Gri: simple example revisited

Chapters: 1: Introduction 2: Simple example 3: Invocation 4: Finer Control 5: X-Y Plots 6: Contour Plots 7: Image Plots 8: Examples 9: Gri Commands 10: Programming 11: Environment 12: Emacs Mode 13: History 14: Installation 15: Gri Bugs 16: Test Suite 17: Gri in Press 18: Acknowledgments 19: License Indices: Concepts Commands Variables | ## 4.1: An example Below is a followup to the previous example, which names the x and the y axes.
    # Fancier version of Example 1
    open example1.dat
    read columns x y
    set x name "Time, hours"
    set y name "U, m/s"
    draw curve
The difference is that the x and y axes are named with a ``set`' command. There are many ``set`' commands, and they are all pretty simple, e.g. ``set x size 15`' makes the x-axis be 15 centimeters long, instead of the default of 10 centimeters. Indeed, you can control anything you want in gri, e.g. graph size, line width, fonts, etc etc. Speaking of fonts, the ``$\alpha$`' type of latex formatting of Greek letters is supported in a limited way. Also, Gri handles ISO-Latin-1 encodings as well as the U.S. style. The example below illustrates a few more ``set`' commands. This example is intentionally complicated, being about a good example of the level of complexity of many plots made by Gri. Read the comments to see what is being done, and consult the plot as you read the commandfile. The command-file.