Difference between revisions of "CrossRatio Command"
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| − | <noinclude>{{Manual Page | + | <noinclude>{{Manual Page|version=5.0}}</noinclude>{{command|other}} |
| − | ; CrossRatio | + | ; CrossRatio( <small><</small>Point A<small>></small>, <small><</small>Point B<small>></small>, <small><</small>Point C<small>></small>, <small><</small>Point D<small>></small> ):Calculates the cross ratio ''λ'' of four collinear points ''A'', ''B'', ''C'' and ''D'', where:<br>''λ = [[AffineRatio Command|AffineRatio[B, C, D]]] / [[AffineRatio Command|AffineRatio[A, C, D]]].'' |
| + | :{{example|1=<code><nowiki>CrossRatio((-1, 1), (1, 1), (3, 1), (4, 1))</nowiki></code> yields ''1.2''}} | ||
Latest revision as of 10:04, 11 October 2017
- CrossRatio( <Point A>, <Point B>, <Point C>, <Point D> )
- Calculates the cross ratio λ of four collinear points A, B, C and D, where:
λ = AffineRatio[B, C, D] / AffineRatio[A, C, D]. - Example:
CrossRatio((-1, 1), (1, 1), (3, 1), (4, 1))yields 1.2
