Making grids in QGIS












2















In QGIS I am trying to make a map with the Maidenhead Locator System overlayed. I am making these overlays with QGIS's create grid tool but the grids are not coming out right.



If I leave the map unprojected the bigger and smaller grid lines are parallel but any projection I use they are not parallel. Does anybody know how to fix this?



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qgis grids-graticules







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    In QGIS I am trying to make a map with the Maidenhead Locator System overlayed. I am making these overlays with QGIS's create grid tool but the grids are not coming out right.



    If I leave the map unprojected the bigger and smaller grid lines are parallel but any projection I use they are not parallel. Does anybody know how to fix this?



    Picture_of_error






    qgis grids-graticules







    share|improve this question



























      2












      2








      2


      1






      In QGIS I am trying to make a map with the Maidenhead Locator System overlayed. I am making these overlays with QGIS's create grid tool but the grids are not coming out right.



      If I leave the map unprojected the bigger and smaller grid lines are parallel but any projection I use they are not parallel. Does anybody know how to fix this?



      Picture_of_error






      qgis grids-graticules







      share|improve this question
















      In QGIS I am trying to make a map with the Maidenhead Locator System overlayed. I am making these overlays with QGIS's create grid tool but the grids are not coming out right.



      If I leave the map unprojected the bigger and smaller grid lines are parallel but any projection I use they are not parallel. Does anybody know how to fix this?



      Picture_of_error






      qgis grids-graticules




      qgis grids-graticules






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 1 hour ago









      Taras

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      2,2892727










      asked 3 hours ago









      jake9wijake9wi

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          The grid creator makes very simple lines with vertices only on each end. You'll need to 'densify' the geometry (adding extra vertices) so that intermediate points can be projected and define the shape of the lines correctly.



          For example, here's an unprojected map with a default grid from QGIS (5° intervals):





          If we change the projection (Aitoff 54043), the lines still render straight but clearly the shape of Africa has changed:





          Using the 'densify by count' tool from processing and adding 50 vertices per line, we get a new grid that seems to curve correctly:





          Editing the vertices of one line of the densified geometry shows how many points define the shape along the way:








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            1 Answer
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            The grid creator makes very simple lines with vertices only on each end. You'll need to 'densify' the geometry (adding extra vertices) so that intermediate points can be projected and define the shape of the lines correctly.



            For example, here's an unprojected map with a default grid from QGIS (5° intervals):





            If we change the projection (Aitoff 54043), the lines still render straight but clearly the shape of Africa has changed:





            Using the 'densify by count' tool from processing and adding 50 vertices per line, we get a new grid that seems to curve correctly:





            Editing the vertices of one line of the densified geometry shows how many points define the shape along the way:








            share|improve this answer




























              2














              The grid creator makes very simple lines with vertices only on each end. You'll need to 'densify' the geometry (adding extra vertices) so that intermediate points can be projected and define the shape of the lines correctly.



              For example, here's an unprojected map with a default grid from QGIS (5° intervals):





              If we change the projection (Aitoff 54043), the lines still render straight but clearly the shape of Africa has changed:





              Using the 'densify by count' tool from processing and adding 50 vertices per line, we get a new grid that seems to curve correctly:





              Editing the vertices of one line of the densified geometry shows how many points define the shape along the way:








              share|improve this answer


























                2












                2








                2







                The grid creator makes very simple lines with vertices only on each end. You'll need to 'densify' the geometry (adding extra vertices) so that intermediate points can be projected and define the shape of the lines correctly.



                For example, here's an unprojected map with a default grid from QGIS (5° intervals):





                If we change the projection (Aitoff 54043), the lines still render straight but clearly the shape of Africa has changed:





                Using the 'densify by count' tool from processing and adding 50 vertices per line, we get a new grid that seems to curve correctly:





                Editing the vertices of one line of the densified geometry shows how many points define the shape along the way:








                share|improve this answer













                The grid creator makes very simple lines with vertices only on each end. You'll need to 'densify' the geometry (adding extra vertices) so that intermediate points can be projected and define the shape of the lines correctly.



                For example, here's an unprojected map with a default grid from QGIS (5° intervals):





                If we change the projection (Aitoff 54043), the lines still render straight but clearly the shape of Africa has changed:





                Using the 'densify by count' tool from processing and adding 50 vertices per line, we get a new grid that seems to curve correctly:





                Editing the vertices of one line of the densified geometry shows how many points define the shape along the way:









                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered 26 mins ago









                SimbamanguSimbamangu

                11k34680




                11k34680






























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