====== About Filters ======

A //filter// is the basic building block of a [[plugins:calc:zeograph:userguide:graphs|graph]], and represents a single calculation, operation or action. Some filters may perform complex calculations like generating Perlin heightfields, whereas others may show a 'Save file' dialog box and pass the entered file name to any downstream filters. By [[plugins:calc:zeograph:userguide:filters:connect|connecting filters]], you can build up a set of operations.

For more information about filters, please see:
  * [[plugins:calc:ZeoGraph:userguide:filters:add|Adding and removing filters]]
  * [[plugins:calc:ZeoGraph:userguide:filters:display|Filter display]]
  * [[plugins:calc:ZeoGraph:userguide:filters:selection|Filter selection]]
  * [[plugins:calc:ZeoGraph:userguide:filters:options|Filter options]]
  * [[plugins:calc:ZeoGraph:userguide:filters:connect|Connecting and disconnecting filters]]
  * [[plugins:calc:ZeoGraph:filters|Filter reference]]
  * [[plugins:calc:ZeoGraph:userguide:filters:create|Creating new filters]]
For more information about other ZeoGraph concepts, please see:
  * [[plugins:calc:ZeoGraph:userguide:window|About the ZeoGraph window]]
  * [[plugins:calc:ZeoGraph:userguide:graphs|About Graphs]]
  * [[plugins:calc:ZeoGraph:userguide:pins|About Pins]]