What do you use a PDA for? I may be the odd one here but I'm having an HP PDA since the last 4 years, and I use it intensively, but not for most applications I found in this thread.
I'm NOT using for making calls (this model is phoneless), listening to music or browsing the web, and certainly not to look cool.
I use it 80% of the time for GPS navigation, connected by bluetooth to a GPS receiver. It works fabulous.
Of course, some basic work had to be done: 4 years ago there was no GPS navigation in Sri Lanka ( and I believe neither in India). So I started out to make a decent background map myself. Based on topomaps (country side) and satellite images (for city areas), I mapped the whole of the island, and then refined the roads with actual tracklogs. I distributed the base map to some friends, and requested them to send me their tracklogs too. After 2.5 years we now have a decent navigation system in Sri Lanka. Accuracy is generally better than 25 m (in cities 10 m). Using the map (in about 20 pieces each individually calibrated) as a background image on the PDA and running an 'external' software (Ozi Explorer), the results are stunning.
Of course, India, compared to Sri Lanka, is much too large to do the same exercise, as everything depends on accuracy. Any scanned map is totally insufficient.
Could anyone fill me in on the current situation in India? I believe there are now digital maps available for most of the country, but severely lacking for the norther part (above Delhi). That's why I am currently doing the same thing again for the norther parts of Himachal Pradesh and the whole of Ladakh, preparing myself for a visit in a couple of months time.
If anybody would have tracklogs taken from visits to the north, I would be very grateful to receive a copy. They are an enormous help in calibrating the maps. I noticed recently that on the Khardung-La stretch and beginning of Nubra valley , the coordinates on the satellite images (google & wikimapia) CANNOT be trusted. I only have a tracklog going from Leh up to Khardung-La, but no further. Most of Rupshu and Chanthang area is also missing, as well as Zanskar. Any help here is most welcome.
Thanks! And hope this posting is of interest and use to other members.
Alfonso
PS - the other 20 % of my PDA use is private (I got some religious texts on it for my personal meditation) |