The Trace Table can be found below the trace window and the range selector, at the bottom of the trend.
The trace table displays each trace item. Note that you can only add 20 items, and a warning message appears if you attempt to add more than this. You can configure your trace items by updating the table, and you can add or remove trace items in the table. Your selections are saved when you save the trend, and you can also save your selections to a snapshot of the trend.
To adjust the height of the Trace Table, click and drag its top border.
| 1. | Axis | Trace items get a Left Y-Axis by default. Click L to give an item a Left Y-Axis, and click R to give an item a Right Y-Axis. | ||||||||||
| 2. | Colour | To change the trace colour, click to open the colour wheel, then select a colour or choose a custom colour where you can also set opacity. | ||||||||||
| 3. | Style | To change the trace style, click to open the style wheel, then select from Line, Area, Dot, Step Before, and Step After. | ||||||||||
| 4. | Show/Hide Trace | Select this to hide the trace, and de-select to show it again. | ||||||||||
| 5. | Name | The trace Name is a full display name of the item which is a tag, attribute value, or calculation. An attribute value could have an underlying value of a tag or a calculation.
You can drag an item onto the trend, and the name will insert into a new row automatically. Or you can type a name in, using Auto-Complete. To remove the trace from the trend, click the trash |
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| 6. | Description | The description from the underlying tag or calculation. | ||||||||||
| 7. | Value | This shows the values for the respective items in the trace. If the trend has hairlines, then this is the current value from the latest hairline that was added or moved; otherwise, it is the current value from the end-time of the selected time range for the trend. | ||||||||||
| Dual Hairline Statistics | The Value column changes to a drop-down list of Dual Hairline Statistics options, if the trend is in Dual hairline mode, and if two hairlines are selected. Select from one of the following options: | |||||||||||
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| Note: The values and statistics in the trace table are calculated using the last known value before each hairline position, whereas the hairline information panel shows the interpolated value at the hairline position. | ||||||||||||
| 8. | Units | The units from the underlying tag or calculation. | ||||||||||
| 9. | Display Min | The minimum value from the underlying tag or calculation's Display Range (on P2 Server). Click in the box to edit the value. To reset its minimum value as stored in P2 Server, click the  on the right of the value. Clicking Auto Range on the trend ribbon updates all of the minimum and maximum values, so that all data points are visible on the trend. |
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| 10. | Display Max | The maximum value from the underlying tag or calculation's Display Range (on P2 Server). Click in the box to edit the value. To reset its maximum value as stored in P2 Server, click the on the right of the value. Clicking Auto Range on the trend ribbon updates all of the minimum and maximum values, so that all data points are visible on the trend. |
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| 11. | Indicators | Any issues with the data or the data fetch are indicated by an error icon. Hover over the icon to view error details.  |
Keyboard Shortcuts
When you have focus in the trace table, you can use any of these keyboard shortcuts:
- Arrow Keys: Use the up and down arrows to select a new item in the trace window. If you are editing the Display Min or Display Max of a trace item, use the up and down arrows to increase/decrease by 1.
- Delete Key: Remove the selected trace from the trend.
- Esc Key: Cancel out of whatever you are editing.
- Spacebar: Toggle between showing and hiding the selected trace item.
Trace Name
The item’s Name in the trace table has the following features:
- The name is preceded by an icon, indicating what it is.
- There is a calculator icon
linking to the Calculation Editor. - There is a trash icon
for removing the trace from the trend. - The Name edit box has auto-complete functionality for tags and attributes.
- The name for an attribute value is displayed as: Entity -> Attribute -> Attribute value
The following icons provide information regarding the trace item:
| Icon | Item | Icon | Item |
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Tag |
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An invalid definition, for example an incomplete attribute definition |
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Calculation |
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Templated attribute |
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Attribute: This is the icon for the entity’s primary template, and can vary (e.g.  ) |
OR Attribute (where the entity’s primary template does not have an icon) |
Auto-Complete
When you start typing a name directly into the Name column for a new item in the trace table, a list of tags, calculations and entities appears, where the name or description matches the search text.
If you are adding an attribute value, you can do this using auto-complete, starting with the entity name, and qualifying until you have the attribute value, as follows:
1. Type in part of the entity name, then select an entity (TWell 1) from the list of entities and tags.
Note: You can also type in wildcard characters (* or ?) if you are searching for a pattern, such as in the screenshot below where we are searching for TWell?1* (all tags/tag descriptions or entities that start with TWell, followed by a character or space, followed by 1, followed by one or more characters). Read more about Searching with Wildcard Filtering.
2. Select a template (Oil Producing Well) from the list of templates for that entity.
3. Select an attribute (Alloc Oil) from the selected template’s list of attributes.
4. Select an attribute value (Actual) from the selected attribute’s list of attribute values.
The fully-qualified display name appears in the Name column of the trace table.
Trace Table Videos