[mapguide-users] Does mapguide support rasters stored in Postgis

[Diego Ordonez]

Thanks again Jackie, much appreciated your support.

I’ve realized that regardless of what you write on the FILE path… the TEST result is always TRUE

I wrote Gibberish (literally) and still TRUE

[cid:image001.png at 01D78EAF.AC60E050]

From: mapguide-users mapguide-users-bounces at lists.osgeo.org<mailto:mapguide-users-bounces at lists.osgeo.org> On Behalf Of Jackie Ng
Sent: August 11, 2021 5:05 AM
To: mapguide-users at lists.osgeo.org
Subject: Re: [mapguide-users] Does mapguide support rasters stored in Postgis

[NOTE: Same reply but with proper email subject this time so it should display properly in mailing list archives]

Postgis raster is a supported driver of the GDAL provider. It's not its own separate FDO provider.

So not seeing Postgis raster on that list *is to be expected*. You should be selecting the GDAL provider.

Now here is where you are venturing into uncharted territory. This is because I have assumed for the longest time that users would only be using the GDAL provider to connect to file-based raster data sources and not raster data in external web services or relational databases (such is the case for PostGIS raster) and thus the GDAL provider UI in Maestro is designed with this assumption in mind.

Nevertheless, the file path parameter in that UI maps to the parameter that the GDAL provider uses to open the data source, so you should theoretically be able to use whatever parameter needed to connect to the raster data in that same file path field.

In the case of PostGIS raster, you would use the a connection string whose structure is described here:

https://gdal.org/drivers/raster/postgisraster.html#connecting-to-a-database

Basically, put this connection string into that file path field and try to test the connection. If it's all good, save it and you should be able to then be able to make layers from it.

- Jackie

You wrote:


Hi Jackie.

I applied the new GDAL as you suggested.

[cid:image001.png at 01D78DE3.38E17030]

I still don’t see anything called Postgis Raster in MapGuide Maestro… which one

should I use instead ?

Thanks for your help


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