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Mike Dusenberry resolved SYSTEMML-676. -------------------------------------- Resolution: Fixed Fix Version/s: SystemML 0.10 > Improve PyDML Slicing > --------------------- > > Key: SYSTEMML-676 > URL: https://issues.apache.org/jira/browse/SYSTEMML-676 > Project: SystemML > Issue Type: Improvement > Components: Parser, PyDML > Reporter: Mike Dusenberry > Assignee: Mike Dusenberry > Fix For: SystemML 0.10 > > > Currently, slicing correctly uses inclusive lower and exclusive upper bounds. > However, a really useful piece of slicing syntax we are currently missing > from PyDML is the ability to have implicit lower or upper bounds, i.e., > {{X\[:3,]}} should return all rows up to (but not including) 3. This means > that the implicit lower bound is 0. Similarly, {{X\[2:,]}} should return all > rows starting at row 2 (0-based), which implies that the upper bound is equal > to the number of rows of {{X}}. > We should update the grammar to allow these cases, row both row and column > slicing. More generally, {{X\[:,:]}}, should also be valid, regardless if it > is useful. -- This message was sent by Atlassian JIRA (v6.3.4#6332)