Strange TileCache Artifacts

Couple screenshots of the problem I'm having, and an actual tile that is returned from a TileCache WMS request.

Zoom Level 2

Zoom Level 3 (Note how line has moved North)

Actual tile (Black line is where no data is returned by WMS)

Dell D620 Ubuntu 8.04 Install

Log of 15 Nov 2008 install

• Selected "Manual" Install option and pointed it to my existing Ext3 partition.


• Updated package list available via apt-get:

$ sudo apt-get update

• Installed vim (otherwise you get goofy-ass behavior in vi)

$ sudo apt-get install vim

• Disable annoying console beep:

$ sudo vi /etc/modprobe.d/blacklist
--> add
# stop PC speaker
blacklist pcspkr
--> cut its throat
$ sudo rmmod pcspkr


• Get the Nvidia drivers installed:

$ sudo apt-get install envyng-gtk
--> Applications, System Tools, EnvyNG:
--> Select NVIDIA and "Install the NVIDIA driver (Automatic...)
--> Reboot


• Did one full update and then turne off the Automated Update tool. Damn thing is annoying.



• Test the video driver install using Google Earth. It's the biggest video resource pig I can thik of to test with. Seems to work.



• Most things seem to be working. Time to get some GIS apps installed from sour
  ce.

FWTools is The Bomb, but no Mapserver release has it all

I've been using the Mapserver binary included in FWTools for awhile now, and been very happy with it. It comes out-of-the-box with the lovely AGG driver included, as well as Python mapscript. When combined with the extensive odd-format support that Frank includes in the gdal and ogr tools, and the fact that it's all self-contained, it really makes it hard to beat. Of course inevitably you're going to find that something has to be left out, and I just found 2 of them - PDF output format, and null grid shifting support. The first isn't critical, but the second is a potential deal breaker, as I believe it is causing reprojection artifacts to be created in my Google Map tiles. So, it's probably time to figure out, and document, a reliable way to build MapServer from source, since "Oh by the way", the apt-get version of Mapserver lacks AGG support. Go figure.