[OpenLayers-Users] lat lng from tile

[Kenny France]

Thanks chris, 

That's was to easy , sorry I missed it 

K- 

-----Original Message----- 

From: Chris Adams [mailto:chris at genieknows.com] 

Sent: 29 August 2008 19:18 

To: Kenny France 

Cc: Users at openlayers.org 

Subject: Re: [OpenLayers-Users] lat lng from tile 

resolution = latLongSize/pixelSize 

so if your tile is 300 by 300, and you want this zoom level to exactly 

fit each tile within 2.56 degrees then, 

res = 2.56/300 

res = 0.008533333 

Kenny France wrote: 

> Hi Guys, 

> 

> I am busy with my first OpenLayers App, and have run into a question, 

> I hope someone out there has a answer for me :( 

> 

> I was looking at the docs, and i think i need to use the resoloution 

> function, but i can get it to work somehow :( 

> 

> Lets say I have a tiles, 300 x 300 px 

> 

> at Zoom level 1 this equates to 5.12 (Decimal degrees) so 300 = 5.12 

> at Zoom level 2 this equates to 2.56 (Decimal degrees) so 300px = 2.56 

> etc... 

> 

> Is it possible to do set the scale like that ? 

> 

> also at min zoom i want to only show a certain area, can i somehow add 

> top left co-ordinates, bottom right ? 

> 

> thanks for you help 

> 

> K- 

> 

> 

> 

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