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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
index.html#Top ListOfGriCommands.html#ListOfGriCommands Gri: `debug' command Gri: `differentiate' command index.html#Top Gri: `differentiate' command

9.3.7: `delete'


`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.

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