Merging data sources And blocking out sections

[Fawcett, David]

Jason, 

If you are trying to have only the low res data show up when you are
zoomed out and then have the high res data show up as you zoom in, take
a look at LAYER MINSCALE and MAXSCALE in the Mapfile Reference Document.


You can set the minimum and maximum scales at which you want a layer to
display.

David.

-----Original Message-----
From: UMN MapServer Users List [mailto:MAPSERVER-USERS at LISTS.UMN.EDU] On
Behalf Of Jason R. Moore
Sent: Saturday, November 04, 2006 5:34 PM
To: MAPSERVER-USERS at LISTS.UMN.EDU
Subject: [UMN_MAPSERVER-USERS] Merging data sources And blocking out
sections


I would like to know the best way to merge data from different sources. 
For example I have a large over view 1:20000 map and several smaller 
areas of higher resolution what is the best way of overlying the two and

not letting the lower resolution data show threw?
When you just stack the layers on top of each other you can see the 
lines on the lower resolution map meandering back en forth under the 
higher resolution data.

So is there a command to clear the extent of a layer or what is the best

way to do this?

Jason