Software for Egg Xshape
SeaWinds/QuikSCAT egg spatial response functions are parameterized by a two dimensional polynomial in
latitude and longitude. Here sample code is provided to illustrate how to use the parameter tables.
The main program, available only lin fortran, is egg.f. It must be linked to HDF libraries.
A sample make file for HP-UX is in make_egg. A sample output in egg.DAT.gz.
The matlab script egg_shape.m (which calls myarrow.m) was used to produce the sample .jpg files.
These illustrate the 3 and 6 dB contours of egg measurements as a function of antenna rotation for each beam
and ascending/descending orbit passes of the equator
AHeggs.jpg (contoured sample result, ascending, H-pol)
DHeggs.jpg (contoured sample result, decending, H-pol)
AVeggs.jpg (contoured sample result, ascending, V-pol)
DVeggs.jpg (contoured sample result, decending, V-pol)
make_egg (compile line example, HPUX)
egg.DAT.gz (text output from example program egg.f)
egg.f (sample program, link to HDF libraries)
egg_shape.m (Matlab script to plot contoured example)
myarrow.m (Matlab routine used in egg_shape.m)