Ok, I get it thanks. So .. no freebees here. I was hoping that google would do the cutting for me :) Given the image corner coordinates and corresponding pixel x,y values, the solution is unique. I could do it easily in C++, but I need to use php since part of my product will be to have user-supplied and calibrated charts. Zoomify is using a similar approach for image rendering. http://www.boatjuggler.com/Zoom/test.htm
Ahmet On Wed, Mar 17, 2010 at 8:57 PM, Chad Killingsworth < [email protected]> wrote: > Tile layers can be a lot of work to get setup. Here's a good > description of the process that should answer a lot of your questions: > http://mapki.com/wiki/Automatic_Tile_Cutter > > As far as creating the tiles are concerned, it's the same process for > a V2 or a V3 map. > > Chad Killingsworth > > On Mar 17, 1:24 pm, "Ahmet" <[email protected]> wrote: > > Thank you. > > I think that I am missing some crucial information here. > > > > Do I, using the Lat/Lon limits of my overlay map, create my own images > for > > EACH zoom type ? > > Based on the Google world coordinate system ? > > Let's assume that I have an image that is 1000 by 1000 pixels and is > between > > (44 , 45) lat and (70 , 71) lon > > I don't want to show it between . zoom level 6 and 17 > > So now I have to create 11 sets of 15 tiles ? > > > > In the missouristate example, one of the tiles is: > http://search.missouristate.edu/map/tilesets/baselayer/15_7893_12731.png > > I understand the zoom level, but not sure about the 7829 and 12731. > > > > I presume I leave the areas I have no maps blank ? > > the website returns "blanktile.png" if it is not matched. How does that > work > > ? > > > > Thanks you > > Ahmet > > > > ----- Original Message ----- > > From: "Chad Killingsworth" <[email protected]> > > To: "Google Maps JavaScript API v3" < > [email protected]> > > Sent: Wednesday, March 17, 2010 12:36 PM > > Subject: [Google Maps API v3] Re: Chart Overlay Tiles .. Best approach > > > > http://search.missouristate.edu/map/mobile/examples/tileoverlay.htm > > > > Chad Killingsworth > > > > On Mar 17, 11:24 am, "Ahmet" <[email protected]> wrote: > > > I think I answered my own question: > > > "There is a ImageMapType class that seems to be designed for this > > > purpose." > > > > > Now.. I could not find any (short) examples of the ImageMapType class. > > > Anybody knows where ? > > > Thanks > > > Ahmet > > > > > ----- Original Message ----- > > > From: "Ahmet" <[email protected]> > > > To: <[email protected]> > > > Sent: Tuesday, March 16, 2010 5:15 PM > > > Subject: Chart Overlay Tiles .. Best approach > > > > > > Ok, let's assume that I would like to overlay my own chart. > > > > My original charts are about 10000 pixels by 10000 pixels += 50% > > > > In order to stop the browsers to go bananas, I split them up into > tiles, > > > > of say, 600 by 600. > > > > This is done in advance, not on-demand. > > > > > > Each chart has their corresponding lat/lon bounds > > > > then as the user pans or zooms, I figure out which charts are > > > > (partially) > > > > visible, and create overlays with them. > > > > The charts that are completely out of bounds I destroy and remove > from > > > > my > > > > list, (leaving some margin) > > > > > > Does this make sense ? > > > > Is there an example of this method ? > > > > > > Is there any other method that should be used, perhaps by > > > > utilizing/matching the Google tile sizes ? > > > > > > Thanks > > > > Ahmet > > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google Maps JavaScript API v3" group. > > To post to this group, send email to > [email protected]. > > To unsubscribe from this group, send email to > > [email protected]<google-maps-js-api-v3%[email protected]> > . > > For more options, visit this group athttp:// > groups.google.com/group/google-maps-js-api-v3?hl=en. > > -- > You received this message because you are subscribed to the Google Groups > "Google Maps JavaScript API v3" group. > To post to this group, send email to > [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-maps-js-api-v3%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-maps-js-api-v3?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
