There are two version of Nautical charts from what I can see:
1. DNC from www.nga.mil that you pointed at in VPF format
2. NOAA ENC charts
Here is a link explaining the difference:
http://www.nauticalcharts.noaa.gov/mcd/learn_diffENC_DNC.html
The ENC charts are available in S57 format and maybe as shapefiles. I
played with the ENC charts a while ago with some success.
I thought OGR supported reading VPF files for VMAP0 data using (OGDI
Vectors (VPF, VMAP, DCW)). But I have no idea if it would work for DNC data.
You might be able to read these with openmap.bbn.com
http://openmap.bbn.com/doc/OpenMapDevGuide.pdf
see section 8.5
-Steve
On 11/22/2015 4:14 PM, Hans Rijsdijk wrote:
Thanks for your response.
One can get the DNC charts free off the US website (although they may
not make all details available).
For most of my charts I use OpenCPN, but this doesn't run the DNC charts.
Any suggestions of other open source marine software?
Cheers
Hans
On 22 Nov 2015, at 9:40 PM, Brent Wood <[email protected]
<mailto:[email protected]>> wrote:
I think you'll find the Digital Nautical Chart format is not supported
by GDAL.
However there are open source marine navigational software
applications that will read them, but apart from USA & New Zealand,
I'm not aware of any countries that provide their charts for free.
Brent Wood
------------------------------------------------------------------------
*From:* Hans Rijsdijk <[email protected] <mailto:[email protected]>>
*To:* Nicolas Cadieux <[email protected]
<mailto:[email protected]>>
*Cc:* "[email protected] <mailto:[email protected]>"
<[email protected] <mailto:[email protected]>>
*Sent:* Sunday, November 22, 2015 10:06 PM
*Subject:* Re: [gdal-dev] Reading DNC nautical charts
Hi,
Here is a link:
https://www.nga.mil/ProductsServices/NauticalHydrographicBathymetricProduct/Pages/DigitalNauticalChart.aspx
I have also attached 2 of the charts.
Hope this is useful.
Cheers
Hans
*From: *Nicolas Cadieux
*Sent: *Sunday, 22 November 2015 4:49 PM
*To: *Hans Rijsdijk
*Cc: *[email protected] <mailto:[email protected]>
*Subject: *Re: [gdal-dev] Reading DNC nautical charts
Hi,
If you have a link to the charts, I could look at it and see the
format and see if they are georeferenced (if coordinates like
longitude and latitudes is included in the image file). They should
be. If so, I would recommend you use a GIS software like QGIS to
visualise the maps and manipulate the map. QGIS has plugins that
will permit you to plug in a GPS and to track the movement for navigation.
QGIS uses the GDAL library to open, save and manipulate maps images
(rasters) and point, line and polygons (vector data) so you get all
the power of GDAL and a user friendly interface.
Nicolas Cadieux M.Sc.
Les Entreprises Archéotec inc.
8548, rue Saint-Denis Montréal H2P 2H2
Téléphone: 514.381.5112 Fax: 514.381.4995
www.archeotec.ca <http://www.archeotec.ca>
On Nov 20, 2015 4:13 PM, Hans Rijsdijk <[email protected]
<mailto:[email protected]>> wrote:
>
> Can anyone advise if DNC nautical charts can be used on the gdal
software and, if so even better with a gps? In other words for navigation.
> I am not familiar with gdal software so a 'fatherly' response will
be greatly appreciated.
>
> Cheers
>
> Hans
> _______________________________________________
> gdal-dev mailing list
> [email protected] <mailto:[email protected]>
> http://lists.osgeo.org/mailman/listinfo/gdal-dev
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