Hi On 19/09/09 12:43, Johann Gail wrote:
We have some basic knowledge of the format in the wiki. Has anyone tried to generate a mdr with the known sections and see what happens on mapsource or a gps unit.
Not as far as I know. But why don't we just start. I shall kick things off by creating the main files required. As there are a lot of different variations in the format, we should concentrate on one of the smallest known variations. It looks like you can create a file with only the sections: 1, 4, 5, 6, 7, 11, 15. I shall start off with a header size of 286. MDR 1: A reverse index from maps to the other sections. MDR 4: poi types, partially known MDR 5: Cities MDR 6: unknown, wiki claims it is a list of cities but I don't believe that MDR 7: Street names, optional as may be no streets MDR 11: POI's MDR 15: Strings MDR 1 points to a subsidiary header for each map, there are at least 8 subsections in this header, some of which I partially understand and I expect that all of them lead back into the other sections. It might also be useful to try for the on-device format as that is a smaller subset. ..Steve