[mapguide-users] "Failed to read schema..." error with GDAL

[Kenneth Skovhede, GEOGRAF A/S]

Hi Hardt,

In the "About..." menu, can you select the "view last exception",
and send the message to this list?

Regards, Kenneth Skovhede, GEOGRAF A/S

On 14-12-2009 15:55, Hardt wrote:
> Hi,
>
> I created a raster datasource with GDAL.
>
> When I create a layer using this datasource, after I selected the Feature
> Resource, I get an error message saying
>
> "Failed read schema from data source.
> The operation gave the error message: Value cannot be null.
> Parameter name: input"
>
> http://n2.nabble.com/file/n4164488/Capture.png
>
> After that, I can select a schema (always default:default), and in the
> Raster field, sometimes I get "image", sometimes I get "raster" (it seems to
> depend on which editor I used when I created the datasource)
>
> I found no error in MG logs, and the DescribeSchema tool gives me this:
>
>
> <?xml version="1.0" encoding="UTF-8" ?>
> -<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> targetNamespace="http://fdo.osgeo.org/schemas/feature/default"
> xmlns:fdo="http://fdo.osgeo.org/schemas"
> xmlns:gml="http://www.opengis.net/gml"
> xmlns:default="http://fdo.osgeo.org/schemas/feature/default"
> elementFormDefault="qualified" attributeFormDefault="unqualified">
> -<xs:element name="default" type="default:defaultType" abstract="false"
> substitutionGroup="gml:_Feature">
> -<xs:key name="defaultKey">
>    <xs:selector xpath=".//default" />
>    <xs:field xpath="FeatId" />
>    </xs:key>
>    </xs:element>
> -<xs:complexType name="defaultType" abstract="false">
> -<xs:complexContent>
> -<xs:extension base="fdo:ClassType">
> -<xs:sequence>
> -<xs:element name="FeatId">
> -<xs:simpleType>
> -<xs:restriction base="xs:string">
>    <xs:maxLength value="256" />
>    </xs:restriction>
>    </xs:simpleType>
>    </xs:element>
>    <xs:element name="Raster" type="fdo:RasterPropertyType"
> fdo:defaultImageXSize="1024" fdo:defaultImageYSize="1024" />
>    </xs:sequence>
>    </xs:extension>
>    </xs:complexContent>
>    </xs:complexType>
>    </xs:schema>
>
>
> I can use the layer in a map, but as I explained in another thread today,
> there are other problems with coordinate systems etc...
>
> What means the "schema" error, and how can I fix it?
>
> Thanks,
>
> Hardt
>