Gri: contouring example

Examples 1: Introduction 2: Simple example 3: Fancy example 4: Running Gri 5: Programming Gri 6: General Issues 7: X-Y Plots 8: Contour Plots 9: Image Plots 10: Examples 11: Handling Data 12: Gri Commands 13: Gri Extras 14: Evolution of Gri 15: Installing Gri 16: Gri Bugs 17: System Tools 18: Acknowledgments 19: License 20: Newsgroup 21: Concept Index | ## 10.2: Contouring This example plots a section of dT/drho vs x and rho (actually, sigma-t, as the label indicates). The contours are unlabelled; I'm only interested in the zero crossings. There are some other useful tricks in this example, such as calling ``awk`' and ``wc`' from the unix system. (In the plot shown, all ``query`' questions were answered with carriage return, yielding the defaults; the ``-p`' flag was specified on execution, so the time stamp was not drawn.) The command-file.