No operation

New in version 6.1.0.

Pass a coordinate through unchanged.

Alias	noop
Domain	4D
Input type	Any
Output type	Any

The no operation is a dummy operation that returns whatever is passed to it as seen in this example:

$ echo 12 34 56 78 | cct +proj=noop
  12.0000        34.0000       56.0000       78.0000

The operation has no options and default options will not affect the output.