[postgis-users] Downloading PostGIS for Windows installer - circular links that lead nowhere?

[dnrg]

Thanks Steven.

I should have finished my coffee and scrolled further
down on Mark's page. I found what I needed here:

PostGIS 1.1.2 release for PostgreSQL 8.1 (inc. GEOS
2.2.1/PROJ 4.4.9 ~1.2Mb)

http://www.webbased.co.uk/mca/pg81/postgis-pg81-setup-1.1.2-1.exe

Saw an older 8.0 PostgreSQL version and didn't scroll
any further. Mea culpa.

What are people here using as an ArcMap substitute and
why?

Obviously there is uDig, which I'm going to download.
But for advanced analysis, it seems like QGIS as a
front-end to GRASS is an option. For now, I'm looking
for an all-windows solution - not sure I want to mess
with Cygwin, which GRASS seems to require.

So, what's the best open source ArcMap substitute on
the Windows platform with strong analysis
capabilities. 

In particular, I am looking for something that does
raster analysis well (roughly equivalent to ESRI's
Spatial Analyst [SA]) - one application is that I need
to generate what is known in SA as Zonal Statistics.

I have a parcel shapefile and and raster. I need to
summarize the raster cell values beneath each vector
parcel zone.

This is easy to do in Spatial Analyst, and it provides
a number of statistics that you can then attach as
attributes to the shapefile, e.g. MAX, MEAN, MODE, and
my favorite, MAJORITY (which cell value appears most
frequently inside any given parcel).

Actually, I'm wondering if there's a difference
between MODE and MAJORITY. From my spatial statistics
course, I recall that MODE is the most popular /
(literally, most fashionable in French) value. Or
maybe ESRI uses MAJORITY as a synonym for MODE. Been
awhile since I've used Spatial Analyst.

Sorry for the digressions, but it's Saturday and thus
it may be "slow list day." :-)

Dana



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