====== AB / auto AB  ======

===== Icon =====
{{:icon:ab_icon.png?50|}}

===== How it works =====

**Some tool functions are only available in expert mode**

This option creates a map from saved AB points. AB points correspond to row entries and exits.

The option is only available **when at least one map is loaded into the application**.

===== Application =====

When this option is activated, a dialog window opens, allowing you to [[cluster|group points]] on the selected maps.

Once the points have been grouped, a step allows you to select whether the AB is to be used automatically or manually.

==== AB automatic ====

The option is performed in several steps:
  - Selection of A points, i.e. all points on one side of the plot, using a polygonal selection.
  - Selection of B points, i.e. all points on the opposite side of the plot, using polygonal selection.
  - Selection of the 1st row by selecting an A point and then a B point from the previously created groups.

{{ :en:ab_auto.png?400 |}}

Once these steps have been completed, the map made up of the selected points is created as follows:
  - Creation of the 1st row
  - Selection of point A (belonging to group A) closest to point A of the last row created
  - Same for point B
  - Creation of the new row using these points.

{{ :en:ab_auto_ok.png?400 |}}

==== AB manual ====

The option is used simply by selecting a point, then a second point. The selected points will be converted into a row of 2 points.

{{ :en:ab_manual1.png?400 |}}

Once the row has been created, the option restarts at step 4.

The keyboard shortcut **Ctrl + B** also starts the tool.