[SPARK-6693] add toString with max lines and width for matrix

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.3.0
• Fix Version/s: 1.4.0
• Component/s: MLlib
• Assignee: yuhao yang
• Reporter: yuhao yang
• Created: 03/Apr/15 06:48
• Updated: 14/Apr/15 07:41
• Resolved: 09/Apr/15 22:37

Description

It's kind of annoying when debugging and found you cannot print out the matrix as you want.

original toString of Matrix only print like following,
0.17810102596909183 0.5616906241468385 ... (100 total)
0.9692861997823815 0.015558159784155756 ...
0.8513015122819192 0.031523763918528847 ...
0.5396875653953941 0.3267864552779176 ...

The def toString(maxLines : Int, maxWidth : Int) is useful when debuging, logging and saving matrix to files.

Issue Links

• links to: [Github] Pull Request #5344 (hhbyyh)