Tracks zooming

The final step in this example is to display a view around the first target site. We wish to display the entire track, along with some context on either side. In the code below, we call browserView to create a view spanning the first feature of the track, zoomed out by a factor of 10 ... 

Less important than project or timeline zooming is track level zooming. This simply controls the height of the tracks in AOD (see Figure 1.5), allowing you to see more tracks at one time (zoomed out) or to see more detail in a track (zoomed in). There are three ways to change the height of all of the tracks ... 

Each time the roller coaster zooms up and down the track, its energy changes back and forth between kinetic energy of motion and potential energy of position. 

Fig. 3. A zoomed-in look at the chain and net tracks in Fig. 1, showing the subregion chr7 127,489,736-127,489,936 of the May 2004 human genome assembly. A gap in the top-level chain has been filled in by an inverted chain at Level 2, which may also represent an orthologous region.

To zoom in threefold centered on a particular coordinate, click a position in the Base Position line at the top of the image. To quickly zoom in and view the base composition of the sequence underlying the current annotation track display, click the base button. 

Figure 2a depicts the Poincare section of the continuous flow stirrer when St = 1/4ti, and Re = 0.1. The Poincare sections are obtained by numerically tracking four passive tracer particles initially located at (0.005, -0.5), (0.005, 0.0), (0.005, 0.5) and (0.005, 1.0) during 10 convective time-scales PI/Uhs)- a quasi-periodic motion of the passive tracer particle that is initially located at (0.005, 0.0) results in a regular formation separating the upper and lower halves of the Poincare section. A zoomed image showing this KAM boundary is presented in Fig. 2c. The passive tracer particles initially located at the upper and lower halves of the channel entry cannot pass this global barrier. In addition to this, there are two unstirred zones called void zones surrounded by well stirred zone (chaotic sea) at the bottom half of the Poincare section. A zoomed image of these two void zones can be seen in Fig. 2b.

Real-World Reading Link Have you ever watched a roller coaster zoom up and down a track, or experienced the thrill of a coaster ride Each time a coaster climbs a steep grade or plunges down the other side, its energy changes from one form to another. 

X. Clady, F. Collange, F. Jurie, P. Martinet, Object tracking with a pan tilt zoom camera application to car driving assistance. IEEE International Conference on Robotics and Automation, Seoul, Korea 2, 1653-1658 (2001)... 

Zooming out using the Vertical Zoom/ScroU bar makes the tracks shorter and allows more tracks to be viewed at the same time. 

Waveforms can also be used to identify where the beat falls in rhythmic music. The two events in Figure 2.15 display the waveforms of two different media files. The top track has a spoken-word media file. The hottom track contains a drum part and displays clear periodic peaks in the waveform that line up with the beat marks along the top of the timeline. By zooming in and out on the timeline or in another window, you can see more detail in the waveform and make more accurate edits. 

Zoom in on the project and identify the section that is causing the clipping. You will certainly need to zoom in time, allowing you more precise control, but it may also be useful to zoom vertically or to change the track height so the waveform is more clearly seen. 

The entire project will shift relative to the video (and any other One-Shot tracks, such as the audio from the video file) as a result of a change in tempo. In this example, the tempo will speed up to 128.564, as you can see in Figure 11.7. If you zoom in on the marker position, it will still be exactly where it was before in the video and, thus, at exactly the same position relative to time in the real world. In relation to the project, looped or Beatmapped tracks, and events, however, it is in a completely different position. The tempo difference from 120 to 128 is not that great, but it is noticeable even though ACID will make sure the pitch of the events does not shift. Here we moved only a little over a measure in a project that lasts almost four minutes, but... 

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