MapInfo Pro Developers User Group

Hello,
I'm trying to combine several polygons into one. Some are adjacent and some other are not. Tried to select them and it does not work, so I cannot use the combine command or simply save as my selection.
Any idea how can I solve this? Thanks a lot. I'm using Mapinfo 2021
Thanks!
Joachim

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joachim Denaeyer
ORANGE BELGIUM
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Hi Joachim

There are multiple ways you can select several objects in MapInfo Pro. You can use the normal Select tool and select the first, and then hold the Shift key down while selecting additional records. You can also use Radius Selection, Marquee Selection, or Polygon Selection to select multiple objects within a drawn area.

To be able to combine the selected objects, the layer these objects belong to needs to be made Editable in the Layer List.

If you want to add objects from one layer to an object in another layer, you can select the object you want to add to, set this as your target (using Ctrl+T), and then select the object(s) you want to add, and then use Combine Selected Objects to add the selected objects to the target object.

A few things to note:

• Your layer needs to be selectable in the Layer List
• You can only select from one layer at a time.
• You can only select from vector layers, not from raster layers

Sorry if I have been stating the obvious

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Peter Horsbøll Møller
Principal Presales Consultant | Distinguished Engineer
Precisely | Trust in Data
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Thanks a lot for this prompt answer. That is clear for me. My mistake was that I was trying to combine different polygons not coming from the same layer...Have a nice day.

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joachim Denaeyer
ORANGE BELGIUM
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Original Message:
Sent: 10-24-2022 02:15
From: Peter Møller
Subject: Combine different polygons to create a single one

Hi Joachim

There are multiple ways you can select several objects in MapInfo Pro. You can use the normal Select tool and select the first, and then hold the Shift key down while selecting additional records. You can also use Radius Selection, Marquee Selection, or Polygon Selection to select multiple objects within a drawn area.

To be able to combine the selected objects, the layer these objects belong to needs to be made Editable in the Layer List.

If you want to add objects from one layer to an object in another layer, you can select the object you want to add to, set this as your target (using Ctrl+T), and then select the object(s) you want to add, and then use Combine Selected Objects to add the selected objects to the target object.

A few things to note:

• Your layer needs to be selectable in the Layer List
• You can only select from one layer at a time.
• You can only select from vector layers, not from raster layers

Sorry if I have been stating the obvious

------------------------------
Peter Horsbøll Møller
Principal Presales Consultant | Distinguished Engineer
Precisely | Trust in Data
------------------------------

All of your polygons need to be on the same layer as well, or you can't select them all at the same time.  Which is part of what Peter said above.

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Jim
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