DVH cursor not tracking with curve

[GoogleCodeExporter]

What steps will reproduce the problem?

1. Load test data set (breast plan)
2. Select Borders or Nodes
3. Select Dose Constraint (D_)
4. Scroll horizontal constraint bar

What is the expected output? What do you see instead?

Constraint marker should travel smoothly along DVH curve, but instead it
jumps along a stair-step path. This is due to the curve being interpolated
but the marker following the data points themselves. Should all DVH's have
the same end value instead of being rescaled along the x axis?

What version of the product are you using? On what operating system?

Oct. 18th update on Ubuntu 9.04, matplotlib 0.98.5.2, WxMpl 1.3.1, WxPython
2.8.9.1

Please provide any additional information below.

Dicompyler!!!

Original issue reported on code.google.com by roy.coding@gmail.com on 30 Oct 2009 at 7:54

Attachments:

• dicompyler-bug-1.png

[GoogleCodeExporter]

There are two issues here:
1. Constraint marker traveling smoothly along the DVH curve when data for the 
structure is less than 100 points, so it is 
interpolated.

This can be addressed by reducing the interval on the scrollbar to only plot 
what data is available instead of all 
interpolated points.

2. DVHs being rescaled instead of having the same end value.

This is not so much an issue (I feel), as it allows you to see the whole curve 
for each structure. At some point, when 
multiple structures are superimposed on each other, the scale would be the same 
for all plotted structures. As of now, 
that hasn't been implemented yet.

Original comment by bastula on 31 Oct 2009 at 12:15

[GoogleCodeExporter]

DVH rescaling will be broken out to a separate issue.

Original comment by bastula on 1 Nov 2009 at 4:04

• Changed title: DVH plots not uniformly scaled
• Changed state: Accepted

[GoogleCodeExporter]

Original comment by bastula on 1 Nov 2009 at 4:17

• Changed title: DVH cursor not tracking with curve