http://www.roktech.net/devblog/index.cfm Discussions of the ESRI Geographic Information Systems development platform en-us Wed, 08 Sep 2010 15:56:47 -0400 Wed, 23 Jun 2010 10:45:00 -0400 BlogCFC http://blogs.law.harvard.edu/tech/rss jharris@roktech.net jharris@roktech.net jharris@roktech.net http://www.roktech.net/devblog/index.cfm no http://www.roktech.net/devblog/index.cfm/2010/6/23/ArcGIS-Server-Map-Cache-Annotation-and-Antialiasing Here is another quick tip that we hope will save other folks some time. When caching a 'basemap' layer for county/city/municipal, we'll often include Streets, Annotation, and Property Parcels. Of course, these folks almost always have a really nice imagery, and anything that uses antialiasing looks terrible. Just in case you dont know what antialiasing is, where is a definition from ESRI: " Anti-aliasing is a graphics technique that blends foreground and background pixels near edges of objects to trick your eye into seeing smoother borders. You can use this option if unwanted artifacts appear in your map displays -- for example, jagged lines, wavy lines or bands, and moiré patterns. " Well, its easy enough to turn off antialiasing in your map cache (check your MSD properties from the toolbar in ArcMap and Create Map Cache screen). However, we have run into several instances where these settings were not being honored - most of the time it was with annotation layers. No matter what we tried, the annotation layers were being antialiased. Crazy right? Well anyway, turns out, in our case, it was an easy fix. Simply change the cache image type from png8 to png24. After that, no antialiasing in the anno. The image tiles are slightly larger (file size), but not too bad. Map Cache ArcGIS Server Wed, 23 Jun 2010 10:45:00 -0400 http://www.roktech.net/devblog/index.cfm/2010/6/23/ArcGIS-Server-Map-Cache-Annotation-and-Antialiasing