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<div><span class="996093710-16112009"><font face="Arial" size="2">Hi all,</font></span></div>
<div><span class="996093710-16112009"><font face="Arial" size="2"></font></span> </div>
<div><span class="996093710-16112009"><font face="Arial" size="2">I have a problem with mapserver handling ortho images. The situation is we have 2m data cover the whole country and 20-50cm data cover most cities. We setup mapfiles as 2m data shows between
scale 200k to 500 and 20-50cm data show between scale 100k to 500. Problem is when requirst data in the city ranges, mapserver first read data from 20-50cm dataset and then read from 2m dataset which is unnecessary as the 20-50cm data is enough and the best
solution is when there is no 20-50cm data, 2m data should be used instead. </font>
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<div><span class="996093710-16112009"><font face="Arial" size="2"></font></span> </div>
<div><span class="996093710-16112009"><font face="Arial" size="2">Do you have any idea how to avoid the unnecessary reading?
</font></span></div>
<div><span class="996093710-16112009"><font face="Arial" size="2"></font></span> </div>
<div><span class="996093710-16112009"><font face="Arial" size="2">Any suggestions will be welcome!</font></span></div>
<div><span class="996093710-16112009"><font face="Arial" size="2"></font></span> </div>
<div><span class="996093710-16112009"><font face="Arial" size="2">Thanks</font></span></div>
<div><span class="996093710-16112009"><font face="Arial" size="2"></font></span> </div>
<div><span class="996093710-16112009"><font face="Arial" size="2">/Liang</font></span></div>
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