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Old 29-05-2014, 23:27   #1
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How Are BSBs Created?

How are raster charts created?

NOAA has released PDFs of virtually all American charts. I'm using a graphics program and a 13x19 printer to make my own chart books.

To take it one step further, is it possible to take these graphics and create a BSB out of them, that I could load in OpenCPN?
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Old 29-05-2014, 23:49   #2
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Re: How Are BSBs Created?

Why do you want to do this?

You have already all the charts in electronic format either as S57 vector charts or as RNCs (raster) for download at the NOAA site?

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Old 30-05-2014, 01:32   #3
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Re: How Are BSBs Created?

Yes, I have all the charts.

There are a number of reasons I'd want to do it, one of which is the ability to update charts promptly.

Do you know how BSBs are created?
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Old 30-05-2014, 01:49   #4
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Re: How Are BSBs Created?

I know how to create raster charts.

The weather fax plugin can convert images into kap files.
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Old 30-05-2014, 04:49   #5
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Re: How Are BSBs Created?

GE2KAP does it fairly easily, provided they are not at too small a scale, as only two opposite corners are used.
DownloadÂ*
Otherwise you have to enter a lot of coordinates in command line apps, a real pain in the ...
Anyway, have a look at the wiki...It's there...
Chart Conversion | Official OpenCPN Homepage
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Old 30-05-2014, 15:48   #6
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Re: How Are BSBs Created?

Thank you!

Geez, what a nightmare...
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Old 30-05-2014, 16:33   #7
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Re: How Are BSBs Created?

I don't really understand your reasoning. NOAA makes available for download all US charts in both raster and vector formats for free. They update them weekly.

How often do you need to update your electronic charts that you are willing to download pdf files, convert them to proper tiff format with a graphics program using resolution and color depth constraints, georeference them using a different program, create header information and form it into files using another program, and put all of this altogether into a KAP format with yet another program? Doing this takes 10-20 minutes per chart.

Since NOAA only issues mariner updates weekly - the same frequency as they update their electronic charts - I assume it is your own updates you wish to apply daily?

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Old 30-05-2014, 16:53   #8
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Re: How Are BSBs Created?

Jammer...
What exactly is a nightmare? The process is kind of trivial
Code:
imgkap XXX.kap XXXheader.txt XXX.png
paint whatever you want on XXX.png
Code:
imgkap XXX.png XXXheader.txt MyBetterXXX.kap
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Old 03-06-2014, 18:39   #9
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Re: How Are BSBs Created?

I should have specified "on a Mac".

An .exe doesn't run on a Mac.

In the very worst case, I could use a command line in Terminal, but it's been ten years since I had to do that.
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Old 03-06-2014, 18:48   #10
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Re: How Are BSBs Created?

Quote:
Originally Posted by Jammer Six View Post
I should have specified "on a Mac".





An .exe doesn't run on a Mac.





In the very worst case, I could use a command line in Terminal, but it's been ten years since I had to do that.


Why don't you dual-boot your mac, or run a virtual machine (PC) on it? Gives a lot of possibilities...
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Old 03-06-2014, 19:36   #11
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Re: How Are BSBs Created?

Jammer...
All you need then is imgkap built for a Mac (Get it from https://drive.google.com/file/d/0B3X...it?usp=sharing - It works on the machine where I just built it (OS X 10.8.5), no idea if on any Mac out there).
Save it somewhere reasonable (your home dir - the one where you are when you start the Terminal - is a good option) make it executable using
Code:
chmod +x imgkap
and use the steps I posted above.
And sorry, I only have access to a Mac over a remote secure shell session, so can't tell you how to do it using the GUI clicking there.

Pavel
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Old 03-06-2014, 19:55   #12
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Re: How Are BSBs Created?

BSB? Boy Scout Babes?

Boy, talk about making something easy really hard...
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Old 04-06-2014, 01:32   #13
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Re: How Are BSBs Created?

Well, I got it built, I think.

But I don't see how to use it. Running those commands on the command line makes it generate an error when I replace it with the name of an image.
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Old 04-06-2014, 06:23   #14
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Re: How Are BSBs Created?

Jammer...
Which of the commands (post exactly the one you run) and what does the error say (exactly, copy-paste it here)?
Help me help you a bit harder, please...

Pavel
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Old 04-06-2014, 14:32   #15
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Re: How Are BSBs Created?

Okay, I will, and I appreciate the help.
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