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  1. #1
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    help Garmin custom map tiling software

    Hello!

    Let me start by saying that I checked Google, searched the forum and Garmin tutorials page but did not manage to find a good answer.

    So... when making Garmin custom maps from jpg files (usually scanned old paper maps) - I use image overlay in Google Erath , calibrate, export to kmz etc - but then I have to use a program to split the (usually) large map into tiles to see on my Garmin Montana.

    I haven't done this in a while and now I see that Okmap software that I used is not free anymore

    Any other free programs to simply split a jpeg/kmz custom map into tiles?

    Thank you

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  3. #2
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    How big is your JPEG map? Do you try to use JNX format for Montana?
    Love your wife? Buy yourself a GPS for answering to her favorite question: "Dear, where are you?".

  4. #3
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    free

    I do not use JNX format at all; Just a large jpg image overlay (more than 3MB) that I need to cut into tiles of less than 3 MB.

    Here is a link to Garmin limitations:
    Code:
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    So as you can see I need to have maximum 500 jpg /KMZ and 3MB maximum size of each tile.


    Later edit: I have found a free program just for map tiling called KMZFactory - it's very basic and the interface is spartan but it gets the job done ... and FREE
    Last edited by james222; 12th November 2015 at 14:51.

  5. #4
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    Use free JNX and you will be free from all limitation!

    number of levels of detail: JNX up to 5 KMZ - only one
    number of tiles: JNX - up to 50000 per level KMZ -max. 100 per device (!), up to 500 in Montana
    subjective rendering speed: JNX - high KMZ - low
    supported image type: JNX - any type KMZ - Jpeg
    image size: JNX - up to several Gb KMZ - 3MB
    Love your wife? Buy yourself a GPS for answering to her favorite question: "Dear, where are you?".

  6. #5
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    Thanks for the info. I will look into JNX files but from what I see they require changing Garmin firmware to work on device.

    One advantage however of jpg/KMZ combination is that they are very easy to make in Google Earth, work in any device without any changes to firmware.
    Last edited by james222; 13th November 2015 at 10:51.

  7. #6
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    Quote Originally Posted by james222 View Post
    Thanks for the info. I will look into JNX files but from what I see they require changing Garmin firmware to work on device.
    In any case you need to update device from time to time! I do not force to use JNX to you, but for me it is the significant improvement of Garmin device.
    Love your wife? Buy yourself a GPS for answering to her favorite question: "Dear, where are you?".

 

 

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