[mapguide-users] MGOS 4 Final Release and Data Selection

[Scott Hameister]

Definitely spatial index, and coordinate system can effect this. Using
views instead of tables can do this.
I found an odd ball outlier that if you make fields displayable in maestro
and any have a null value for the checked fields it will fail. I documented
this in git. I just unchecked all fields and selections worked again (I
don't use the built in viewer)

On Thu, Jul 9, 2026, 9:44 AM Gordon Luckett via mapguide-users <
mapguide-users at lists.osgeo.org> wrote:

> The other issue is that the underlying spatial table or view does not have
> a primary key.
>
> On Thu, Jul 9, 2026 at 10:29 AM David Bowen via mapguide-users <
> mapguide-users at lists.osgeo.org> wrote:
>
>> We're experiencing an issue where random items on the map won't select,
>> even though the layer is set to be selectable. I've been unable to identify
>> a common setting between the various layers that are experiencing this
>> issue.
>>
>> In the below image, the outermost lines are selectable (labelled as “S”),
>> however the inner ones are not selectable (labelled as “NS”), unless you
>> also select one of the outer lines. We're getting similar behaviour in
>> other layers that correspond to different tables.
>>
>> Has anyone else encountered this issue? We're using MGOS 4 Final Release.
>> We don’t encounter this issue in an environment that’s set up with MGOS 4
>> Beta 2, reading from the same database. Additionally, I'm not noticing any
>> entries in the error logs that would point to the issue.
>>
>> Thanks,
>>
>> David
>>
>> [image: image.png]
>>
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