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Old 28-02-2021, 16:04   #1
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Import own vector data?

I work with GIS so am happy creating georeferenced data - can I create my own vector data & bring it into Openplotter (beyond just a GPX track?) I was thinking about areas I consider to be elevated hazard due to shipping (eg ferry routes) but are not adequately/strikingly marked on charts. I've looked a bit about importing vector data but all the results I saw are for charts. Thanks.
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Old 28-02-2021, 18:17   #2
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Re: Import own vector data?

The Draw plugin ( https://opencpn.org/wiki/dokuwiki/do...ty:odraw1.6_pi ) is what stands between the very complex S57 vector charts and the basic GPX used for routes, tracks and waypoints.
The data format is XML built as an extension over normal GPX, so it is pretty straight forward to implement in any custom tooling you may have.
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Old 01-03-2021, 02:25   #3
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Re: Import own vector data?

Thanks, I've loaded that plugin on my openplotter pi4 but there's nothing to see in opencpn - no buttons/controls?
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Old 01-03-2021, 08:07   #4
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Re: Import own vector data?

Plug-in enabled? OCPN restarted?
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Old 01-03-2021, 15:55   #5
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Re: Import own vector data?

Just an update in case anyone tries this at some point..
I've downloaded Opencpn onto my PC (Linux mInt) & the Draw plugin is there but only in the Flatpak version. Anyway, I exported some polyline ferry routes as a GPX file & Draw plugin doesn't really acknowledge it - it shows in the file browser but won't add to the plugin. If it's dealing with points, presumably it would struggle to make sense of polylines - Google Earth just imports the points and tries to joint the dots but fails, so it looks like the shapes are too complex for the GPX format? I need to investigate the GPX options more as I haven't really used this format other than importing GPS records.

The other option is to export a georeferenced image/create a KAP I think it is?
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Old 01-03-2021, 16:42   #6
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Re: Import own vector data?

Draw something in the Draw plugin, save it, read it, replicate. Works better than starting by what you guess it will think about your GPX.
I have seen it handle shapes with thousands of points just fine.
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