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Search: Posts Made By: HappySeagull
Forum: OpenCPN 07-02-2016, 12:25
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

good for you. If you have an official up-to-date chart that you are sure is wrong, it does no harm to mention it to the HO.
A long while ago, a friend of mine noticed a rock only awash at low...
Forum: OpenCPN 07-02-2016, 08:49
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

Carcode ...the OP is attempting to calibrate a "kap" chart using cm93. Read back a ways...
Forum: OpenCPN 07-02-2016, 08:17
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

well, I'll bite.
As to cm93, it uses several scales of charts. It's not unusual for any small scale charts to have an iffy accuracy . Remember what a similar-scale paper chart is like....If it...
Forum: OpenCPN 02-02-2016, 11:54
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

You would know best , however as a point of opinion that might save intense trouble fitting an image to suit cm93....
I would not trust cm93 so far as that. They are ok, but are themselves based...
Forum: OpenCPN 01-02-2016, 11:39
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

Do you mean the exclamation mark in the " ! - DTM/0.60,16.80"
that bcn spotted? that seems a good possibility .




I can't see anything here at the link...but it reminds me to mention the ...
Forum: OpenCPN 01-02-2016, 11:23
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

oh gee. I mean 60 deg lat.(cos60=.5)
Forum: OpenCPN 31-01-2016, 12:54
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

Well, the bessel 1841 probably isn't hurting anything because opencpn isn't using it and the chart is apparently calibrated to wgs 84 anyways...But it's a peeve of mine is all and could be trouble...
Forum: OpenCPN 31-01-2016, 11:12
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

I read bcn's pdf and apparently maptech likes to have GD=eclectic too (section 5.2 "Image file parameters" but that is dumb.If it bugs you that wgs84 grid doesn't match the drawn lines of lat and...
Forum: OpenCPN 31-01-2016, 10:20
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

no I don't! "! - " looks like the progam converting added it?
otherwise as moseriw said except that it is a correction that should be used to make a chart conform to wgs 84 with GD= wgs 84 in the...
Forum: OpenCPN 31-01-2016, 08:56
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

118054

here's a cmd(or bat) file I use for single kaps on a windows machine (XP or W7)
Change the ".txt" to ".cmd" but read it first as text because it tells you what to do...and, so you'll know...
Forum: OpenCPN 31-01-2016, 08:46
Replies: 43
Views: 3,963
Posted By HappySeagull
Re: KAP Files Help appreciated

118053

here, I made a fast blank with your dimensions but wgs84 on imgkap. You can try it -seems to display ok

My first guess:
I note that imgkap re-sized the chart picture.
Extend...
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