Thread: Converting JNX to raster IMG

Brilliant work Alex

I have a converted a few JNX files using all the default settings (i.e. none of the optional command line parameters) and the resultant single IMG files appear in my GRSr without a problem.

However, if I convert a series (>1 map) of adjacent JNXs and load them onto my SD card, only one IMG is available and selectable in Map Setup to be viewed - all the other IMGs are not listed. These are single level JNXs which are all under 1Gb in size.

Which of the optional command line parameters do I need to specify to resolve this?

Many thanks.

Thank you Geomen - problem solved.

I followed the on-line instructions for the GMapTool and allocated numbers for FID and PID. This didn't initially resolve the problem until I spotted that the three test maps had all been given the same MapID during conversion to IMGs.

From Post #1 "MapID=<hex or decimal number>", where hex number must be either prefixed with '0x' or '$', or suffixed with 'h' - to manually set MapID, default is a random id.

I thought that the default setting gave a random id for each converted map, but it used the same one for each of the three maps I converted in succession.

Once I changed the MapIDs to unique numbers with the GMApTool all three were visible and selectable in Map Setup. Next time I will manually set the MapID in the command line.

Actually, they should be selected randomly. I've just converted a single JNX into three different IMGs, and they all got different MapIDs.

Do you remember what was the MapID in your IMGs?

Hello,

For information, I created a series of maps of Morocco using MAPC2MAPC in .jnx format to convert them to img and I had no problem.

I put all my jnx in a JNX folder and had them transformed into img in an IMG folder. This work was done in series using the post program # 108 and 113.

(Google translation)

Allin

The repeated MapID was an eight digit number - first six digits were 635235XX. I changed the XX to another two numbers, but can't remember what I replaced (and I have just emptied my recycle bin). I will convert some more without using any command parameters and see if I get the same result.

I have now converted three more Spanish JNX's with the same issue - here is an extract from the GMapTool log:


== Warning: repeated map ID number.
== Map ID 127860939 (79F00CB), file C:/Maps/05-Almeria.img, file C:/Maps/06-Lepe.img.


== Warning: repeated map ID number.
== Map ID 127860939 (79F00CB), file C:/Maps/06-Lepe.img, file C:/Maps/04-Motril.img.

Hello,

It's incredible!!
If you want, you can put these three jnx files on MEGA.nz (free) and give me the link by MP of the three files to download so that I test them.
Results in 24h

Allin

(Google translation)

I think I found the reason of the MapID duplication.
If batch_convert.cmd script or any other similar, which runs jnx2img.cmd several times in turn, the MapID generated for the first IMG is used for all subsequent maps.

@Eyelet99, have you used any batch conversion script for your JNX maps?