Thread: Converting JNX to raster IMG

Hello hwdean,

It was written on page 1

After you unpack the archive, there will be Tools folder with two subfolders.
Please copy the contents of MPC\Tools\bld_gmap32 folder into extracted Tools\bld_gmap32 folder, and also copy you MPC license file into the same folder with License.mpl name.
Next, copy gmt.exe file from GmapTool\gmt.
Make sure the script will have permissions to create and delete subfolders in the folder it is extracted to.
That's it for the initial setup.

When I first started, I made the same mistake and it was Alex who corrected me.

Allin

I have converted some separate 1-25k and 1-50k topo maps of the same areas from JNX to IMG format using Alex's method.

In GMapTool, I changed the draw priority of the 1-25k maps to 31 and the 1-50k maps to 25 with the intention that on zooming-in the map would change from 1-25k to 1-50k at 200m. In my GPS device, each map is visible if selected individually, however if both the 1-50k and 1-25k maps are enabled at the same time, the 1-50k is the only map that displays on zooming-in.

Any ideas on how to resolve this?

Hello

Any ideas on how to resolve this?

To start with, with GmapTool I would try to attach (Join) the 1/25000 and 1/50000 files

Allin

Thanks Allin

I will give this a try. I will also try making a two level JNX and converting this to an IMG. BTW they are both raster maps.

Eyelet

Hello Allin

I have been doing further tests over the past couple of days. The good news is that with MAPC2MAPC I can make a two-level JPX with the 1-25k and 1-50k layers of raster maps, set the zoom levels in JNX Customizer and convert this JPX to an IMG. This IMG can be viewed in BC and on my device, and changes between the 1-25k and 1-50k mapping according to the zoom level as expected.

The bad news is that if I make a separate JPX for each, choosing the same zoom levels as before and convert to two IMGs before joining them in GMapTool to a single IMG, no matter what settings I adjust, only the 1-50 layer is ever visible in BC or the device when fully zoomed-in. I have tried various zoom/scale levels in creating the JNXs and in GMT, changed the draw priorities, tried a few different TRE parameters (Map Series IDs). I must be missing something important or maybe I am bumping up against a limitation of Alex's method as mentioned in post 1?

Have you been able to able to do this conversion with two separate raster JNXs?

Eyelet

Hello Eyelet99

Have you been able to able to do this conversion with two separate raster JNXs?

Using MAPC2MAPC ==> JNX Customizer ==> Jnx2Img ==> GmapTool.
Alas no I have exactly the same problem as you.
I was counting on you to find a solution.

Allin
(google translation)