Write out a new dataset using the data frame's coordinate reference system. The funky WGS 1984 'sphere' conversion is done in the projection algorithm, rather than via a geographic/datum transformation. If it does, right click the layer and select Data, Export Data. If you're using EPSG:3857 / ESRI: 102100 / OpenLayers:900913, you don't need to do anything different than converting to the regular old EPSG:4326, WGS 1984. OK all dialogs and see if the data lines up better.ĥ. Leave the transformation parameters set to zeroes.Ĥ. In the new dialog, set the transformation method to Geocentric_Translations. You can export the map to a specific PDF (PDF Maps). Open data frame properties Click the Transformations tab on theĢ. MAPublisher allows you to create ready to use maps, which you can open on your PC, transfer on a smartphone or integrate into your website. I am stuck and cannot proceed to make a map due to this issue. I cannot perform the reprojection function in ArcGIS as I do not have the formula for geographic transformation. Some are using Sphere Mercator, others using WGS84. When building an application, all geographic data must either use a common spatial reference or be. I have multiple datasets in my ArcGIS, each having different map projections. It controls how and where features are displayed in a map or scene. A spatial reference defines the coordinate system used to locate the geometry for a feature. If it doesn't line up, try adding a transformation in ArcMap. Spatial references are important when building applications that use geographic data. Then use the Project Tool to convert it to EPSG:3857. Does the Sphere_Mercator line up correctly? If so, unproject it to "Sphere" GeoCRS using the Project Tool, then use the Define Projection tool to change the CRS to WGS 1984. Set the data frame to use the WGS 1984-based CRS. If you have reference data in WGS 1984 that you can compare the Sphere_Mercator data to, add both to ArcMap. The data may have been built on the sphere, or it might have been built on WGS 1984 and then projected to the Sphere_Mercator CRS. Whereas the Mercator projection uses a vertically-oriented cylinder projection tangent to the equator. The major difference between this projection is that it uses a spherical formula at all scales. This leads to more distortions, especially when you move away from the equator, that make the Web Mercator non-conformal. The Web Mercator projection uses a modified version of the Mercator projection and has become a default map projection for web mapping. ArcGIS doesn't have any predefined geographic/datum transformations that convert to or from a sphere. Web Mercator uses WGS 84 Lat/Long as if they were angles on a sphere, presumably to reduce the processing time. This projected coordinate reference system (CRS) is using a sphere-based geographic CRS. Sin embargo, Web Mercator usa las fórmulas esféricas en todas las escalas, mientras que los mapas de Mercator. Utiliza las mismas fórmulas que el Mercator estándar que se usa para mapas a pequeña escala. The problem is almost certainly with the "Sphere_Mercator" data. Web Mercator es una ligera variante de la proyección de Mercator, utilizada principalmente en programas cartográficos basados en la Web.
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