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Introduction
Moving the IGB display without changing zoom level is called "panning," a term borrowed from film. Sometimes these movements are Panning is also called "scrolling."
The following describes different When you are zoomed in, only part of your data are visible and much of it is off-screen. The data display area is like the viewfinder of a camera that only shows you part of the surrounding scene. Use IGB's panning controls to move the data display area and view a different part of the genomic data scene.
Because moving through the data scene is an key aspect of data exploration and analysis, IGB offers many ways to pan the IGB display.
To pan the display in IGB, you can
- Click-drag using the Move tool
- Use the horizontal or vertical scrollbars
- Click-drag the selection tool right or left
- Click the toolbar panning shortcuts
- Turn on Auto scroll
Grab tool
The grab Move tool allows you to move in any direction by click-dragging the display.
To use the grab Move tool
- Select the grab tool icon (looks like a hand) Move tool
- Click and drag over the display to move in any direction
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Scrollbars
The horizontal scroller works the same way as scrollbars and vertical scrollbars move the display up and down, similar to how scrollbars function in other applications.
To use the scrollerpan the display using the scrollbars, click the gutter or click-drag the thumb from left to right. You can also click the ends of the scrollbar.
Horizontal scrollbar viewed on Mac
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scrollbar (click to enlarge)
Vertical scrollbar (click to enlarge)
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Horizontal scroll works best when you're zoomed out. |
Click-drag left or right
Click-drag the selection tool (orange box, arrow) to move in a more controlled fashion through the data. Click anywhere near the edge of the image. Keep the mouse pressed and drag the cursor (arrow icon) to the left or right. The display will continue moving at a steady pace for as long as the click-drag is held. This click-drag interaction is similar to the select-scrolling in many word processing programs, where you can select text and then, by continuing to select/drag the cursor up or down, you scroll through the document.
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After moving to an area of interest, you will need to change back to the Select tool (arrow icon) in order to select annotations or elements within the image. |
Auto Scroll
This is a very useful feature for scanning Selection tool into the left or right side of the data display area to move left or right.
To move left or right using the Selection tool
- Select the Selection tool
- Click and hold the mouse in an empty area of the data display area
- Drag the mouse into the left or right edge of the display
- Release the mouse to stop scrolling
Arrow toolbar shortcuts
You can use the right and left arrow shortcuts to pan left or right.
Auto Scroll
Use Auto Scroll to scan through large regions at medium zoom levels. You set the speed of movement in milliseconds, and the amount of increment in pixels. IGB will move through the image, from left to right, at your a speed . Alternatively, the amount of increment will be automatically set by the region in view; zoom in and the increment will be decreased, zoom out and the increment will be increased. Autoscroll can be accessed through the Tools menu. or through the Toolbar icons. The default icon is for turning Auto Scroll on and off. A second Toolbar icon is available to access the Auto Scroll configure window.you define.
To activate autoscroll
- Click the Autoscroll icon in the toolbar
or
- Select Tools > Start Auto Scroll.
To set auto scroll speed
- Select Tools > Configure Auto Scroll...
- Enter values
- Click Apply to apply the new speed settings
- Click Start to start auto scroll
Auto Scroll configuration window
