Stacked Chart Types in TimeView

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TimeView now offers two new chart types - Stacked and Stacked % - that let you visualize how multiple devices or metrics combine into a total.

What is it?

When you're tracking several devices or series at the same time, the standard Normal chart overlays each line or bar independently. The new stacked modes let you see how those series build on top of each other - either as absolute totals or as relative percentages.

When to use it

• Stacked - see the combined load of multiple devices over time. Useful for peak identification and understanding each device's contribution to a total.
• Stacked % - see what percentage of the total each device accounts for at any given moment. Useful for comparing load composition or spotting which device dominates consumption.

How to Switch to a Stacked View

You need at least two series selected in your chart before stacking becomes available.

1. Open TimeView and select two or more devices or metrics.
2. In the top-right corner of the chart, click the chart settings icon (the circular icon between the temperature indicator and the expand button). The Customize chart panel opens on the right.
3. Under Chart type, choose Stacked or Stacked %.

What You'll See

Stacked mode

The panel shows the description: "Series are summed and stacked: the height shows the total." Line charts become stacked area charts - each device fills upward from the one below it. The Y-axis shows absolute values (kWh, kW, m³, etc.), and the total height of the stack equals the sum of all visible series at that time.

Stacked % mode

The panel shows the description: "Each series is shown as a percentage of the per-bucket total." The Y-axis normalizes to 0-100%. Each timestamp sums to 100%, and each device's band shows its share of the total. Hiding a device in the legend recalculates the percentages immediately for the remaining series.

Stacked % mode shows each device as a proportion of the total - here, you can see how two devices split the site's power consumption across the week:

Reading the Tooltip

Hover over the chart to see a breakdown for that timestamp:

• Each visible series, its absolute value, and its percentage contribution.
• A Total row at the bottom showing the combined value.

In Stacked % mode, the Total row shows 100%.

A Note on Which Series Can Stack

Stacking only works when series share the same measurement category and unit. For example, two devices measured in kWh can stack together; a kWh device and a kW device cannot - they belong to different stack groups.

Series that cannot stack - including external meters with a different unit, or measurement types like Gas when Power is the active stack - appear in the legend marked Not compatible with stacked mode. They are excluded from the stack calculation but remain visible in the legend so you can toggle them on and off.

A blue info banner also appears in the device panel: "Some meters are disabled because they don't support this data type."

Note: Normalize data is not available while Stacked or Stacked % is active. To use it, switch back to Normal chart type first.

Export Your TimeView Chart as an Image

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You can now save your TimeView chart as a PNG or JPEG file - directly from the same modal you already use to create CSV exports.

How to Export

1. Set up your chart in TimeView -v select the devices, time range, and chart type you want to capture.
2. Click the export icon in the chart toolbar (next to the Legend button). The Create Exports modal opens.
3. The modal now has two sections: Image at the top and CSV below. In the Image section, choose your format - PNG (default) or JPEG.
4. Click Create. The image saves to your browser's default download location immediately - no export job is created.

The downloaded image includes the chart, its title, and the selected date range - ready to paste into a report or share with a colleague.

Note: PDF export is not available from this flow. If you need a PDF, export to image and convert it separately.