Creating polygon from hole in QGIS?












3















I work with this polygon and try to find a way to create a new polygon from the empty gap in the middle of the polygon.



I succeed to do it with a "difference" tool- but used with another layer on the polygon and then using the difference tool.



I can also digitize the shape of the hole and create a new layer- i seeking an automated way to do it and not doing in manually.



I read




  • "Clip" hole into Shapefile

  • Create Polygon from holes in polygon ArcGIS

  • How to fill in a ring polygon in QGIS 2.2?


Is it possible to do it with a direct tool in QGIS 2.18.1, without aid of another layer?



enter image description here






polygon qgis-2.18 create holes







share|improve this question

























  • Manually for this one hole? Or for a whole layer with holes?

    – Erik
    18 hours ago











  • for the whole layer

    – newGIS
    18 hours ago











  • Possible duplicate of How to fill in a ring polygon in QGIS 2.2?

    – Taras
    18 hours ago
















3















I work with this polygon and try to find a way to create a new polygon from the empty gap in the middle of the polygon.



I succeed to do it with a "difference" tool- but used with another layer on the polygon and then using the difference tool.



I can also digitize the shape of the hole and create a new layer- i seeking an automated way to do it and not doing in manually.



I read




  • "Clip" hole into Shapefile

  • Create Polygon from holes in polygon ArcGIS

  • How to fill in a ring polygon in QGIS 2.2?


Is it possible to do it with a direct tool in QGIS 2.18.1, without aid of another layer?



enter image description here






polygon qgis-2.18 create holes







share|improve this question

























  • Manually for this one hole? Or for a whole layer with holes?

    – Erik
    18 hours ago











  • for the whole layer

    – newGIS
    18 hours ago











  • Possible duplicate of How to fill in a ring polygon in QGIS 2.2?

    – Taras
    18 hours ago














3












3








3








I work with this polygon and try to find a way to create a new polygon from the empty gap in the middle of the polygon.



I succeed to do it with a "difference" tool- but used with another layer on the polygon and then using the difference tool.



I can also digitize the shape of the hole and create a new layer- i seeking an automated way to do it and not doing in manually.



I read




  • "Clip" hole into Shapefile

  • Create Polygon from holes in polygon ArcGIS

  • How to fill in a ring polygon in QGIS 2.2?


Is it possible to do it with a direct tool in QGIS 2.18.1, without aid of another layer?



enter image description here






polygon qgis-2.18 create holes







share|improve this question
















I work with this polygon and try to find a way to create a new polygon from the empty gap in the middle of the polygon.



I succeed to do it with a "difference" tool- but used with another layer on the polygon and then using the difference tool.



I can also digitize the shape of the hole and create a new layer- i seeking an automated way to do it and not doing in manually.



I read




  • "Clip" hole into Shapefile

  • Create Polygon from holes in polygon ArcGIS

  • How to fill in a ring polygon in QGIS 2.2?


Is it possible to do it with a direct tool in QGIS 2.18.1, without aid of another layer?



enter image description here






polygon qgis-2.18 create holes




polygon qgis-2.18 create holes






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited 7 hours ago









PolyGeo♦

53.3k1779238




53.3k1779238










asked 19 hours ago









newGISnewGIS

1,83821246




1,83821246













  • Manually for this one hole? Or for a whole layer with holes?

    – Erik
    18 hours ago











  • for the whole layer

    – newGIS
    18 hours ago











  • Possible duplicate of How to fill in a ring polygon in QGIS 2.2?

    – Taras
    18 hours ago



















  • Manually for this one hole? Or for a whole layer with holes?

    – Erik
    18 hours ago











  • for the whole layer

    – newGIS
    18 hours ago











  • Possible duplicate of How to fill in a ring polygon in QGIS 2.2?

    – Taras
    18 hours ago

















Manually for this one hole? Or for a whole layer with holes?

– Erik
18 hours ago





Manually for this one hole? Or for a whole layer with holes?

– Erik
18 hours ago













for the whole layer

– newGIS
18 hours ago





for the whole layer

– newGIS
18 hours ago













Possible duplicate of How to fill in a ring polygon in QGIS 2.2?

– Taras
18 hours ago





Possible duplicate of How to fill in a ring polygon in QGIS 2.2?

– Taras
18 hours ago










2 Answers
2






active

oldest

votes


















5














I recommend Digitizing Tools plugin.



enter image description here



Once installed, you will find a new toolbar. The eighth from the left of this toolbar, there is an icon called Fill ring with a new feature (interactive).



For you to fill all rings at once;




  1. Switch to Fill all rings in selected polygons with new feature mode by clicking on a small triangle (right-hand-side).

  2. Start editing mode and select polygons you want to work on (you can select all polygons).

  3. Click on the tool icon.

  4. A small dialog box will appear and asks you to give a new attribute value. This value will be given all fillings, so that it helps you to identify these new features in the attribute table. Hit [OK] to close.






share|improve this answer































    1














    You can use the trace tool (on the Snapping Toolbar) and simply trace around the hole in the polygon while creating a new feature in a new layer (or your existing layer).



    enter image description here






    share|improve this answer
























    • i don't want to digitize by manual- i search for automatic action.

      – newGIS
      19 hours ago











    • where the trace tool location?

      – newGIS
      16 hours ago











    • on the Snapping toolbar - look at the one I have ringed in red

      – Ian Turton♦
      16 hours ago











    • your image is too small

      – newGIS
      16 hours ago






    • 1





      it is a tool bar - so no not in plugins. Right click on a grey area and select it

      – Ian Turton♦
      14 hours ago











    Your Answer








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    2 Answers
    2






    active

    oldest

    votes








    2 Answers
    2






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    5














    I recommend Digitizing Tools plugin.



    enter image description here



    Once installed, you will find a new toolbar. The eighth from the left of this toolbar, there is an icon called Fill ring with a new feature (interactive).



    For you to fill all rings at once;




    1. Switch to Fill all rings in selected polygons with new feature mode by clicking on a small triangle (right-hand-side).

    2. Start editing mode and select polygons you want to work on (you can select all polygons).

    3. Click on the tool icon.

    4. A small dialog box will appear and asks you to give a new attribute value. This value will be given all fillings, so that it helps you to identify these new features in the attribute table. Hit [OK] to close.






    share|improve this answer




























      5














      I recommend Digitizing Tools plugin.



      enter image description here



      Once installed, you will find a new toolbar. The eighth from the left of this toolbar, there is an icon called Fill ring with a new feature (interactive).



      For you to fill all rings at once;




      1. Switch to Fill all rings in selected polygons with new feature mode by clicking on a small triangle (right-hand-side).

      2. Start editing mode and select polygons you want to work on (you can select all polygons).

      3. Click on the tool icon.

      4. A small dialog box will appear and asks you to give a new attribute value. This value will be given all fillings, so that it helps you to identify these new features in the attribute table. Hit [OK] to close.






      share|improve this answer


























        5












        5








        5







        I recommend Digitizing Tools plugin.



        enter image description here



        Once installed, you will find a new toolbar. The eighth from the left of this toolbar, there is an icon called Fill ring with a new feature (interactive).



        For you to fill all rings at once;




        1. Switch to Fill all rings in selected polygons with new feature mode by clicking on a small triangle (right-hand-side).

        2. Start editing mode and select polygons you want to work on (you can select all polygons).

        3. Click on the tool icon.

        4. A small dialog box will appear and asks you to give a new attribute value. This value will be given all fillings, so that it helps you to identify these new features in the attribute table. Hit [OK] to close.






        share|improve this answer













        I recommend Digitizing Tools plugin.



        enter image description here



        Once installed, you will find a new toolbar. The eighth from the left of this toolbar, there is an icon called Fill ring with a new feature (interactive).



        For you to fill all rings at once;




        1. Switch to Fill all rings in selected polygons with new feature mode by clicking on a small triangle (right-hand-side).

        2. Start editing mode and select polygons you want to work on (you can select all polygons).

        3. Click on the tool icon.

        4. A small dialog box will appear and asks you to give a new attribute value. This value will be given all fillings, so that it helps you to identify these new features in the attribute table. Hit [OK] to close.







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 18 hours ago









        KazuhitoKazuhito

        14.6k31576




        14.6k31576

























            1














            You can use the trace tool (on the Snapping Toolbar) and simply trace around the hole in the polygon while creating a new feature in a new layer (or your existing layer).



            enter image description here






            share|improve this answer
























            • i don't want to digitize by manual- i search for automatic action.

              – newGIS
              19 hours ago











            • where the trace tool location?

              – newGIS
              16 hours ago











            • on the Snapping toolbar - look at the one I have ringed in red

              – Ian Turton♦
              16 hours ago











            • your image is too small

              – newGIS
              16 hours ago






            • 1





              it is a tool bar - so no not in plugins. Right click on a grey area and select it

              – Ian Turton♦
              14 hours ago
















            1














            You can use the trace tool (on the Snapping Toolbar) and simply trace around the hole in the polygon while creating a new feature in a new layer (or your existing layer).



            enter image description here






            share|improve this answer
























            • i don't want to digitize by manual- i search for automatic action.

              – newGIS
              19 hours ago











            • where the trace tool location?

              – newGIS
              16 hours ago











            • on the Snapping toolbar - look at the one I have ringed in red

              – Ian Turton♦
              16 hours ago











            • your image is too small

              – newGIS
              16 hours ago






            • 1





              it is a tool bar - so no not in plugins. Right click on a grey area and select it

              – Ian Turton♦
              14 hours ago














            1












            1








            1







            You can use the trace tool (on the Snapping Toolbar) and simply trace around the hole in the polygon while creating a new feature in a new layer (or your existing layer).



            enter image description here






            share|improve this answer













            You can use the trace tool (on the Snapping Toolbar) and simply trace around the hole in the polygon while creating a new feature in a new layer (or your existing layer).



            enter image description here







            share|improve this answer












            share|improve this answer



            share|improve this answer










            answered 19 hours ago









            Ian Turton♦Ian Turton

            48k546111




            48k546111













            • i don't want to digitize by manual- i search for automatic action.

              – newGIS
              19 hours ago











            • where the trace tool location?

              – newGIS
              16 hours ago











            • on the Snapping toolbar - look at the one I have ringed in red

              – Ian Turton♦
              16 hours ago











            • your image is too small

              – newGIS
              16 hours ago






            • 1





              it is a tool bar - so no not in plugins. Right click on a grey area and select it

              – Ian Turton♦
              14 hours ago



















            • i don't want to digitize by manual- i search for automatic action.

              – newGIS
              19 hours ago











            • where the trace tool location?

              – newGIS
              16 hours ago











            • on the Snapping toolbar - look at the one I have ringed in red

              – Ian Turton♦
              16 hours ago











            • your image is too small

              – newGIS
              16 hours ago






            • 1





              it is a tool bar - so no not in plugins. Right click on a grey area and select it

              – Ian Turton♦
              14 hours ago

















            i don't want to digitize by manual- i search for automatic action.

            – newGIS
            19 hours ago





            i don't want to digitize by manual- i search for automatic action.

            – newGIS
            19 hours ago













            where the trace tool location?

            – newGIS
            16 hours ago





            where the trace tool location?

            – newGIS
            16 hours ago













            on the Snapping toolbar - look at the one I have ringed in red

            – Ian Turton♦
            16 hours ago





            on the Snapping toolbar - look at the one I have ringed in red

            – Ian Turton♦
            16 hours ago













            your image is too small

            – newGIS
            16 hours ago





            your image is too small

            – newGIS
            16 hours ago




            1




            1





            it is a tool bar - so no not in plugins. Right click on a grey area and select it

            – Ian Turton♦
            14 hours ago





            it is a tool bar - so no not in plugins. Right click on a grey area and select it

            – Ian Turton♦
            14 hours ago


















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