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 | ### 9.3.47: ``sprintf`'
    `sprintf \synonym "format" .variable. [.variable. [...]]'
Write numbers into a synonym (text string). This is useful for labelling plots. ``sprintf \out "a = %lf b = %.2f" .a. .b.`' - Create a synonym called ``\out`', and print the values of the variables ``.a.`' and ``.b.`' into it. If ``.a.`' = 1 and ``.b.`' = 0.112, then ``\out`' will be ``"a = 1 b = 0.11"`' Formatting codes are as in the C programming language, eg:
    %.2f  -- Use floating point with 2 decimal places.
    %9.2f -- As above, but number takes 9 characters.
    %e    -- Use exponential notation.
CAUTION: Variables are stored in the floating point in Gri, so you must use a format like ``"%f"`', not an integer code like ``"%d"`'. If you want an integer, use ``"%.0f"`'.