Jon Claerbout Claerbout (1991) developed the interactive
program ed1D to allow users to experiment with various aspects
of one-dimensional seismology. Among other things, ed1D lets the user edit
a function in the space or spatial frequency domain, and see the result in
the other domain. In Figure we implement this particular aspect
of ed1D in an xtpanel. The script is 240 lines long, so we have not included
it here. It is available on the CD-ROM version of this report.
Figure 12 An xtpanel analog to Jon
Claerbout's ed1D program, for experimenting with Fourier transforms.
While this version is crude compared to the actual ed1D program,
it took only about one hour to write.