.
Reset between sessions (always start fresh):
- The selected time range — defaults to the last hour.
- The bottom-panel mode (table / sparkline) — defaults to table.
- The range-slider window position.
- Table row selection and chart crosshair markers.
Series selection itself — which devices and properties are loaded — is per-tab state and is controlled either via the gear dialog or via the deep-link URL parameters above.