Data Browser Plot Window
The Plot window could be considered the "main" window of the Data Browser.
Its title bar displays the name of the associated configuration file,
or "<not saved>" for a newly created Data Browser instance
that is not (yet) saved to a configuration file.
The button bar on top of the plot window provides interactive pan and zoom
operations.
In case the button bar is not visible, use the plot's context menu to
re-enable it.
- "Up/Down",
/
:
Move the chart up respectively down.
If the plot has multiple Y-Axes, you can move all axes or only a selected
Y-Axis. See next section on details of Y-Axis selection.
- "Y-In/Out",
/
:
Zooms the selected or all Y-Axes in respectively out.
- "Auto-Zoom",
:
Zooms all or the selected Y-Axis to display the channel data of
the current X-Axis time range.
- "Stagger",
:
If there is only a single Y-Axis, this is the same as Auto-Zoom.
For multiple Y-Axes, all Y-Axes are zoomed such that they optimally show
their current samples without overlapping.
For 2 Axes, one will auto-zoom to fill the upper half of the plot,
and the other axis data will occupy the lower half of the plot.
- "Default Zoom",
:
Uses the axis limits suggested by the PV. In case none are available,
defaults to auto-zoom.
- "Left/Right",
/
:
Moves the chart left/right.
- "X-In/Out",
/
:
Zooms the X or "time" axis in/out.
- "Scroll On/Off",
/
:
Turns scrolling on resp. off. When "on", the plot will continually scroll
in strip-chart fashion such that the right edge reflects the current time.
The scroll speed is configured in the
Config View.
Scrolling is automatically disabled in response to manual X-Axis
zoom and pan operations, since scrolling would otherwise interfere with
your manual X-Axis adjustments.
- "More", ...:
Opens a dialog box for entering custom start and end times, i.e. X-Axis
limits.
Selecting a Y Axis
If a plot has multiple Y-Axes, most of the Zoom and Pan operations described
above can operate on all axes or only a selected Y-Axis.
To select a Y-Axis, simply click onto the Y Axis.
The axis will redraw in a slightly wider line width,
and grid lines in the plot further emphasize the selected axis.
To de-select a Y-Axis, click on the X-Axis or just outside the
actual plot region and Y-axes area.
'Rubberband' Zoom
You can zoom into the plot by 'rubberbanding' a rectangle:
Click at start point, drag rectangle, release, and the plot will zoom
into the selected region.
Sample Markers
When clicking into the plot window, a marker is placed next to the nearest
sample, displaying the channel name, value and other information about the
sample. You can place multiple markers.
To remove markers, use the plot's context menu.
'Drop' PVs
You can use Drag-and-Drop to add PVs to the plot by dropping PVs
into the plot region itself, or onto a Y-Axis.
When dropping onto the Plot, the new PV is added with its own new Y-Axis.
When dropping onto an existing Y-Axis, the PV is added to that Y-Axis.
Context Menu Options
The context menu has the following options:
- Show/Hide Button Bar: Toggles the button bar on or off.
- Remove all Markers: Removes all sample markers.
- Remove selected Markers: Removes the selected sample markers. Select them by clicking on them.
- Add PV: Opens dialog box for entering new PV name.
- Add Formula: Adds a Formula.
- Config View: Opens the Config View.
- Archive View: Opens the Archive View.
- Sample View: Opens the Sample View.
- Export View: Opens the Export View.
- Open As View: Opens the currently saved data browser configuration file
as a read-only 'View'.
- Data Browser Perspective: Selects the Data Browser Perspective.