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UK Ordnance Survey maps
June 5, 2012
10:54 pm
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zpyder
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So, a month on, and I've finally got some OS data on the 710. here are the steps I used to get there, in case anyone else is wondering:

The data I downloaded is from Edina Digimap, an educational OS data provider for universities etc. I downloaded a 1:1000 scale set of tiles of a site I am going to be surveying this summer. However the method should work for any such OS data, with a few settings tweaks.

I used Esri ArcMap 10.

1:
After downloading and extracting all the tiles into a folder. I used the "Workspace to raster dataset" tool in the toolbox. This is found in "Data Management Tools -> Raster -> Raster Dataset".

2:
For the tool to work you need an existing raster file. I created this with the "Create raster dataset" tool. I used default options, setting the raster to a jpg (I had too many issues with tifs) and the number of bands to 3.

3:
Once the raster file was made, I used the workspace to raster tool. The input workspace was set to the folder with all the tiles in. Target raster dataset was set to the blank raster jpg. Everything else was left to default. I let this run and eventually I had a single jpg file containing the 30+ OS tiles.

4:
The next step was to use RMP Maker. I ran the program, and imported the jpg file. For the control points I used the 4 corners of the map. To work out the WGS84 coordinates (OS data is in OSGB1936 grid reference format) I used the conversion tools on nearby.org. By looking at the properties of the jpg in Arc I could see the extent of the file, EG, top 396000m bottom 400 000m etc. Using this I could convert each corners coordinates and enter this into RMP maker.

5:
Once this was done. I calibrated and generated the RMP file. I then had to use "RMP Tools" to fix the RMP file to run on the 710.

This is it, it works nicely. The zoom level is a little too close for liking, at some point I'll look in to how to change the zoom levels. I hope that this might be useful for anyone else who was in the same boat as me. I'll try to answer any questions if there are any.

April 11, 2012
1:24 pm
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zpyder
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A few years ago the Ordnance Survey created the Open Data, open source imagery, which is freely accessible to the public:

https://www.ordnancesurvey.co......ducts.html

One of the open data products is Street View, which is a 1:10k scale raster map.

I'm currently trying to figure out how to get this onto my 710, to see how it compares to the OS Explorer 1:50k maps that are easily created through MOBAC.

Currently the issue I am trying to solve is that the maps are supplied as tiled .tifs by grid reference. I'm sat at a desk with ArcGIS in the hopes of combining the tiles into 1 georeferenced jpg or similar, which I can convert to an .rmp file using TritonRMP

If this is common knowledge, I apologise, and if anyone else has done this before, or knows of an easier way to get the 1:10k Streetview data onto an Explorist, please do share. It's not come up in any of my searches, which is why I've created this thread, so anyone else wanting to do the same can see how etc...

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