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Board » Technical Support » QTVLM Bug Report

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Posted by Mark Posts 28 Registered at 2013-04-06 10:01:41	2016-07-05 09:45:58 - QTVLM Bug Report
	How do all Further to discussions in the RTW chat Odyss pointed out that QT had some annoying bars across the screen. I had initially put it down to a shortage of memory on my computer and the bars being nothing but a drawing issue - but on closer inspection it seems to be affecting the routing - screen shot Odyss posted in chat Version 5.3.7 The problem occurs when using saildocs and Brainaids gribs Update- Issue is also occurring in 5.3.5 Update - from Kipper All, just tracked down the Qt bug. If the grib grid resolution is 1 degree or greater, the problem occurs. Of the resolution is less than 1 degree, it goes. I've just reprocessed the Brainaid grib down to 0.5 --- Last Edited by Mark at 2016-07-05 10:37:24 ---
Posted by JB Posts 305 Registered at 2013-03-07 08:54:34	2016-07-05 10:20:41 - Re: QTVLM Bug Report
	Same problema here with the same GRIB file! Sail Fair. Attachments weather_127_global_gfs_20160705_0428.grb (361.7 KB) screenshot.png (771.0 KB)
Posted by maitai Posts 114 Registered at 2016-02-25 08:15:33	2016-07-05 10:55:10 - Re: QTVLM Bug Report
	Hello, From where is this grib coming from? Is it something generated by SOL somehow?
Posted by Mark Posts 28 Registered at 2013-04-06 10:01:41	2016-07-05 12:49:38 - Re: QTVLM Bug Report
	It is the Brainaid grib and the SailDocs gribs
Posted by maitai Posts 114 Registered at 2016-02-25 08:15:33	2016-07-05 13:14:54 - Re: QTVLM Bug Report
	The grib displays fine if the standard interpolation is used. So it's either inherent to the SOL interpolation formula, or it's a problem in our implementation of it.
Posted by Mark Posts 28 Registered at 2013-04-06 10:01:41	2016-07-05 13:25:53 - Re: QTVLM Bug Report
	Im not a tachie but Kippers point that making the grib denser (to under 0.5)and the problem being resolved seems to suggest its the way QT is handling less dense files. The conversion is a process few of us (me included!) can do!! Thank you for looking at this
Posted by Bimmer Posts 447 Registered at 2015-02-23 15:38:27	2016-07-05 14:06:31 - Re: QTVLM Bug Report
	Kipper has changed the 10:26 grib file into something usefull for QtVlm. I'll see if I can persuade him to do this to the following updates, until the guys at QT has solved the problem. They ARE alerted Attachments SOL_weather_127_global_gfs_20160705_1026.grb (9.5 MB)
Posted by Mark Posts 28 Registered at 2013-04-06 10:01:41	2016-07-05 14:21:38 - Re: QTVLM Bug Report
	Thanks Bimm
Posted by Bimmer Posts 447 Registered at 2015-02-23 15:38:27	2016-07-05 14:38:46 - Re: QTVLM Bug Report
	Another solution is to change the settings in ADVACED fro SOL to Standard. Attachments image.png (17.8 KB)
Posted by Kipper1258 Posts 174 Registered at 2015-06-18 22:08:49	2016-07-06 01:09:36 - Re: QTVLM Bug Report
	It looks like there is a transposition error. The stripes are displaced down the page by exactly one grid resolution (2.148 degrees). Attachments QtGribIssueDiagram.PNG (266.5 KB)

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