Or use Mapcruncher, http://research.microsoft.com/en-us/um/redmond/projects/mapcruncher/ It doesn't require a square image and is very intuitive.
On Jul 22, 9:53 am, Kesuke <[email protected]> wrote: > Hi browndash, your problems relate to your use/understanding of zoom > levels. > > Google.maps displays the world as a cascade of square tiles. Each zoom > level is made up of these square tiles, increasing by a power of 2 > each time. So; > > Zoom level 0 = 1 tile (1 by 1) (the entire world is made up from one > tile, measuirng 256 by 256 pixels). > Zoom level 1 = 4 tiles (2 by 2) > Zoom level 2 = 16 tiles (4 by 4) (the entire world is made up from 16 > tiles, EACH measuring 256 x 256 pixels). > > Each tile is square, so your starting image is 1280 x 768 pixels, but > will need to be squared off to work properly. In photoshop, just > select the background colour and resize your canvas (not image). > > I would then resize the image to a multiple of 256 (as this is the > default tile size in pixels) and a corresponding zoom level. So for > example, if you want your maximum zoom level to be 2 – you need to > resize your image to create 16 tiles (4 by 4). Well, 4 x 256 = 1024. > So resize your image to 1024 x 1024 pixels. Set your max zoom level to > 2 and min zoom level to 0. This should generate 21 tiles. (1 for > zoomlevel 0, 4 for zoomlevel 1 and 16 for zoomlevel 2). > > Let us know how that works. Obviously if you want it to work beyond > zoom level 2 you will need to make a sufficiently big image, e.g. zoom > level 3 (256 tiles, 16 by 16 would require a master image 4,096 pixels > wide) > > On Jul 22, 2:30 pm, browndash <[email protected]> wrote: > > > > > Hi, > > > I am trying to create a custom overlay for the world map, but I cannot > > figure out how to use the photoshop tile cutter correctly together > > with the Alignment tool. I have tried a dozen times to run the tile > > cutter but I just cant seem to be getting the right tiles. I have > > recorded a short video (no audio) to show you my exact process. > > >http://screencast.com/t/YTM3MDM0ZG > > > You can view the output here :http://rocana-nigeria.com/gmapv3/ > > > image:http://rocana-nigeria.com/gmapv3/map-ready.jpg > > > Any help or tips will be greatly appreciated.- Hide quoted text - > > - Show quoted text - -- 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.
