Cruisers Forum

Join CruisersForum Today

Thread Tools Rate Thread Display Modes
Old 04-08-2011, 19:15   #1
Registered User

Join Date: Oct 2007
Location: Isla Saboga, Las Perlas, Panama
Boat: 1994 Hunter 37.5
Posts: 187
Thanks for the Great Work

I've been spending the last couple of days playing with the NGA charts that were just downloaded and are available at NGA Charts Status at (English)

You guys rock! Thanks to everyone who participated and made these available.

I had to upgrade from Fireworks to Photoshop to resize those humongous jpegs, but I was able to figure everyting out and even get imgkap to work and create a usable chart.

Most of the discussion on the '2700 Charts' thread is way over my head so I don't think I'm creating charts the same way. I'm cropping off the margins on mine so that the corners of the image are the corners of the chart itself. Is there a problem doing it this way?

I noticed that many charts need to be slighly rotated a fraction of a degree in one direction or the other to get the crop line parallel to the lat and lon lines. No problem there, as you can rotate .1 degree at a time if necessary until they are good. But what do you do when one side of the chart lines up, but the other edge is still slightly off?

I guess that's what happens when you are using a scan of an actual paper chart. They are not perfect to begin with. so sometimes the area is not perfectly square.

Anyway, great job! We all owe you a beer!
oldjags is offline   Reply With Quote

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
The Great Loop Tony B Other 8 20-08-2011 09:38
Cruising Through the Great Lakes tri-man Great Lakes 8 27-07-2011 09:53
Crew Available: Eager 21 Year-Old Canadian Male . . . Willing to Work for Free LonelyPlanet Crew Archives 6 26-07-2011 16:00
Yanmar Instruments Don't Work Yot Libertad General Sailing Forum 5 06-07-2011 05:00

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:59.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.