[Geomoose-users] Projection Issues, Extent Issues, Limit Buffer Size, Security

[Mark Volz]

This message covers a couple questions I have within Geomoose including

#Projection Issues

#Extent Issues

#Limit Buffer Size

#Security

 

#Projection Issues:

 

What I would like to do is:

 

a) Include data in either UTM or Lyon County Coordinates - including the
ability to utilize the LMIC WMS Server which is in UTM. 

b) Have the XY location on the bottom of the map to display Lyon County
Coordinates, the latitude and longitude must be accurate for the pictometry
tool. 

 

Currently my data is in UTM so that it matches the LMIC imagery.  The XY
location of also is in UTM.  The highway department expressed interest in
having the XY location display in County Coordinates.  To fix this, I changed
the Coordinate system in the .js file from UTM to MN-COUNTY LYON.  The XY
location did display our county coordinates and the measurements were
correct; however, the latitude and longitude are no longer valid.

 

I would like to keep using the LMIC UTM image server, however, we do need the
XY location in county coordinates and the latitude and longitude to be
correct.  The GIS data could be in county coordinates or UTM.  For my own
curiosity I would like to know how to get the county coordinates to work, I
also think it might save time dealing with updates - and yes I understand
that there will be a performance hit if mapserver reprojects on the fly,
however I can always switch back if I think its too slow.  Perhaps someone
could send me a .map file using county coordinates as an example.

 

#Extent Issue

 

Next, I am having some issues with the extent.  What I would like to do is
display only a portion of the data by using a top bottom left right box area
instead of a query.  However when I assign to small of an area the entire
layer does not draw.  Can I use the extent to limit the displayed area, or is
this not possible?

 

#Select by Buffer

On the select by buffer tool I noticed that If I typed in a ridicules number
such as "buffer parcels within 900 miles" The server obviously could not
handle the request and crashed.  Is there a way to limit the buffer size?

 

#Security question

Last,  

We need the ability for some users to log in to get access to more secure
data.  For example a we need a public and internal site or perhaps one where
users log in i.e. The Sheriff might want a "crime map" whereas only the
sheriff and deputies have access to that information.  Does anyone have any
ideas on how this could be done though geomoose?

 

 

Mark Volz

GIS Specialist

Lyon County, MN

(507) 532-8218

 

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