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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 |
9.3.6: `
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`debug [.n.]|[clipped values in draw commands]|off' |
With no optional parameters, sets the value of `..debug..' to 1.
(Normally, `..debug..' is 0.) You may use `..debug..' in
`if'
statements, etc. Note that `..debug..' is also set to 1 when gri
is invoked with the commandline switch `-d'.
With `.n.' specified, `..debug..' is set to `.n.'; a
value of zero for `.n.' turns debugging off, while 1 turns it on.
Higher values may be used for deeper debugging, if you choose:
if {rpn ..debug.. 2 <}
# Code to do if ..debug.. is greater than 2.
end if
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Note that you can assign to `..debug..' as you can to any other
variable; `debug .n.' is equivalent to `..debug.. = .n.'.
With the `clipped' option, Gri prints any clipped data encountered
during any `draw ...' commands, EXCEPT in the case of
`postscript' clipping, where no check is possible. (Note that
`..debug..' is not affected.)
All these forms of debugging are cancelled by `debug off'.
