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For saving digitizing time i created one polygon feature cover all satellite imagery (study area) and styled it outline, tried many tools inside qgis 2.18 to split / cut polygon features (i don't mean split polygon start from edge polygon feature) but digitize building inside polygon by split it.

I did this task by ArcGIS for Desktop!.

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You need to use Fill Ring located under Advanced Digitizing tool

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It will create a ring inside the polygon

Before using Fill Ring:

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After using Fill Ring:

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The above yellow polygon is just a selection to show that is not overlapping polygons. Fill polygon splits the polygons not adding another polygon:

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Update:

In ArcGIS if you want to cut polygon you need to do the following:

  • Select the polygon you want to cut
  • Using Cut polygon tool

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  • Enable Snap to Sketch

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  • Cut the selected polygon

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  • thank you @ahmadhanb, but fill ring tool not cut another polygon, it's just overlapping, that is mean if want to calculate shapearea will not be real
    – GIS Man
    Oct 21, 2018 at 11:10
  • @GISMan No it does not add another polygon, it splits the polygons
    – ahmadhanb
    Oct 21, 2018 at 11:14
  • <img src="serving.photos.photobox.com/…">
    – GIS Man
    Oct 21, 2018 at 11:21
  • @GISMan Are you using ArcGIS or QGIS?
    – ahmadhanb
    Oct 21, 2018 at 11:23
  • i just showing you the difference between each other, i' am a new qgis user, migrating from commercial gis software to gis open source
    – GIS Man
    Oct 21, 2018 at 11:30

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