Working with the Time Wheel
The Time Wheel function in Analyst's Notebook is a highly visual way to analyze the time-based data on your chart.
About this task
By default the lowest value is displayed in the lightest color, through to the highest value, which is displayed in the darkest color. This setup shows high levels of activity as dark areas on the wheel. You can choose to change the palette of colors, and reverse the scale shading option, so that the highest values are represented by the lighter shades.
You can also select a linear, logarithmic, or sequential scale to change the color and what each color represents. The linear scale shows an even color distribution as each color represents a similar sized band of the range of cell values. For example, your count values are in the range 3-22. A linear interval of 4 might be used so the colors represent ranges of 1-4, 5-8, 9-12, 13-16, 17-20, 21-24.
The logarithmic scale is similar to the linear scale, but it emphasizes higher counts with each color representing progressively smaller bands of the range of cell values. This is useful where you have fewer high count values and want to emphasize the distribution. For example, 1-50, 51-75, 76-86, 87-93, 94-95.
The sequential scale is the default option and distributes color evenly across counts that contain data. Each color represents a group containing a similar number of unique cell values. For example, if the ordered unique nonzero count values are: 1, 2, 4, 6, 7, 11, 13, 17, 18, 20, 27, 36, 51, 59, 60, 63, 68, 75, 80, 81, 90 and 99, the unique count value is a total of 22. The range is broken down into ranges that contain around the same number of unique values. In this example, approximately every four numbers are taken resulting in the following: 1-7, 11-20, 27-59, 60-75, 80-99. The generated scale is not contiguous.