[mapserver-users] Technology to combine with MapServer?

[Fia]

Hi!

I run a MapServer application that reads data from a PostgreSQL database
(with PostGIS) and plots them on a map. Now I want to make objects
clickable, so I can for example click on a flag to get a popup with short
info, together with a link. (Or the same popup by hovering over a flag with
the cursor, either works.)

What technology should I use? I have started using OpenLayers and I've
managed to put up a WFS service through MapServer, but I don't know how to
connect the two. Or should I even use some other, better technology? I've
heard people talking about GeoExt, ExtJs, Mapfish, Geoserver and more, but
I'm a a novice here and don't know what to choose. Programming PHP
workarounds is also an option. But I need some guidance in this, I have no
idea which solution is best (fast to accomplish/robust for large
databases/performance wise etc)to choose an object from a map and present
more information about it.

Best regards,
Sofia 
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[mapserver-users] Projection error, RT90 in MapServer

[Fia]

Hello,

I have a problem showing data in the former Swedish standard reference
system RT90 2,5 gon V. The point is projected ~250 meters northwest of where
it should be. I have used the projection parameters for MapServer from
Spatialreference.org.

The underlying map projection is SWEREF 99 TM (the new standard Swedish
reference system), with the following projection parameters:
PROJECTION
'proj=utm'
'zone=33'
'ellps=GRS80'
'towgs84=0,0,0,0,0,0,0'
'units=m'
'no_defs'
END

I have then tested to pinpoint an intersection, in both WGS-84 and RT90, but
the RT90 point does not end up where it should be.  I have double checked
that the RT90 coordinates are correct by transforming them to WGS-84. See my
attached screenshot.
http://n2.nabble.com/file/n4438959/rt90_mapserver_error.jpg 

For the WGS-84 point I have the following projection parameters:
PROJECTION
'proj=longlat'
'ellps=WGS84'
'datum=WGS84'
'no_defs'
'units=m'
END

And the RT90 point has:
PROJECTION
proj=tmerc
lat_0=0
lon_0=15.808278
k=1
x_0=150
y_0=0
ellps=bessel
units=m
no_defs
END

I have also tried all the other RT90 projections provided by
Spatialreference.org, just to see if any of them would work better, but
without luck.

Have I made a mistake somewhere, or are there any suggestions of why this
error occurs? I'm out of ideas. 

Regards,
Sofia
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