[Qgis-developer] inaccuracy with NAD27 UTM zone 10 projection

[Tara Athan]

I have two layers I am trying to overlay. One is derived from the USGS 
NED, downloaded from the website with no reprojection - it's in NAD27 
UTM zone 10 (EPSG 26710). The other is a parcel layer that was 
originally in state plane NAD83 California zone 2 (ft) (EPSG: 2226). I 
used QGIS 1.4.0 to reproject the vector layer into EPSG 26710, but when 
I display them together on a map there is an offset of the parcels about 
150 m westward. I have checked the accuracy of the original data by 
reprojecting the vector layer in another GIS (Idrisi) and in that case 
there is no offset, the two layers match up well. So I have a workaround 
for my immediate needs, but I thought you might like to know about this 
issue.  Would anyone like to check to see if they can reproduce it, or 
should I go ahead and file a bug report?

Tara

-- 
Tara Athan
Owner, Athan Ecological Reconciliation Services
tara_athan at alt2is.com
707-272-2115 (cell, preferred)
707-485-1198 (office)
249 W. Gobbi St. #A
Ukiah, CA 95482