---
title: Chart historical measurements in Boss’nX analytics
description: Select the tracked datapoints of a building and chart their recorded measurements in Boss’nX, with the period, the aggregation and the checks that matter.
canonical: https://wiki.can-nx.com/en/guides/boss-analytics-consult/
language: en
product: Boss’nX
audience:
  - utilisateur
  - administrateur
  - installateur
context: "Boss’nX, building supervision: Analytics page, Trends tab, with the View analytics permission"
---

# Chart historical measurements in Boss’nX analytics

Context: Boss’nX, building supervision: Analytics page, Trends tab, with the View analytics permission

In Boss’nX, the **Trends** tab of the **Analytics** page charts the measurements recorded for the tracked datapoints of a building, over the period you choose. It is intended for the supervision’s users, administrators and installers. The measurements offered depend on the datapoints tracked for this project.

## Before you start

- Your role has the **View analytics** permission in the building supervision: see [roles and their permissions](https://wiki.can-nx.com/en/guides/boss-roles-consult/).
- The datapoints you want to view are tracked for this project. To choose the KNX addresses to record in history, an authorized administrator or installer follows [the selection of addresses to log](https://wiki.can-nx.com/en/guides/boss-knx-monitoring/), in **Menu → Data logging**.

## Open the building’s analytics

1. Open the relevant supervision. From a hypervision, [enter the building supervision](https://wiki.can-nx.com/en/guides/boss-hypervision-switch/).
2. Click **Analytics** in the header bar, or open **Menu → Analytics**. On a tablet or phone, **Menu** is at the right of the bottom bar.
3. At the top of the page, check that the **Trends** tab is selected. The other tab, **Chart'nX**, is not covered here.

The settings bar brings together **Datapoints**, **Time range**, **Query precision**, **Aggregation** and the **Generate chart** button. The result is shown below it, in **Chart preview**.

From [a component’s history](https://wiki.can-nx.com/en/guides/boss-component-history/), the **Analytics** button, when available, opens this page with the component’s tracked datapoints already selected. The chart may then be requested automatically over the last seven days, today included. Check the selected datapoints and the period displayed.

## Select the datapoints

1. Click **Datapoints**. The **Available datapoints** menu opens, with the selected / available counter.
2. Search for a datapoint by its name, its component, its location or its identifier. Fictitious example: “Lobby temperature”.
3. Expand the building parts, floors and zones with the small chevrons, then check the datapoints you want. The box to the right of a group selects its datapoints; the counter next to it shows the selection in this group.
4. Click **Done**. The number of selected datapoints is shown on the **Datapoints** button.

In this menu:

- **Select all** and **Deselect all** act on the datapoints matching the current filters. To clear the whole selection, go back to **All**, clear the search, then click **Deselect all**.
- **Checked** shows the selected datapoints. The search also filters this view: clear it to see all the checked datapoints again. If you remove the last datapoint, the list returns to **All**.
- **Favorites** contains the selections saved in this browser; see [reuse a favorite selection](https://wiki.can-nx.com/en/guides/boss-analytics-favorites/).
- A datapoint missing from the list is not added by entering its name in the search.

## Generate the chart

1. Set **Time range**, **Query precision** and **Aggregation**: the [periods and options guide](https://wiki.can-nx.com/en/guides/boss-analytics-periods/) describes them.
2. Click **Generate chart** and wait for loading to finish.
3. After any change to the datapoints, the period, the aggregation or the precision, click **Generate chart** again to apply it.

To reuse the values in a spreadsheet, follow [the CSV export](https://wiki.can-nx.com/en/guides/boss-analytics-export/).

## Check the result

- Under the **Chart preview** title, a line states the applied period, aggregation and precision. Check them, along with the names and units of the series.
- **Settings changed · generate to apply them** means that the chart on screen, and therefore its export, still matches the previous request: generate it again.
- Without any change of settings, clicking **Generate chart** again does not necessarily fetch the measurements again.
- The chart shows recorded measurements: it replaces neither live monitoring nor a check of the device’s physical state.

## Troubleshooting

| Symptom | Useful checks |
| --- | --- |
| **Analytics** missing from the bar and the **Menu** | Check the building, then have the administrator check the **View analytics** permission. |
| **No datapoints match your filters.** | Clear the search and choose **All**. If the datapoint is still missing, have it confirmed that it is tracked for this project; do not change its addresses at random. |
| **Generate chart** grayed out | Check at least one datapoint: on hover, **Select at least one datapoint before generating a chart.** reminds you. Wait for any loading to finish and check that no message reports missing project information. |
| **Project information is missing. Reload the page or contact your administrator.** | Reload the page once and check the building context. If the message persists, contact the administrator. |
| **No data to display yet.** after generation | Check the datapoints, the dates and the times. Try a period in which a measurement is expected, then generate again. This message only concerns the datapoints and the period requested. |
| **Unable to load datapoint values. Please try again later.** | Check your session and try again once. If the failure persists, note the message and the parameters used. |

## Why does a visible component have no measurements in analytics?

Only the datapoints tracked for this project appear in analytics, even if the component is in the building. Go back to **All** without a search, then have the tracking of the datapoint checked.

## Can I get an automatic diagnosis or all the archives?

For a diagnosis, first display the data, then click **AI Diagnostic**, next to **Export to CSV**: the analysis covers the displayed series. The button stays greyed out while no data is displayed. For the archives, have support confirm their availability, their scope and the applicable retention period for your installation. Do not infer them from the presence of a chart.

## Contact support

If the problem persists after these checks, write to support@can-nx.com with the building, the component, the datapoint, the period, the message shown and the attempts made. A screenshot without sensitive data can help; never share a password or an access key.

French labels: **Analyses** (bar and **Menu**), tab **Courbes**, **Points de données**, **Points de données disponibles**, **Tous / Cochés / Favoris**, **Tout sélectionner / Tout désélectionner**, **Terminer**, **Plage temporelle**, **Précision**, **Agrégation**, **Générer le graphique**, **Aperçu du graphique**, **Paramètres modifiés · générez pour les appliquer**, permission **Voir les analyses**.