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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 |
9.3.7: `
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`delete .variable.|\synonym [.variable.|\synonym [...]]' `delete columns [where missing]' `delete columns [randomly .fraction.]' `delete grid' `delete [x|y] scale' |
Delete some item or characteristic.
delete .variable.'
Delete definition of variable `.variable.', making it undefined.
Any number of variables or synonyms may be specified on one line.
delete \synonym'
Delete definition of synonym `\synonym', making it undefined. Any
number of variables or synonyms may be specified on one line.
delete \@alias'
Delete the item named by the alias (see Alias Synonyms).
delete' with an `&' item
Delete the item in the calling program.
delete columns'
Delete column data.
delete columns where missing'
Completely delete all column data for which any one of x, y, etc is missing.
delete columns randomly .fraction.'
Randomly select fraction `.fraction.' of the non-missing column
data, and designate them as being missing.
delete grid'
Delete grid data.
delete scale'
Delete scales for both x and y, so next `read columns' will set it.
delete x scale'
Delete scales for x, so next `read columns' will set it.
delete y scale'
Delete scales for y, so next `read columns' will set it.