Qview - Measure Tool reporting incorrect distance

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Author Name: Tammy Becker (Tammy Becker)

Original Date: 2014-02-07
Original Assignee: Tracie Sucharski

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New issue since ISIS3.4.4 (introduced and discovered in ISIS3.4.5, on macs)

This has been reported by three external users:

1. Jeff Plescia (1/15/2014-email)
   On Wed, Jan 15, 2014 at 11:36 AM, Plescia, Jeffrey B. [email protected] wrote:
   Hi,
   I seem to be having a problem with the new qview (downloaded last night)
   When using the measuring tool, the meter version seems to give bogus numbers with LROC NAC images.
   Could just be operator error, but I thought I would ask.
   Jeff

2. Mark Robinson (email-1/23/2014)
   Test cube supplied by Mark:
   /work/users/tbecker/IsisSupport/Isis3/QviewMsrTool/small_test.cub

3. Messenger Team-Brett Denevi and Carolyn
   https://isis.astrogeology.usgs.gov/IsisSupport/index.php/topic,3817.0.html

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Original Redmine Comment
Author Name: Tracie Sucharski (Tracie Sucharski)
Original Date: 2014-02-07T22:30:55Z

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I took a quick look at the measure tool code and Debbie did add code to check for projection type (triaxial vs rings). After a very quick look, I don't see anything obviously wrong. Steven also made changes to the rubberband code, but I believe that if something was wrong with the rubberband code, it would fail on level1 cubes in addition to level2. I would start with looking at the additional code in MeasureTool.cpp for TProjection vs RingPlaneProjection. I would also look at TProjection::UniversalLatitude vs TProjection::Latitude.

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Original Redmine Comment
Author Name: Tammy Becker (Tammy Becker)
Original Date: 2014-02-12T17:16:01Z

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Target version set to Jan, 2014 release because this will go out as a 'patch'.