Data
From QuB
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Contents |
Interaction
The Data window displays one or more sets of simulated or acquired data. It consists of two display panels (the low resolution and high resolution displays) on the left side and four lists (files, results, lists, selections) on the right. The upper display is the low-resolution window which displays lines (traces) of data. A region of data may be selected in the upper panel using the mouse and it will be displayed in the high resolution display below it. In the diagram below, the end of the third trace has been selected, so it is colored blue and is shown expanded in the lower panel. It is possible to select data across multiple traces, and this may in fact cause the high resolution panel to display less detail than the low resolution panel .
Scrolling Data : You can resize the two panels by dragging the border between them up or down. Browsing through the data can be done using either the scroll bar and the mouse, or the keyboard up and down arrow keys.
Selecting Data : To select a range of data, click and hold the left mouse button on the data and scroll over a selection of data. The highlighted data will change color and the high-resolution window will be updated.
Copy, Cut, & Paste : The data file can be edited just like a word document. On the pop-up menu (which you get by right-clicking anywhere in the data window or double-clicking any data file in the Files column), you will find commands such as Cut, Copy, Paste, Delete, and Undo.
Tip Window
If you position the mouse cursor over data in either panel a yellow ‘Tips Window’ will appear with information about data that is selected within the frame. You can also prevent the display of the tip window by clicking with the right mouse button on the filename in the files list. A popup menu will be displayed which includes an option to toggle the tip window functionality on and off. The tip window includes for the selected data the following :
- Start
- the start time in seconds or milliseconds
- Length
- the length in seconds or milliseconds
- Avg
- the mean amplitude
- Std
- the standard deviation
- Points
- the number of points and the location of the selection (in points)
- Segment
- the segment number the selection begins in
Keyboard Shortcuts
see Hotkeys and Shortcuts#Data Window
Files
This panel contains a list of open data files. Right clicking on a filename presents a menu where you can hide or show the tip window, close the file, or open the properties dialogue.
Results
This panel contains a list of result sets created by some of the action buttons such as IDL and MIL. The selected result set is shown in the Results window. Only the 7 most recent result sets are kept by default. You can Right Click an item in this list to present a menu where you can delete a result set or mark a result set as held so it does not get deleted when it is not among the most recent.
Selection Lists
A selection list is a group of data selections. Selection lists are created by several methods, including manually by using the L and S keys or as a result of the Preprocessing:Chop Data, Preprocessing:Chop Idl, AllS, AddL, or IdlS actions. They are useful for organizing data, and are utilized by many of the QuB action buttons which can be executed on a single selection, selection list, entire file, or list of files. Right clicking on a list name presents a menu where you can save or load selection lists to text files, rename lists or delete them. Left clicking on a list name makes that list the current list. The Data Overlap window shows all the selections in a list, overlaid or averaged.
See also: Data Theory#Selection Lists, Actions:Lists
Selections
The selections panel shows a list of ranges measured in points for the selections in the current selection list. Right clicking on a selection enables you to delete the selection or change its label and note properties. If you add a label it appears preceding the range in the selections panel and with the data in the data panel if the List Show option is selected in the main toolbar. Double clicking on a selection in the list will highlight that selection in the data panel and reposition the cursor.
Toolbar
On the main toolbar and action bar there are also items which affect the display of data in the data window.
The Auto selection is used to automatically scale and shift the data trace for maximum visibility within the window.
When 'Auto' is not selected, the 5 icons to the right of it can be used to scale (+ or -) or translate (up or down) the data trace within the window.
The ? question mark icon sets the scaling and translation for maximum visibility of the data which is currently selected.
The Fc [khz] check box, the numeric entry adjacent to it and the slider bar control the application of a filter to the data.
Bline apply determines whether any baseline corrections to the data are applied in the display.
Idl show and above allow the display of the idealization overlaid on the data or as a separate trace above the data.
In the above data window the idealization is shown in red overlaid on the actual data.
List show highlights the visible sections of the currently selected list as with the 3 gray blocks in the example data at the top of the page.
Right-click Menu
Right click in the high or low resolution data panel to present the popup menu. This menu contains items for many of the actions described on the keystrokes section, as well as some items only accessible from this menu.
Expand zooms in on the selection in the high-res panel, expanding it to fill the high-res panel.
Un-Expand zooms the high-res panel back out to how it was before Expand
Set baseline adds a constant vertical offset to the data so the average of the selection is 0. It also makes the "Baseline Selection" list, whose data is used to 'Erase' a selection.
Add a baseline node - see Data Theory#Baseline
Baseline - Delete selected nodes will remove all baseline nodes within the current selection.
Baseline - Delete all nodes removes all baseline nodes in the file.
Baseline - Add linear fit node adds a baseline node at the start and the end of the selection which correspond to a linear least squares fit of the data in the selection.
Add a marker
Delete a marker
Cut as text
Copy as text
Paste
Delete removes the selected data from the file, creating a segment break
Erase overwrites the selected data with data from the "Baseline Selection" list
Break Segment puts a segment break at the cursor location
Undo undoes the last data-editing action such as cut/paste/delete
Join IDL extends the idealization event at the start of the selection across the entire selection to become a single event.
Delete IDL removes a section of the idealization.
Print opens the windows printer selection dialogue followed by the same image settings dialogue used for the Copy Image option, then sends the image to the printer.
Copy Image presents the image settings dialogue, then copies the view of the data to the clipboard.
Properties opens the Data Properties dialog.
Experimental conditions and the cursor
An experimental variable such as Voltage can be assigned to an A/D Channel (see Data Properties#Experimental Conditions). The variable's value is used by the model to display effective rate constants. The model uses the variable's value at the cursor point (if show k1 is unchecked). Click a data point to see the effective rates there. If a rate is reading 0.0, click a stimulated piece of data.
See Also
- Menu Reference#File -- Open, save and close data; load and save idealization and baseline
- Data Overlap window -- Draws all selections in a selection list, overlaid or averaged
- Data Notes window -- Text-entry window's contents are saved alongside data, in the Session file.
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