Re: [mapguide-users] Is GDAL working and Stable in 2.2?

2011-08-19 Thread Gabriele Monfardini 
Hi Trevor, hi all,

one thing that would be beneficial and easy to do is using a more recent gdal.
Current stable version is 1.8 and MapGuide by default uses 1.6.

Not enough, it uses 1.6.0 while the last stable version in 1.6 branch is 1.6.3.
Usually point releases are mostly bug fixes so using 1.6.0 is not a good idea.

Another issue is that in 1.6 branch one has to manually pass
"--with-thread" to gdal compilation (at least in Linux one) to have
thread safe support, that is not enabled by default (while it is
enabled by default in 1.7 and in 1.8 branches if I remember
correctly).

I have to recompile gdal to enable postgis support in OGR provider
(I'm on Linux) and, as expected, version 1.6.3 works well with
MapGuide.
Moreover, also latest stable in 1.7 branch works fine, while I've had
some problem with 1.8.

In my tests I use OGR Provider with PostgreSQL/Postgis and gdal
provider with tiff and ecw images (I've kept the single connection in
gdal provider since I aim for stability, but not in OGR Provider that
would be too penalizing).

Regards,

Gabriele Monfardini
___
mapguide-users mailing list
mapguide-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapguide-users

RE: [mapguide-users] Is GDAL working and Stable in 2.2?

2011-08-18 Thread Trevor Wekel 
Hi Mike,

I have successfully performed lightweight load testing on the 64 bit Windows 
build with some ECW, MrSID, and TIFF data using the information contained at 
http://trac.osgeo.org/mapguide/wiki/MGOS22GdalProvider.  So yes, for my data 
set I would say that it is stable.

There are a few limitations which may impact your implementation:

Occasionally MapGuide does not correctly return the extents or coordinate 
system of the raster data.  This makes authoring more difficult.  Jackie has a 
patch to improve this behaviour attached to 
http://trac.osgeo.org/mapguide/ticket/740.

The FDO GDAL Provider has only been tested with a single connection.
[FeatureServiceProperties]
DataConnectionPoolSizeCustom = OSGeo.Gdal:1

Enabling multiple connections may cause raster to go unstable.  This means that 
MapGuide and FDO GDAL will only process one raster data set concurrently.  If 
you have a lot of users and a lot different raster data sets, this could be a 
significant bottleneck.

I would like to take another pass at MapGuide & FDO GDAL for the 2.4 release.  
There is some interest in adding configurable resampling (bilinear, cubic, etc) 
and we really do need to remove the single connection limitation.  I can make 
time available to do this work if funding is available.  This would move 
MapGuide + FDO GDAL Provider closer to parity with MapGuide + Autodesk Raster 
Provider.

Regards,
Trevor


-Original Message-
From: mapguide-users-boun...@lists.osgeo.org 
[mailto:mapguide-users-boun...@lists.osgeo.org] On Behalf Of Mike Micallef
Sent: August 18, 2011 2:20 PM
To: mapguide-users@lists.osgeo.org
Subject: [mapguide-users] Is GDAL working and Stable in 2.2?

Not complaining - just discouraged...

Is GDAL working and stable in 2.2 - all kinds of different and older posts
out there about partial work-arounds, Trevor’s investigation, locking it up,
this is the problem, that’s the problem...

We use imagery and it has been a struggle migrating through the releases and
trying out the fixes - I do not want to move until I am sure how to handle
the imagery.

We have custom code all over the place and to migrate is a bit of an
undertaking
m

--
View this message in context: 
http://osgeo-org.1803224.n2.nabble.com/Is-GDAL-working-and-Stable-in-2-2-tp6700721p6700721.html
Sent from the MapGuide Users mailing list archive at Nabble.com.
___
mapguide-users mailing list
mapguide-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapguide-users

___
mapguide-users mailing list
mapguide-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapguide-users

[mapguide-users] Is GDAL working and Stable in 2.2?

2011-08-18 Thread Mike Micallef 
Not complaining - just discouraged...

Is GDAL working and stable in 2.2 - all kinds of different and older posts
out there about partial work-arounds, Trevor’s investigation, locking it up,
this is the problem, that’s the problem...

We use imagery and it has been a struggle migrating through the releases and
trying out the fixes - I do not want to move until I am sure how to handle
the imagery.

We have custom code all over the place and to migrate is a bit of an
undertaking
m

--
View this message in context: 
http://osgeo-org.1803224.n2.nabble.com/Is-GDAL-working-and-Stable-in-2-2-tp6700721p6700721.html
Sent from the MapGuide Users mailing list archive at Nabble.com.
___
mapguide-users mailing list
mapguide-users@lists.osgeo.org
http://lists.osgeo.org/mailman/listinfo/mapguide-users