Table of Contents
QTSequencer - Understanding The Timeline
|The QT Sequencer works by capturing and displaying every quote and trade
(tick data) sequentially. When charting this way, no data is lost or absorbed
due to time compression, allowing the entire data set to be displayed.
The most noticeable difference with the QT Sequencer and other familiar types of stock charting is that time becomes non-linear. That is to say, one unit of displayed time in one area of the chart (on the x-axis) may not take up the same display space as the same unit of time in another area of the chart. Only the count of quotes and trades being plotted is linear (and is displayed on the chart timeline as well).
The main components of the Timeline are:
The following chart is a good example of the non-linear time plotting. Notice that more that 1/2 the chart is occupied with data contained within a 1 second period. However, seconds that follow have far fewer quotes/trades and therefore take up much less display spacing. This chart displays time hash marks and timestamps in 1 second increments:
In the next chart, time hash marks and timestamps represent 25 milliseconds of elapsed time. Note that the first three timestamps increment in 25 millisecond intervals, but that the fourth timestamp is 50 milliseconds from the last displayed timestamp. However, in-between these two time stamps is a darker hash mark. As it is so close to the previous time interval, there is not enough room to properly display the actual timestamp, so only the hash mark is shown.