[mapguide-users] Spatial Data Formats Best Practice

[GISDOTNET]

Kenneth,

Thanks for the response. I am using FDO which is how I got the OGR and
PostGIS providers configured. It's great that I don't have to convert;
however, I started this thread to determine which format, if any, was
preferred or best practice for use with MGOS from a performance,
functionality, usability, etc. standpoint.

What do you mean by "single polygon" when you wrote "I know the OGR provider
reports having point+line+polygon if the table contains a single polygon."
The table is nothing but polygons, or lines, or points. Shouldn't the OGR or
PostGIS provider be able to distinguish the geometry from the designated
geometry column? I'll look into MapGuide Maestro and see if that helps.

I appreciate the education.

Aaron


Kenneth Skovhede, GEOGRAF A/S wrote:
> 
> You don't have to convert, MapGuide uses FDO:
> http://fdo.osgeo.org/OSProviderOverviews.html
> 
> So, you can use ArcSDE and SHP files as they are.
> If you _want_ to convert to SDF, you can try FDO2FDO:
> http://www.sl-king.com/Fdo2Fdo/download/download.html
> 
> I belive ArcSDE is capable of saving as SHP files.
> You can load SHP files through MapGuide Studio, or access them directly.
> 
> I know the OGR provider reports having point+line+polygon if the table
> contains a single polygon. I assume it is the same for PostGIS.
> 
> This makes MapGuide Studio set up styles for all three types.
> Trying to remove the style, leaves an ugly red cross in the legend.
> 
> You can use MapGuide Maestro to select what items should be avalible.
> Once done, you can re-open the layer in MapGuide Studio as normal:
> http://trac.osgeo.org/mapguide/wiki/maestro
> 
> Regards, Kenneth Skovhede, GEOGRAF A/S
> 
> 
> 
> GISDOTNET skrev:
>> Jason,
>>
>> I think I answered part of my own question...Service=<Database Name> and
>> DataStore=<schema name>. I am now able to connect to the PostGIS database
>> and see my featureclasses; however, I notice that when I create a layer,
>> MapGuideStudio doesn't seem to recognize the geometry and I am bale to
>> set
>> symbology for line, point, and polygon regardless of the actual geometry
>> of
>> the feature selected. I had the same issue when I connected to the data
>> as a
>> personal geodatabase using the FDO OGR provider. Any ideas?
>>
>> Any other advice on converting from ESRI formats to SDF would be greatly
>> appreciated.
>>
>> Aaron
>>
>>
>> JasonBirch wrote:
>>   
>>> For data management, an RDBMS is of course preferred.  
>>>
>>> Other options to ArcSDE/PostGIS would be something like SQL Server 2008
>>> (cheaper than ArcSDE if you don't need the bells and whistles) or
>>> something like the Oracle Express Edition (free, but with a rather
>>> painful curve as you scale up).  I'd encourage you not to give up on
>>> getting PostGIS to work.  Often you'll see that something like the wrong
>>> version of the ssleay library is located elsewhere in the filesystem,
>>> but I've always been able to get it working by putting the required dlls
>>> in the FDO installation directory.
>>>
>>> My preference in this regard though is to optimize for performance, and
>>> if you do not need up-to-the-minute currency or web-based editing you
>>> can see considerable performance gains by going to SDF or (if you're
>>> feeling adventurous) SQLite as the data storage format.
>>>
>>> Jason
>>>
>>> -----Original Message-----
>>> From: GISDOTNET
>>> Subject: [mapguide-users] Spatial Data Formats Best Practice
>>>
>>>
>>> I have worked with ESRI web technology for the past 9 years and am
>>> getting up
>>> to speed with MapGuide Open Source 2.0.1 and the FDO providers. While
>>> there
>>> are numerous FDO providers, I would like to know what the preferred or
>>> best
>>> practice data format is for MapGuide OS 2.0.1? My overall preference is
>>> to
>>> go with a RDBMS spatial solution like ArcSDE or PostGIS; however, I am
>>> completely flexible. I have gone through dll hell trying to get the
>>> PostGIS
>>> FDO provider configured without success and ArcSDE comes at a steep
>>> price.
>>>
>>> _______________________________________________
>>> mapguide-users mailing list
>>> mapguide-users at lists.osgeo.org
>>> http://lists.osgeo.org/mailman/listinfo/mapguide-users
>>>
>>>
>>>     
>>
>>   
> 
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> 
> 

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