I have a mosaic whose rasters are using a custom coordinate system:
US_IFR Authority: Custom Projection: Lambert_Conformal_Conic false_easting: 0.0 false_northing: 0.0 central_meridian: -95.0 standard_parallel_1: 33.0 standard_parallel_2: 45.0 latitude_of_origin: 39.0 Linear Unit: Meter (1.0) Geographic Coordinate System: GCS_North_American_1983 Angular Unit: Degree (0.0174532925199433) Prime Meridian: Greenwich (0.0) Datum: D_North_American_1983 Spheroid: GRS_1980 Semimajor Axis: 6378137.0 Semiminor Axis: 6356752.314140356 Inverse Flattening: 298.257222101
After adding the rasters, I modify their footprints to trim off unnecessary parts using a feature class to replace the original footprints. The feature class was created in the same custom coordinate system. At this point, the mosaic looks great, all the images are properly stitched together and all the extraneous information is removed.
However, once I project to web mercator:
WGS_1984_Web_Mercator_Auxiliary_Sphere WKID: 3857 Authority: EPSG Projection: Mercator_Auxiliary_Sphere False_Easting: 0.0 False_Northing: 0.0 Central_Meridian: 0.0 Standard_Parallel_1: 0.0 Auxiliary_Sphere_Type: 0.0 Linear Unit: Meter (1.0) Geographic Coordinate System: GCS_WGS_1984 Angular Unit: Degree (0.0174532925199433) Prime Meridian: Greenwich (0.0) Datum: D_WGS_1984 Spheroid: WGS_1984 Semimajor Axis: 6378137.0 Semiminor Axis: 6356752.314245179 Inverse Flattening: 298.257223563
in preparation to publish as a map service, the rasters get bent, but the footprints remain straight lines. This means that some of the desired content is stripped off and some of the undesired content is let in.
Any idea why the footprint did not bend in the same way the raster did?