Edit Major Tick Spacing on an Axis

On the Scaling page in the axis properties there are three options that control the spacing of major ticks along the selected axis: the First major tick, Last major tick, and Major interval boxes.

To edit major ticks on an axis:

  1. Click once on the axis to select it.

  2. In the Properties window, click the Scaling tab.

  3. You can specify the position for the first and last major ticks, and the spacing in data units between each major tick along the axis.

  4. The First major tick box contains the value of the minimum major tick mark. This value is expressed in data units. The First major tick does not have to be the same as the axis minimum but it cannot be less than the axis minimum.

  5. The Last major tick box contains the value of the maximum allowed major tick. This value is expressed in data units. The Last major tick does not have to be the same as the axis maximum but it cannot be greater than the axis maximum.

  6. The Major interval box contains the value of the spacing, in data units, between major ticks along the selected axis. The major tick marks occur at values,

    Tick = First Major Tick + n * Major Interval n=0,1,...,N

    where N is the largest integer such that Tick <= Last Major Tick. Thus, a tick mark is placed at the value of the Last major tick only if the interval (Last Major Tick - First Major Tick) is evenly divisible by Major interval.

  7. The axis is redrawn with the selected tick parameters.

By setting the First major tick, Last major tick and Major interval values, you can control the position of major ticks along the axis.

See Also

Axis Scaling

Introduction to Map Axes

Map Scale