Introduction

Zooming means: changing the scale of the display. It is essential to be able to change scale quickly when viewing and analyzing genomic data because the scale of what you need to view can vary by many orders of magnitude. You will find that as you work with large genomic data sets, you often need to "zoom" from chromosomes to exons and back again.

To make it easier to explore data quicklyexploring data easier, IGB implements a visualization technique called animated, one-dimensional semantic zooming. Animated zooming means that during zooming, the scale of the display changes in real time as you operate IGB's vertical and horizontal zoom sliders. Semantic zooming means that the appearance of data objects changes depending on how much area they occupy and the scale of the display. One-dimensional zooming means that you can change horizontal and vertical scaling independently from each other.

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