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Coordinate Reference Systems

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I am wondering about WGS84 as we move through time.   My understanding is that any given spot on the earth's surface latitude and longitude will change over time in this system. There are two sources of change:   1) NGA (National Geospatial-Intelligence Agency) will periodically shift the center of the WGS84 ellipsoid to better align with their… (Show more)
in Coordinate Reference Systems
The PROJ4 library supports a Geostationary Satellite View projection. Does Arcgis have any support for this coordinate system, or a way to add support for it?
in Coordinate Reference Systems
I'm looking at the position field under marker properties in dataview, when i use the dropdown to show DD i get -93.8092  51.0779 (which seems reasonable). When i switch that to DMS i get 443315°21'30.2081"E  5658804°23'49.2542"N (which doesn't seem correct), it looks alot like the utm cordinates 443315.3584  5658804.397. Is there something i'm missing in the coordinate system setup? Its set to nad 83 zone 15n, defaulting to meters.
Hey there,   I'm trying to change the projection using the project raster tool.  It changes the colour scheme of the entire image. Is that supposed to occur? I attached the two results. The colourful one is the initial image.
in Coordinate Reference Systems
Hello, I'm a bit new to GIS and am having a bit of an issue I have a .csv that i have converted into a feature class- the feature class displays correctly(it is a map of all robberies in Detroit in a given  year).   I also have a .shp that is all of the locations of the lights in the same city- it also displays correctly, but in a completely… (Show more)
in Coordinate Reference Systems
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