Export to JNX. Incorrect area cropping.

tikhpetr
tikhpetr
in Raster Data

Hi!

I load the raster, then the area through which I cropp it.

1.png


2.png
3.png

I then export this raster to JNX, also using the crop.

4.png

However, in the JNX file viewer I see this:

5.png

Please tell me how to remove this malaria frame. 

Thank you!

Answers

  • bmg_mike
    bmg_mike Global Mapper Guru Moderator, Trusted User

    This is happening because the JNX format internally uses JPG images for the tiles, and JPG does not support transparency. So any tile that contains valid data will exist and fill in with the current background color where no valid data exists in the tile.

    Thanks,

    Mike

    Global Mapper Guru

  • tikhpetr
    tikhpetr

    bmg_mike,

    hi!

    Thank you very much for your answer! I assumed that this was so. But I saw JNX files made using another utility (map2jnx), the edges were smooth.

    I don't have this utility at hand, but I'll try to figure it out. I will report on the results.

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