Recent Posts

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51
IMC Support / Re: Exporting from QGIS to process in IMC
« Last post by archjeb on 31 January 2025, 18:39:05 »
@fjordfischer

Maybe I'm doing something wrong, but IMC will not process my GeoTiff files. I have to convert them to KML...which is easy enough. I just use gdal_translate
'gdal_translate -of KMLSUPEROVERLAY MyTiffImage.tif   MyKMLFiles/MyKML.kml'

So if there is a way to get a native GeoTiff image processed by IMC that would be great...similar to transport the files around.

On another note, I need to get my AT file size down on a new project. 25MB of KML files turned into 32GB of AT Files with Zoom level 1 to 16.  Got to figure out why its so big.

-J
52
IMC Support / When processing - what is Total Blocks - Ignored?
« Last post by archjeb on 31 January 2025, 06:52:52 »
So when processing files with IMC, the status line on the bottom that shows the progress of jobs it shows Total Blocks, Processed and then Ignored.

What is the Ignored blocks? And why are any 'blocks' ignored?

I apologized if this is documented somewhere and I missed it.

Thanks.
53
IMC Support / Re: Exporting from QGIS to process in IMC
« Last post by archjeb on 30 January 2025, 22:45:51 »
So are you saying I don't have to convert the GeoTiff's to KML files for IMC to process them?

Have I been doing that extra step for no reason?


I tried to process some PNG files with the beta version of IMC but it didn't do anything. It says it processed them...but nothing in the working directory. I was trying PNG for compression reasons....easier to work with size wise.
54
IMC Support / Re: Exporting from QGIS to process in IMC
« Last post by fjordfischer on 30 January 2025, 20:05:56 »
Conversion is not necessary, the GeoTiffs are processed by the IMC, the most important thing is the correct coordinate reference system and the highest possible dpi with good quality of the source map and overlapping pictures.

The result is particularly good and above all zoomable if you can create GeoTiffs in several layers lavels, which works very well with aerial photographs, for example. The attached image illustrates this procedure with 3 ... 5 fictitious layers, but there can also be more if you accept the increase effort.
55
IMC Support / Exporting from QGIS to process in IMC
« Last post by archjeb on 30 January 2025, 17:08:45 »
Hi Folks,

I just joined the group. Been using IMC for a while and I like to create custom charts from various sources. Typically, I have been getting PDF maps of the ocean floor from various organizations that has bottom composition. I then load them into QGIS as a raster image after loading into the Georeferencing tool and creating lots of GCP points to convert it into a GeoTiff.

Then when I get all my layers I want I like to export it as an image with 1200dpi.

If it is only one single GeoTiff that I converted, I've used the 'Raster->Conversion->Translate' functions to convert to KML format.


My question to those that have experience; what method of exporting layers have you found the best for importing into IMC?
When I go to export to image, and then have to specify a canvas size and then the DPI...I notice that my font size of my labels will be different and sometimes everything gets skewed.
But if I have a single layer that I save as a GeoTiff and then go through the conversion utility to convert to KML, it seems to keep all my aspect ratios, and detail correctly.

A couple of years ago, I created a how-to video on doing these conversions of maps and then how to process in IMC. Hopefully this is useful for others that are starting.
https://youtu.be/3t7rL8aBw3c?feature=shared

In the meantime, if you have some suggestions on better ways to export from QGIS for IMC, please let me know.

Thank you.

Jeremy

56
IMC Support / Re: Access to the IMC Beta Tester group
« Last post by archjeb on 27 January 2025, 19:38:59 »
I can't say Thank you enough.

I just found this site yesterday. I've been using IMC for a few years exporting Georeferenced maps out of QGIS and its been trial and error for me to generate my working AT5 files.
With all the resources on this site, it is so awesome. Thank you again.

-J
57
IMC Support / Re: Access to the IMC Beta Tester group
« Last post by archjeb on 27 January 2025, 18:23:03 »
Thank you!
58
IMC Support / Re: Access to the IMC Beta Tester group
« Last post by Luke on 27 January 2025, 09:38:25 »
Added.

Welcome in the beta group. :-)
59
IMC Support / Re: Access to the IMC Beta Tester group
« Last post by archjeb on 27 January 2025, 05:30:19 »
Hi all.

I just found this site. Been using IMC for several years to build custom charts...so this is awesome to see this forum.

I would love to join the Beta testing.

I have a mix of HDS MFDs - I have a Pro and two live units networked together.

Thanks

-J
60
Humminbird Sideimaging & Downimaging, HELIX, ONIX, SOLIX, 678, 688, 798, 898, 998, 1198, etc. / Re: Humminibird Helix Update
« Last post by Luke on 17 January 2025, 17:59:30 »
Generell gilt bei Updates immer eine eigene SD Karte nutzen,
das Update nie auf eine SD Karte z.B. von Navionics oder sonstiges kopieren.

Nach dem Update kann die SD-Karte mit dem Update aus gem Gerät entfernt werden und du kannst wieder deine Navionics rein schieben.

Deine Wegpunkte "sollten" "eigentlich" nach dem Update immer noch da sein.
ABER, zur Sicherheit sollte man die sowieso von Zeit zu Zeit mal exportieren also extern sichern.
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