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Creating spherical texture map from QGIS World map?



The 2019 Stack Overflow Developer Survey Results Are InAuto generate map from natural earth data with QGIS or other utilityGeoreferencing Vector Layer (shp) from Mollweide Projection to Custom CRS in QGISExporting high-resolution world map image from QGIS?Creating a World Population Density MapUnable to render globe map in QGISAppropriate Japan US comparison mapCreating a world map centered on another meridian in QGISDownloading raster from Natural Earth world raster directly into QGIS?Get correct measurements for fantasy world mapStarting a QGIS project for a fantasy world map from raster images



.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








2















Right now I am building an application in OpenGL. The application maps a spherical Earth texture map to a polygon approximating a sphere. When I use any of the sphere textures such as from http://planetpixelemporium.com, the map fits neatly and latitude and longitude values returned are accurate. However I am unable to successfully map a image created from QGIS to the sphere. The map appears slanted to one side.



I assumed this was because the spherical textures are different from the images produced by QGIS. Now using QGIS and https://www.naturalearthdata.com/ for maps would be a great asset for my project.



Is there a way to map this into the texture format that fits my OpenGL sphere?



Update: The map created in QGIS can be applied the Miller Cylindrical Projection. This allows mapping of the natural earth data (which is quite good) to an OpenGL texture map (according to my code). However this map becomes increasingly inaccurate as the poles are approached with respect to latitude.



If any one has any other suggestions, I'm still working on a better solution.










share|improve this question









New contributor




Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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  • What format are the "sphere texture" files in?

    – csk
    Apr 4 at 18:41











  • "These maps are simple cylindrical projections, designed to be applied to spheres using spherical projection. If you use any other projection method, the map will appear distorted on the final product." - planetpixelemporium.com/planets.html

    – csk
    Apr 4 at 19:18











  • That's just it. I don't know. The type of files, planetpixelemporium.com/earth.html, map accurately to my sphere in OpenGL. The images I produce in QGIS however map in some slanted orientation. The latitude maps correctly but not the longitude. Here I am assuming their is some special process to making spherical texture for OpenGL and I want to know how.

    – Charles Dake
    Apr 4 at 19:19











  • So I applied Sphere_Miller_Cylindrical for a coordinate reference system and I got some luck. It is not quite as accurate as the mapping from the site. There cylindrical map was probably chose because it fits a sphere nicely. With what I am using, the latitudes become less accurate as they approach the poles.

    – Charles Dake
    Apr 4 at 20:11











  • If your issue is fixed, feel free to post the solution as an answer to help other site visitors with the same issue. If you're not quite satisfied and hope for more help, please update (edit) your question with the information you just mentioned, so others can understand the full question without having to mine the comments for information. Good luck.

    – csk
    Apr 4 at 20:28

















2















Right now I am building an application in OpenGL. The application maps a spherical Earth texture map to a polygon approximating a sphere. When I use any of the sphere textures such as from http://planetpixelemporium.com, the map fits neatly and latitude and longitude values returned are accurate. However I am unable to successfully map a image created from QGIS to the sphere. The map appears slanted to one side.



I assumed this was because the spherical textures are different from the images produced by QGIS. Now using QGIS and https://www.naturalearthdata.com/ for maps would be a great asset for my project.



Is there a way to map this into the texture format that fits my OpenGL sphere?



Update: The map created in QGIS can be applied the Miller Cylindrical Projection. This allows mapping of the natural earth data (which is quite good) to an OpenGL texture map (according to my code). However this map becomes increasingly inaccurate as the poles are approached with respect to latitude.



If any one has any other suggestions, I'm still working on a better solution.










share|improve this question









New contributor




Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.




















  • What format are the "sphere texture" files in?

    – csk
    Apr 4 at 18:41











  • "These maps are simple cylindrical projections, designed to be applied to spheres using spherical projection. If you use any other projection method, the map will appear distorted on the final product." - planetpixelemporium.com/planets.html

    – csk
    Apr 4 at 19:18











  • That's just it. I don't know. The type of files, planetpixelemporium.com/earth.html, map accurately to my sphere in OpenGL. The images I produce in QGIS however map in some slanted orientation. The latitude maps correctly but not the longitude. Here I am assuming their is some special process to making spherical texture for OpenGL and I want to know how.

    – Charles Dake
    Apr 4 at 19:19











  • So I applied Sphere_Miller_Cylindrical for a coordinate reference system and I got some luck. It is not quite as accurate as the mapping from the site. There cylindrical map was probably chose because it fits a sphere nicely. With what I am using, the latitudes become less accurate as they approach the poles.

    – Charles Dake
    Apr 4 at 20:11











  • If your issue is fixed, feel free to post the solution as an answer to help other site visitors with the same issue. If you're not quite satisfied and hope for more help, please update (edit) your question with the information you just mentioned, so others can understand the full question without having to mine the comments for information. Good luck.

    – csk
    Apr 4 at 20:28













2












2








2








Right now I am building an application in OpenGL. The application maps a spherical Earth texture map to a polygon approximating a sphere. When I use any of the sphere textures such as from http://planetpixelemporium.com, the map fits neatly and latitude and longitude values returned are accurate. However I am unable to successfully map a image created from QGIS to the sphere. The map appears slanted to one side.



I assumed this was because the spherical textures are different from the images produced by QGIS. Now using QGIS and https://www.naturalearthdata.com/ for maps would be a great asset for my project.



Is there a way to map this into the texture format that fits my OpenGL sphere?



Update: The map created in QGIS can be applied the Miller Cylindrical Projection. This allows mapping of the natural earth data (which is quite good) to an OpenGL texture map (according to my code). However this map becomes increasingly inaccurate as the poles are approached with respect to latitude.



If any one has any other suggestions, I'm still working on a better solution.










share|improve this question









New contributor




Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












Right now I am building an application in OpenGL. The application maps a spherical Earth texture map to a polygon approximating a sphere. When I use any of the sphere textures such as from http://planetpixelemporium.com, the map fits neatly and latitude and longitude values returned are accurate. However I am unable to successfully map a image created from QGIS to the sphere. The map appears slanted to one side.



I assumed this was because the spherical textures are different from the images produced by QGIS. Now using QGIS and https://www.naturalearthdata.com/ for maps would be a great asset for my project.



Is there a way to map this into the texture format that fits my OpenGL sphere?



Update: The map created in QGIS can be applied the Miller Cylindrical Projection. This allows mapping of the natural earth data (which is quite good) to an OpenGL texture map (according to my code). However this map becomes increasingly inaccurate as the poles are approached with respect to latitude.



If any one has any other suggestions, I'm still working on a better solution.







qgis natural-earth opengl






share|improve this question









New contributor




Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited Apr 4 at 20:51







Charles Dake













New contributor




Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked Apr 4 at 17:47









Charles DakeCharles Dake

112




112




New contributor




Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Charles Dake is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • What format are the "sphere texture" files in?

    – csk
    Apr 4 at 18:41











  • "These maps are simple cylindrical projections, designed to be applied to spheres using spherical projection. If you use any other projection method, the map will appear distorted on the final product." - planetpixelemporium.com/planets.html

    – csk
    Apr 4 at 19:18











  • That's just it. I don't know. The type of files, planetpixelemporium.com/earth.html, map accurately to my sphere in OpenGL. The images I produce in QGIS however map in some slanted orientation. The latitude maps correctly but not the longitude. Here I am assuming their is some special process to making spherical texture for OpenGL and I want to know how.

    – Charles Dake
    Apr 4 at 19:19











  • So I applied Sphere_Miller_Cylindrical for a coordinate reference system and I got some luck. It is not quite as accurate as the mapping from the site. There cylindrical map was probably chose because it fits a sphere nicely. With what I am using, the latitudes become less accurate as they approach the poles.

    – Charles Dake
    Apr 4 at 20:11











  • If your issue is fixed, feel free to post the solution as an answer to help other site visitors with the same issue. If you're not quite satisfied and hope for more help, please update (edit) your question with the information you just mentioned, so others can understand the full question without having to mine the comments for information. Good luck.

    – csk
    Apr 4 at 20:28

















  • What format are the "sphere texture" files in?

    – csk
    Apr 4 at 18:41











  • "These maps are simple cylindrical projections, designed to be applied to spheres using spherical projection. If you use any other projection method, the map will appear distorted on the final product." - planetpixelemporium.com/planets.html

    – csk
    Apr 4 at 19:18











  • That's just it. I don't know. The type of files, planetpixelemporium.com/earth.html, map accurately to my sphere in OpenGL. The images I produce in QGIS however map in some slanted orientation. The latitude maps correctly but not the longitude. Here I am assuming their is some special process to making spherical texture for OpenGL and I want to know how.

    – Charles Dake
    Apr 4 at 19:19











  • So I applied Sphere_Miller_Cylindrical for a coordinate reference system and I got some luck. It is not quite as accurate as the mapping from the site. There cylindrical map was probably chose because it fits a sphere nicely. With what I am using, the latitudes become less accurate as they approach the poles.

    – Charles Dake
    Apr 4 at 20:11











  • If your issue is fixed, feel free to post the solution as an answer to help other site visitors with the same issue. If you're not quite satisfied and hope for more help, please update (edit) your question with the information you just mentioned, so others can understand the full question without having to mine the comments for information. Good luck.

    – csk
    Apr 4 at 20:28
















What format are the "sphere texture" files in?

– csk
Apr 4 at 18:41





What format are the "sphere texture" files in?

– csk
Apr 4 at 18:41













"These maps are simple cylindrical projections, designed to be applied to spheres using spherical projection. If you use any other projection method, the map will appear distorted on the final product." - planetpixelemporium.com/planets.html

– csk
Apr 4 at 19:18





"These maps are simple cylindrical projections, designed to be applied to spheres using spherical projection. If you use any other projection method, the map will appear distorted on the final product." - planetpixelemporium.com/planets.html

– csk
Apr 4 at 19:18













That's just it. I don't know. The type of files, planetpixelemporium.com/earth.html, map accurately to my sphere in OpenGL. The images I produce in QGIS however map in some slanted orientation. The latitude maps correctly but not the longitude. Here I am assuming their is some special process to making spherical texture for OpenGL and I want to know how.

– Charles Dake
Apr 4 at 19:19





That's just it. I don't know. The type of files, planetpixelemporium.com/earth.html, map accurately to my sphere in OpenGL. The images I produce in QGIS however map in some slanted orientation. The latitude maps correctly but not the longitude. Here I am assuming their is some special process to making spherical texture for OpenGL and I want to know how.

– Charles Dake
Apr 4 at 19:19













So I applied Sphere_Miller_Cylindrical for a coordinate reference system and I got some luck. It is not quite as accurate as the mapping from the site. There cylindrical map was probably chose because it fits a sphere nicely. With what I am using, the latitudes become less accurate as they approach the poles.

– Charles Dake
Apr 4 at 20:11





So I applied Sphere_Miller_Cylindrical for a coordinate reference system and I got some luck. It is not quite as accurate as the mapping from the site. There cylindrical map was probably chose because it fits a sphere nicely. With what I am using, the latitudes become less accurate as they approach the poles.

– Charles Dake
Apr 4 at 20:11













If your issue is fixed, feel free to post the solution as an answer to help other site visitors with the same issue. If you're not quite satisfied and hope for more help, please update (edit) your question with the information you just mentioned, so others can understand the full question without having to mine the comments for information. Good luck.

– csk
Apr 4 at 20:28





If your issue is fixed, feel free to post the solution as an answer to help other site visitors with the same issue. If you're not quite satisfied and hope for more help, please update (edit) your question with the information you just mentioned, so others can understand the full question without having to mine the comments for information. Good luck.

– csk
Apr 4 at 20:28










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