On Thursday 18 October 2001 10:14, Uttam Rao wrote: > Hi Thierry, > > Do you think it as a correct way to use SVG for displaying route maps. > If we use jpeg then we send only a small portion of map for a specific zoom > level. When the user moves right of left then the server sends a new map > for the corrosponding position. > But in SVG we are forced to send the whole map irrespective of which > location user is watching. > And its a major band-width problem for us. > > Also zooming feature is not so useful for us because it only magnifies the > same image. But in our case when we zoom we are supposed to show extra > information about that area. > > The biggest problem is when the user explore deeper and deeper in the map. > If a user is viewing a route from one end of the germany to another end we > are forced to send the whole map which covers his route. > > So I am doubtful whether SVG is a right choice for us or not ?
sure SVG is the right choice. As your major problem is the band-width (sending the whole map) and probably the performance of svg rendering - what about sending some small pieces of svg that represent a part of a map. You can then go back to the server and send another part of the map according to a pan or zoom event. Implementing a logical zoom is doable in SVG. I agree that this solution is more complex to develop compared to sending the whole map to the client - but it sounds more reasonable to me and should provide better performance. Thierry. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
