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7 Tcl functions for implementing wavefront reconstruction
In this chapter we describe a set of functions that has been written
to implement the extra-focal data reduction. These routines may
be used directly from the tclsh command line if desired, or
used to construct a batch processing system for data reduction.
The functions covered in this discussion are those that are most
likely to be useful for writing a data reduction batch files.
Please note that the batch commends are undegoing development at the
moment, and we cannot guarantee compatibility in future versions of
the program. If you intend to use the ef batch mode please let us
know, so that we may consult you regarting future changes.
If you wish to write batch files you will probably find it useful to become
familiar with the Tcl language syntax.
A discussion of this subject is beyond the scope of this manual.
We recommend purchasing the book
Tcl/Tk by John Ousterhout.
Due to the way in which the Tk extension works, it is often convenient
to pass arguments to Tcl functions implicitly using global variables.
Though these global arguments are not part of the formal parameter list
to a procedure they do an equally important part of the procedures
interface.
We will therefore describe both the formal parameters, and the global
values that a Tcl function uses.
You may find yourself needing to modify some global data values before
calling a Tcl function.
For some of the more common functions, a command line wrapper function
exists, which takes care of setting the global values for you.
Laplacian Optics Inc. Email: laplace@laplacian.com