unique

Contents: Description, Arguments, Usage, Examples, Related Functions Supported Under Version: > 1.71 Current Davinci Version: 2.27 64-bit Safe: Yes Description Find unique elements or sub-arrays in a VAL or TEXT object. Arguments and Return Values Arguments: A 1-D or 2-D numeric array or TEXT array and another optional array of either type by which elements are selected. Return Value: A subset of the VAL or TEXT object. Usage Syntax: unique(object=VAL or TEXT, by=VAL or TEXT) 'object' - A numeric or TEXT array 'by' - A numeric or TEXT array The idea behind the function unique() is to throw out all repeats of a value or string. You may select elements from an object based on unique values of another array using 'by'. Examples dv> a_TEXT Text Buffer with 10 lines of text 1: doug 2: peter 3: paul 4: bishop 5: samuel 6: mimi 7: terwilliger 8: doug 9: paul 10: samuel dv> a_VAL 1x10x1 array of float, bsq format [40 bytes] 0.466058 0.0444799 0.883557 0.442786 0.413890 0.163879 0.189026 0.485825 0.0379430 0.297025 dv> unique(a_TEXT) Text Buffer with 7 lines of text 1: doug 2: peter 3: paul 4: bishop 5: samuel 6: mimi 7: terwilliger dv> unique(a_TEXT, by=a_VAL) Text Buffer with 7 lines of text 1: bishop 2: doug 3: doug 4: mimi 5: peter 6: samuel 7: samuel

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