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| scanned charts on OpenCPN http://navigatrix.net/viewtopic.php?f=4&t=919 |
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| Author: | springbok [ 15 Jan 2017, 17:37 ] |
| Post subject: | scanned charts on OpenCPN |
I've been trying to scan some charts to use in OpenCPN. So far I've used the chart convertor to create a bmp which I've georeferenced, however I don't know how to proceed from here as OpenCPN doesn't seem to recognise the file. Can anyone tell me where I've gone wrong or what I need to do next? Thanks! Iain |
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| Author: | Moe [ 15 Jan 2017, 17:52 ] |
| Post subject: | Re: scanned charts on OpenCPN |
Which instruction set are you following? This is around viewtopic.php?f=4&t=325&p=1382&hilit=chart+maker#p1382 But I don't know if it's applicable to your situation, or is still a valid/current process? |
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| Author: | kaimusailing [ 30 Dec 2017, 19:03 ] |
| Post subject: | Re: scanned charts on OpenCPN |
I am now trying to map cal some .png charts that have been converted from .pcx tiles. I have never done map cal in navigatrix before, but did it long ago on a windows machine. I read the OpenCPN and SeaClear manuals and followed the instructions as closely as I was able. When I enter four calibration points on the chart and click on save calibration data, an error message pops up about division by zero. These are old charts that I really don't want to use as the only source of navigation information, but if they were loaded into OpenCPN they would be available when I was in that area, and they have pilotage information that could be very useful. I participated in several boat deliveries recently and on the last one the owner and the skipper agreed that OpenCPN running in Navigatrix on a Getac B300X was the most convenient and useful navigation device on board. The B300X is waterproof and has a screen capable of daylight viewing, so we could plop it right in front of the helmsman an pilot into port. That boat was well equipped with a Raymarine and a Garmin chartplotter, around 7 inch screens, too bad they weren't user friendly. I may fire up my old windows machine and try calibrating charts there, but it seems to be a lot of work transferring files back and forth. |
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