To go to the Trend details page:
- In a custom dashboard, click a tile to expand the tile.
- In the Operational summary page, below the performance chart for a test, click View trend chart.
- In the Test overview page, select the Performance/Availability tile, then click View trend chart below the Performance and availability chart.
- In an Operations dashboard available through the Dashboards page, click a Performance value, then click Open in chart view.
- In the Performance dashboard, click View in charts above the chart for the test or in the Steps tab.
- In the Alert details page for an alert listed in the Alert log, click View in charts in the Root Cause Analysis section.
For more information, see Analysis Workflow.
You can view details for a data point, change the chart configuration, and drill down for data analysis.
The data in the Trend details page is automatically refreshed every 5 minutes.
View data point details
In chart tiles, hold the mouse pointer over a data point to display a popup window with details about the data point. The details depend on the chart type and the measure.
The details popup is not available for Gauge charts.
View chart and/or table
By default, the Trend details page displays both the trend chart and a data table. You can select to display only the chart or only the table.
The table lists data for the charted metrics according to the data splittings (for example, by step or by host). It also lists the number of errors if the metric is charted by test or by step.
If you change the time frame in the Trend details page, the measure value is recalculated for the new time frame.
The data table and the legend below the chart identify the colors used to chart the measures.
To remove a measure from the table, click the measure in the legend.
To remove all the measures for a test from the table, clear the check box next to the test name in the data table.
Change the time frame and resolution
Select the time frame from the time frame menu above the Trend details view. Note that this changes the time frame for the entire dashboard. For details about the time frame menu, see Dashboards.
If you opened the Trend details view from a custom dashboard tile, you can change the time frame for a chart if the chart does not have a tile-specific time frame configured.
You can change the resolution (charting interval) even if the chart has a tile-specific time frame. Click the current resolution above the chart and select the new resolution from the list.
Change the chart type
In a chart tile, you can temporarily change the chart type to get another perspective of the data. For example, you might want to change a line chart to a raw scatter chart.
Click the chart type icon at the top left corner of the chart to display the available chart types; the current type is highlighted. Click the chart type you want to view.
This feature is only available for chart tile types. In the Trend details view, you can't change the tile type for a Status Overview or Synthetic tests tile.
The Gauge chart tile only supports one test. If you change a chart that includes more than one test to a gauge chart, it will only chart the first test, and you'll see the message "Maximum of 1 series exceeded" above the chart.
Filter the chart data
Use the filters in the left sidebar of the Trend details view to refine the data displayed in the chart. You can choose to view data just for specific items in any or all filter categories. For example, if you suspect that a performance issue is limited to certain measurement locations, you can filter the data to see just those locations instead of creating a new chart with the data split by location.
The filters are available in the main Trend details view of a chart tile and in Investigate by series charts.
To filter the chart:
- Click the filter icon at the top left corner of the chart to display the filter list.
- Click the expand icon next to a filter category name to display the items in that category.
- Select the item(s) you want to include in the data.
When you apply a filter, all unselected items in that category are excluded from chart, but other categories are not affected.
To include multiple items from a category, click each item in turn; you don't need to hold down the Ctrl or Shift key for multiple selections. To undo selecting an item, click the item again.
When you select the first filter item, the Remove all filters control appears at the top of the filter pane. Each selected item is highlighted and displays a filter icon.
As you select each filter item, the chart is updated automatically with filtered data.
Working with filtered data
All Trend details view features are available when you apply filters to the chart. You can change the chart type, change the time frame and resolution, use the legend or table to remove items from the chart, and drill down to other charts.
When you drill down from the Trend details view to an Investigate by series chart or an interactive chart (via View in interactive charts ), the chart data has the same filters applied as in the parent chart. When you return to the Trend details view, the filter pane is closed but the filter selections are preserved.
To remove an item from a filtered category:
- Before applying the filter – Click the item. The highlighting and filter icon are removed from the item.
- After applying the filter – Click the remove icon for the item. It is removed from the filter list.
If you remove all applied filters within a category, then all items in that category reappear, and you can make alternate filter selections if needed.
To quickly return to the unfiltered chart, click Remove all filters at the top of the filter pane.
The filters only persist while the Trend details view is open. When you return to the dashboard, the filters are removed.
Save changes to the Trend details view
When you change a chart in the Trend details view, by default these changes are not saved when you close the Trend details view.
Use Save to permanently change chart settings; or Save As to create a new chart tile and keep the original chart unchanged.
You can only save changes to the Trend details view when you display a chart from a custom dashboard. This feature is not available when you drill down from an Operations dashboard or from another Portal page such as the Operational summary page.
Change the chart as needed:
- Change the chart type.
- Apply filters.
- Change the time resolution.
- Select whether to show the chart, table, or both.
- Select whether to show the legend.
Click the "more" icon to display the save options.
Select how to save the displayed chart.
- Save permanently applies the changes to the original chart.
- Save As creates a new chart.
If you selected Save As, the new chart has the same name as the original chart. Open the chart for editing to rename it.
Investigate by series
In the Trend details view of a custom dashboard tile, you can regroup the data by a series that can provide insight into test performance. Use the Investigate links in the data table to select the series to chart.
Investigating by series is available for all chart tiles.
Which series are available for charting depends on how the chart's measures are configured. These series are the same as the splittings you can apply to a measure in the Tile configurator, and the Group by options in interactive charts.
The following figure shows the series that are available when the data is charted by test.
When you select a series to investigate, a new chart is generated. Use the breadcrumb trail to return to a parent chart.
Most Trend details view features are available in an Investigate by series chart. For example, you can select a different chart type, or select a data point to drill down to a Raw scatter chart or to the Waterfall summary page. However, you can't go to an interactive chart or to the Error analysis page from an Investigate by series chart. You also can't change the time frame or resolution. The applied time frame (from the parent chart) is displayed above the chart.
You can investigate the series for only one table row (charted item) at a time. For example, in the screenshots above, the Investigate by series chart shows data for the test that was selected to investigate.
You can use Investigate to examine aggregate data for all charted items:
- Data charted by test (no measure splittings) – Click Investigate > Aggregate all.
- Data charted by measure splittings – Click Investigate > No splitting (Test).
In the aggregated data chart, you can further investigate the data by any available series. For example:
You charted a test with the measure split by region. To view the data for the test as a whole, select Investigate > No splitting (Test).
You charted three tests that compare your website's performance in different browsers. You want to examine the performance of each test step, regardless of browser type.
- Select Investigate > Aggregate all in any row of the data table.
A new chart displays a single data line. The data table lists a single Aggregate row.
- Click Investigate > Step.
A new chart displays data lines for the steps.
- In the Investigate by Step chart, drill down from a data point to a Raw scatter chart, then view the object list for the scatter plot or drill down through the Waterfall summary page to the waterfall.
- Select Investigate > Aggregate all in any row of the data table.
Drilldowns for data analysis
From the Trend details chart, you can drill down to:
- A raw scatter chart
- The Waterfall summary page
- The Error analysis page
- An interactive chart of the data.
Go to a raw scatter chart
You can drill down to a Raw scatter chart from the Trend details view for most chart types.
Click a data point, then click the Raw scatter link in the popup window.
For more information, see Raw scatter.
Go to the Waterfall summary page
To go from the Trend details page to the Waterfall summary page, click a data point in the chart and select Waterfall summary from the popup window.
The Waterfall summary page displays data for the first of the test executions aggregated in the selected data point. Click the Next icon or Previous icon to scroll through all the text executions within the same hour.
For more information, see Waterfall summary.
Go to error analysis
Test executions with errors are identified with the error icon . Click the icon and select Error analysis from the popup window to go to the Error analysis page, filtered for the test and the test execution time. You can also go to the Error analysis page by clicking the Errors value in the table below the chart.
All Error analysis features are available when you drill down from Trend details. You can, for example:
- Remove the timestamp filter and change the time frame to see what errors have occurred during a selected time period.
- Click an arc in the Error types circle graph to focus your analysis on that error type.
- Click Inspect errors to view the list of test executions with errors (filtered the same as the Error analysis page). From this page, you can view screenshots or go to the Waterfall summary for a selected test execution.
For more information, see Error Analysis.
View in interactive charts
Click View in interactive charts at the top right of the Trend details view to display the data in an interactive chart. The interactive chart graphs the same measure (metric) as the chart tile, using the same time frame and resolution. The Interactive Chart will be the same chart type that the tile currently displays — for example, if you drill down from a stacked bar chart, the Interactive Chart displays the data in a stacked bar chart — with these exceptions:
- Pie chart drills down to a line chart.
- Gauge drills down to a line chart.
- Meter chart drills down to a line chart.
- Area chart drills down to a stacked area chart.
You can configure the interactive chart, and drill down from it for data analysis. For more information, see Interactive Charts. For more information about drilldowns available from the interactive chart, see Analysis Workflow.
Export the chart
To export the chart to a file, click the Download icon and select either Export to PNG (SD) or Export to PNG (HD). The (HD) option creates a higher-resolution image with a larger file size.