Defining the axis data type and number format
The axis data type and format determine how the chart builder arranges the data that appears on an axis. An axis has one of the following data types:
Linear
This axis type spaces values evenly.
Logarithmic
This axis type spaces values based on the ratio of their values. For example, values 1 and 10 are the same distance apart as 10 and 100.
DateTime
This axis type shows data on a date or time scale.
Text
This axis type displays text only and spaces words evenly. The location of a data point on a text axis does not indicate its size. Typically, a text axis is a category axis.