[Geomoose-users] GeoMoose for total neophytes

Fri Oct 12 10:03:59 PDT 2012

There are two places where you set projections on a typical GeoMoose site.

1) For GeoMoose:  This effects the display projection.  Your data services
need to be able to output in the display projection.  The initial_extent,
max_extent, and scales are all relative to this projection.  Also note, the
initial extent cannot be honored exactly because needs to fit with both the
display aspect ratio and an available scale.  The scales are a fixed set by
default because that is what tiled datasets (eg. Google, Yahoo, OSM, etc.)
require.

2) For MapServer: MapServer needs to know how to transform your data into
the output projection (for use by GeoMoose or other WMS clients).  Thus, in
the mapfiles, you need to tell it your source projection and the allowed
output projections.

Also, keep in mind that if you change projections in the mapbook from the
pseudo standard Web-Mercator projection, you can't expect the "standard"
tilesets  to work.   Of course, if you desire you can build your own
tileset(s) for whatever extent/projecting/scales you are using, but I
wouldn't recommend messing with this starting out.  For GeoMoose to request
the right tile and put it in the right place, it needs to agree with the
tileset exactly on scales, max extent, and projection.  If these don't
match, you may end up with GeoMoose requesting tiles that don't exist which
will likely result in a pink screen.

WMS layers should work so long as the WMS server supports the projection
you are using.  For MapServer, this means the wms_srs (or more generally
the  ows_srs) metadata (in WEB) needs to include that projection (and the
data projection needs to be set either globally for the mapfile or in the
individual layers in the mapfile).

On Fri, Oct 12, 2012 at 10:19 AM, Anderson, Dean <
anderson.dean at co.polk.or.us> wrote:

> When testing/starting with 2.6 I found it best to add a layer or two of my
> own to the demo.  Then add an extent for your data set in the zoomto
> section of the mapbook.xml file.  That way you can bring up the demo and
> zoom to your area to see how your stuff looks.   Many of the background
> layers are world-wide so you can also see other layers (yahoo, google,
> etc.) as well.  That way your not taking too much on right away.
>
> Good luck
>
> --
> Dean R Anderson
> IT Director
> Polk County
>
>
>
> On Thu, Oct 11, 2012 at 2:05 PM, Brian Fischer <bfischer at houstoneng.com>wrote:
>
>>  My suggestion is to project a few of your layers to web Mercator and
>> try to get those working first.  That is what the demo is setup in.****
>>
>> ** **
>>
>> Then start to work through changing your projection.  This page might
>> help as well.   http://geomoose.org/trunk/docs/projections.html ****
>>
>> ** **
>>
>> The pink screen though is probably related to a syntax problem or path
>> problem in your map file though.****
>>
>> ** **
>>
>> *Brian Fischer, CFM*
>>
>> Principal | GIS Project Manager ****
>>
>> Houston Engineering, Inc.****
>>
>> *O* 763.493.4522 | *D* 763.493.6664 | *M* 763.229.2734****
>>
>> ** **
>>
>> *From:* geomoose-users-bounces at lists.osgeo.org [mailto:
>> geomoose-users-bounces at lists.osgeo.org] *On Behalf Of *Jason Menard
>>
>> *Sent:* Thursday, October 11, 2012 2:47 PM
>> *To:* Basques, Bob (CI-StPaul)
>> *Cc:* geomoose-users at lists.osgeo.org
>> *Subject:* Re: [Geomoose-users] GeoMoose for total neophytes****
>>
>> ** **
>>
>> Hi Bob,****
>>
>> ** **
>>
>> Nope, we're doing this in NY State Plane East on NAD83-- EPSG2905.  I
>> have the projection files in the appropriate bins-- Firebug isn't throwing
>> any exceptions looking for projections.****
>>
>> ** **
>>
>> Would it be better to try to testbed things for learning purposes in
>> Minnesota rather than try to change every extent and projection for upstate
>> New York?  I have a ton of my own MN data to test with, but when you're
>> just editing the mapbook, things seem pretty straightforward to alter, yet
>> on anything but the demo, GM is quite borked.  I keep thinking I'm missing
>> something fundamentally obvious that I'm just too ignorant to know is
>> obvious...****
>>
>> ** **
>>
>> Thanks!****
>>
>> ** **
>>
>> Best,****
>>
>> Jason****
>>
>> ----
>> Jason Menard
>> menard.jason at gmail.com
>>
>> ****
>>
>> On Thu, Oct 11, 2012 at 3:29 PM, Basques, Bob (CI-StPaul) <
>> bob.basques at ci.stpaul.mn.us> wrote:****
>>
>> First of all, are you using the same projection as the demo for your own
>> data?****
>>
>>  ****
>>
>> Bobb****
>>
>>  ****
>>
>>  ****
>>
>>  ****
>>
>> *From:* geomoose-users-bounces at lists.osgeo.org [mailto:
>> geomoose-users-bounces at lists.osgeo.org] *On Behalf Of *Jason Menard
>> *Sent:* Thursday, October 11, 2012 2:20 PM
>> *To:* geomoose-users at lists.osgeo.org
>> *Subject:* [Geomoose-users] GeoMoose for total neophytes****
>>
>>  ****
>>
>> Hi all,****
>>
>>  ****
>>
>> I've got GeoMoose installed on a Windows Server 2008 testbed and the demo
>> working.  But every attempt at actually getting my own data in or changing
>> the projection results in a pink screen.  I think I've got the mapbook.xml
>> figured out (though sometimes how GeoMoose handles extent units confuses
>> me) and I'm starting to get a grasp of how things are working, but I just
>> can't get it to work!  I think if I get some success on any one issue, the
>> rest of the problems will solve themselves, but I'm having trouble getting
>> to that first success.  I know my way around GIS, but this is my first
>> attempt at web-delivered data.****
>>
>>  ****
>>
>> Help!****
>>
>>  ****
>>
>> Best,****
>>
>> Jason
>> ----
>> Jason Menard
>> menard.jason at gmail.com****
>>
>> ** **
>>
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