[mapserver-users] Label text always clipped by tiles

[Gregor at HostGIS]

On 1/26/2011 9:05 AM, Mike Stoddart wrote:
> I admit I haven't checked but does Google et al suffer the same problem?

If you mean overlaying your data atop Google, say a small dataset 
expressable as KML, that should work A-OK. If it's pure vector data 
being rendered client-side, tiling wouldn't be an issue at all. But of 
course, that's where we leave MapServer Land and get into Google Earth, 
Google Maps, etc.

If you mean "how did Google do it?" on their basemap I don't know 
entirely. They seem to have avoided (or later corrected) a lot of 
tile-edge artifacts. Their mechanisms probably included a) a mapping 
engine that positions labels to geographic points; b) large-scale 
meta-tiling with terabytes of RAM; and c) a large staff of personnel for 
QC and a few years of correcting reported issues.

-- 
HostGIS, Open Source solutions for the global GIS community
Greg Allensworth - SysAdmin, Programmer, GIS Person, Security
    Network+   Server+   A+   Security+   Linux+
    PHP   PostgreSQL   MySQL   DHTML/JavaScript/AJAX

"No one cares if you can back up — only if you can recover."