<br>use two different tile indexes and use MIN- and MAXSCALEDENOM to control when they are each used.<br><br>presumably you already have one tileindex working for the nationwide 500,000 scale images?<br><br>so make a second one that is a compound index - looks like the above, but also includes the footprints of the 250,000 areas (replacing the 500,000 references in those areas). Switch between the two something like this:<br>
<br>LAYER<br> NAME "Overview Imagery"<br> STATUS OFF<br> TYPE RASTER<br> TILEINDEX "img_index_500k"<br> TILEITEM "PATH"<br> MINSCALEDENOM 300001<br>END<br><br>LAYER<br> NAME "Detailed Imagery"<br>
STATUS OFF<br> TYPE RASTER<br> TILEINDEX "img_index_250k"<br> TILEITEM "PATH"<br> MAXSCALEDENOM 300000<br>END<br><br><br><br><br><br><br><br><br><div class="gmail_quote">On Tue, Feb 2, 2010 at 1:34 PM, Wendell Turner <span dir="ltr"><<a href="mailto:wendell@enflight.com">wendell@enflight.com</a>></span> wrote:<br>
<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">The base layer of my map has full coverage of the US at a<br>
scale of 1:500,000. That works fine. I have some areas of<br>
detail that have tif files at a scale of 1:250,000. What do<br>
I put in the mapfile to say 'use high res if available for<br>
this tile, otherwise use the low res one'?<br>
<br>
Thanks,<br>
<br>
Wendell<br>
<br>
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