Hi. I’m new here, and a new owner of a Garmin Etrex 30.
I’m a photographer who does a lot of travelling, so it started out I just wanted something I could use to create GPX tracklogs which Adobe Lightroom can use to automatically assign co-ordinates to photographs based on the time-stamp compared to the time in the GPX. It saves me from forgetting where places are when I go on a longer trip, and even just shooting in places that are familiar to me, it saves a lot of time in placing photographs on the map.
I’m not a massive fan of condensing everything into my phone, I prefer to have dedicated gadgets for specialist functions, I know these days people cream themselves over the idea that their phone is the only technology they need in their lives, but that’s just not me also I didn’t fancy buying an app for a phone which I might only have for a couple of years. Also, I’m a bit of a map nerd so the idea of having a device I could load maps onto, and generally do more than just create a tracklog appealed to me, and after initially looking at things that record tracklogs and then the Etrex 10 and 20, I ended up stumping up the extra for a new-over-hauled Extrex 30 since it didn’t seem like a huge amount more over a new Etrex 20 and still comes from Garmin as-new and with a warranty.
It didn’t come with topo installed but then I didn’t get it just to use topo, I installed a map from TalkyToaster http://talkytoaster.info/ukmaps.htm onto it as soon as it arrived and then set about looking into how I could create my own maps.
Now I know this forum is about OSM, and I don’t intend to use OSM exclusively, but there didn’t seem to be too many suitable forums around for discussing the creation of Garmin Vector-maps and this was the most-active. I may use some OSM data but if I do then I’ll be acquiring shapefiles from somewhere like http://download.geofabrik.de/ and then extract the data I want from it, and make any necessary adjustments to the projection before saving my own shapefile. Most of the data I plan on using is from OS Opendata https://www.ordnancesurvey.co.uk/opendatadownload/products.html. I will probably look to OSM for footpath data, while I also have some data I have created myself, such as possible locations to photograph. I’m using ArcGIS for handling and editing shapefiles, a piece of software I was trained to use at university and have enjoyed using ever since.
I’ve been looking to find out what I can about creating IMG maps, but the information is a bit piecemeal. It seems that either I find something that’s tough to get into without knowing a few basics, or I find step by step instructions to achieve a particular thing (usually creating an IMG from OSM data) that are tricky to reverse-engineer into instructions to create maps in general. I hoped I could pick up a few pointers here.
So far I’ve gotten hold of three pieces of software:
The free version of GPSMapEdit http://www.geopainting.com/ which allows me to import shapefiles, assign a TYP code to each shapefile as I import it and save the results as an .mp file.
MapTK http://www.maptk.dnsalias.com/MapTk/ which allows me to create TYP files for my own symbology, which I can then embed into the .mp file in GPSMapEdit. It can also potentially compile the .mp file into an .img map.
The free version of cGPSmapper http://www.cgpsmapper.com/index.htm which compiles .mp files into .img maps but is command-line based. MapTK however can export .mp files directly into cgpsmapper so that I don’t have to get my hands dirty with the command-line interface.
I’ve been busily creating a map of Cumbria, my home county, from the data I mentioned above. I have an .mp file in GPSMapEdit that seems to do the trick on the computer screen at least, however the problem comes when I try to compile it. Either with cGPSmapper or MapTK, I get error messages. In MapTK it is something about levels not being in descending order (though I think I have them in the order GPSMapEdit wants them, higher level numbers for smaller scales), while in cGPSmapper it is something about some region needing split, and it was compiling for 2 hours before it finally belched out an error and failed to create an IMG file. I’m not familiar with the language of Garmin mapping yet, and I think both applications were written by people for whom English isn’t a first language, so I’m a little in the dark about what it is I need to know to create maps.
I’m sorry I’ve written so much, because what I was wanting to ask is really fairly simple. I’m having difficulty looking up information on how to compile IMG maps because at the moment I don’t know what it is that I’m supposed to know, that I need to search for information on. What would be really helpful is some kind of checklist from people who to create IMG maps, of what things I need to run through in order to compile an .IMG; for example, quality X is Y - check, quality M is N - check… etc. Or more generally, what are the common reasons why an .mp file created ham-fistedly by someone who doesn’t know what they’re doing won’t complile.