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?



Picture_of_error










share|improve this question





























    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?



    Picture_of_error










    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










      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






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited 1 hour ago









      Taras

      2,2892727




      2,2892727










      asked 3 hours ago









      jake9wijake9wi

      211




      211






















          1 Answer
          1






          active

          oldest

          votes


















          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























            Your Answer








            StackExchange.ready(function() {
            var channelOptions = {
            tags: "".split(" "),
            id: "79"
            };
            initTagRenderer("".split(" "), "".split(" "), channelOptions);

            StackExchange.using("externalEditor", function() {
            // Have to fire editor after snippets, if snippets enabled
            if (StackExchange.settings.snippets.snippetsEnabled) {
            StackExchange.using("snippets", function() {
            createEditor();
            });
            }
            else {
            createEditor();
            }
            });

            function createEditor() {
            StackExchange.prepareEditor({
            heartbeatType: 'answer',
            autoActivateHeartbeat: false,
            convertImagesToLinks: false,
            noModals: true,
            showLowRepImageUploadWarning: true,
            reputationToPostImages: null,
            bindNavPrevention: true,
            postfix: "",
            imageUploader: {
            brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
            contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
            allowUrls: true
            },
            onDemand: true,
            discardSelector: ".discard-answer"
            ,immediatelyShowMarkdownHelp:true
            });


            }
            });














            draft saved

            draft discarded


















            StackExchange.ready(
            function () {
            StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fgis.stackexchange.com%2fquestions%2f316331%2fmaking-grids-in-qgis%23new-answer', 'question_page');
            }
            );

            Post as a guest















            Required, but never shown

























            1 Answer
            1






            active

            oldest

            votes








            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            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














              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 14 mins ago









                SimbamanguSimbamangu

                11k34680




                11k34680






























                    draft saved

                    draft discarded




















































                    Thanks for contributing an answer to Geographic Information Systems Stack Exchange!


                    • Please be sure to answer the question. Provide details and share your research!

                    But avoid



                    • Asking for help, clarification, or responding to other answers.

                    • Making statements based on opinion; back them up with references or personal experience.


                    To learn more, see our tips on writing great answers.




                    draft saved


                    draft discarded














                    StackExchange.ready(
                    function () {
                    StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fgis.stackexchange.com%2fquestions%2f316331%2fmaking-grids-in-qgis%23new-answer', 'question_page');
                    }
                    );

                    Post as a guest















                    Required, but never shown





















































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown

































                    Required, but never shown














                    Required, but never shown












                    Required, but never shown







                    Required, but never shown







                    Popular posts from this blog

                    Ponta tanko

                    Tantalo (mitologio)

                    Erzsébet Schaár