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

### 9.3.35: ``reorder`'

    `reorder columns randomly \
      |{ascending in x|y|z} \
      |{descending in x|y|z}'

Reorder the columns in various ways.

In the ``randomly`' style, the column data are shuffled randomly by index, retaining the correspondance between a given x and y. This is useful with ``draw symbol`' using colored dots -- it prevents the overpainting of one dot on another from biasing the color field to values that happened to occur near the end of the column data. If you prefer the overpainting to be done in random order, use this command to reorder the columns randomly. The random number is selected using the system ``rand`' call, with the seed being provided by the PID (process ID) of the job.

The ``ascending`' and ``descending`' styles do what you'd expect.