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Hi Christopher,<br>
thank you but I have still some doubt.<br>
<br>
Christopher Schmidt ha scritto:
<blockquote cite="mid20070109221337.GA3437@metacarta.com" type="cite">
<pre wrap="">The default resolutions array, if one is not specified, assumes a top
level resolution of:
res = largerMapDimension (geographic) / 512
With a default bounding box of -180,-90,180,90, for example, the default
max resolution is .703125. Beyond that, each layer is divided by 2, so
the next layer down is .35106125, etc.
</pre>
</blockquote>
Why you say that the default max resolution is .703125? This one should
be the smallest. Am I wrong?<br>
<blockquote cite="mid20070109221337.GA3437@metacarta.com" type="cite">
<pre wrap="">
</pre>
<blockquote type="cite">
<pre wrap="">If I want to specify resolutions, which criteria I must follow? I kwow
the original resolution of my base map (nearby 1 pixel = 80 meters),
</pre>
</blockquote>
<pre wrap=""><!---->
Comma seperated resolutions, where resolution is 'geographic units per
pixel'.
</pre>
</blockquote>
When you say geographic units, you say degrees or the units of the map
I'm using?<br>
<blockquote cite="mid20070109221337.GA3437@metacarta.com" type="cite">
<pre wrap="">
</pre>
<blockquote type="cite">
<pre wrap="">I
must choose multiples of the original resolution (160,320,640,...)?
</pre>
</blockquote>
<pre wrap=""><!---->
The default OpenLayers setup is to go from 80 (80m/pixel) to 40m/pixel,
20m/pixel, etc. so:
80,40,20,10,5,2.5,1.25,0.6125
</pre>
</blockquote>
There is something I do not understand. The original resolution of my
raster map is 80 meters (1 pixel = 1600 square meters). It's the max
resolution, then I thought to have this array of resolutions:<br>
1280,640,320,160,80. Am I wrong?<br>
<br>
Thank you,<br>
<br>
a<br>
<br>
<br>
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