Tutorial:Introduction to GeoGebraScript

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GeoGebraScript is a simple way to write scripts in GeoGebra.

Useable Commands

There are not only tools to create an object in GeoGebra. You can do the same with commands and the input-bar.

Example: With the command Circle[(1,2),3] you'll get a circle with the midpoint (1,2) and the radius 3.

Even if you use the tools to create an object, the command to get this object via input bar can be found in the Properties Dialog behind Definition. So, tools are more or less only a help to enter thoose commands with the mouse. A list of all commands to create an object can be found here.

But there are some commands that do no create an object. These commands are especially for scripting. See Scripting_Commands.

Increment/Decrement Buttons

Example: * Create an integer slider, called Steps.
  • Create a Button using Button Tool
  • Enter for caption the visible label ob the button
  • Enter the script SetValue[Steps,Steps+1] oder simply Step=Step + 1

To decrement change "+" to "-". To change the size of the steps change 1 to your value.

Note: The command Step=Step + 1 is only avaiable in scripting. If you enter a command like that in the input bar, you'll get an error circular definition
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