Depth Boundaries

[tontario]

I am just working my way around OpenCPN before installing it onboard. One curious item is the depth boundary parameters in the toolbox. e.g. shallow, safety and deep depths. When I make a change, these changes do not seem to be reflected on the chart e.g. shallow depth of 6 feet but no boundary noticeable. How are these types of features relflected on the chart, and should I expect to see different colours between the boundaries?

Cheers,
T

[sailorF54]

Complex issue, improvements (and warning ?) required IMHO. On this CM93 chart(46° 08.5 N 1° 12.5 W) there are (at least) 4 depth contours (isobaths): 2, 3, 5 and 10 m.
Mariners standard, Zoom detail 5, 4 colors checked in Toolbox,
Select Shallow depth 2m, Safety depth 5m, Deep depth 10m and everything is fine (pic)
Now select Shallow depth 3m: no change, unless you move that part of the chart off screen, or reopen the toolbox, or ... => refresh problem
Now select Shallow depth 4m: no visible change at all as there is no 4m isobath on that chart.
Select Shallow depth 5 m = Safety depth : you loose one colour (that's fine) but there is also a refresh problem if you revert to Shallow depth 2 ou 3 m.
(see pic of partial refresh)
___
Morals:
Shallow, Safety, and Deep depth settings should be set to the isobaths present on the specific chart one is viewing to take advantage of the 4 colour scheme.
In other words, the same shade of blue colour will not code the same depth on different charts. (see last pic)

[bdbcat]

SailorF54...

Thanks for the note.

Just to be clear:
What version of opencpn?
What version of cm93
Windows/linux?

I see no refresh problem on 2.1.0 build 620 with cm93 2009 on linux.

Thanks
Dave

[nohal]

Dave,
just confirming the behavior on Win build 620 with CM93 - Jan 2010

Pavel

[sailorF54]

Originally Posted by nohal

Dave,
just confirming the behavior on Win build 620 with CM93 - Jan 2010

Pavel

Same here

[bdbcat]

sailorF54...

OK, confirmed. Its a Windows issue only.

Technical: Windows does a screen refresh on closing the Toolbox BEFORE I have had a chance to reconfigure the Presentation Library. My intentional Refresh() after reconfigure is ignored, since there is no apparent change on the screen.

linux does not do this "hidden" refresh, so my later refresh is effective.

Yet again, the wxWidgets libraries are not perfectly compatible across platforms.....

Fixed for 2.1.0 Release.

Thanks for the tip
Dave

[tontario]

Hi all,

My config is win 7, and 1.3.6 version. I am happy to download the 2.1.0 beta. I will try it out.

Tony