Where can I find this coordinate reference system (wgs84 30N CM 3W) in ArcGIS?

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03-11-2019 02:46 PM
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Occasional Contributor

I have a data with this coordinate reference system (wgs84 30N CM 3W). and I need to load the data in ArcGIS but I can't seem to find it exactly in ArcGIS. First, I will like to know if it's same thing as the usual wgs84 UTM 30N or what is it? Please, how can I deal with this? 

Thanks in advance.

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Occasional Contributor

Thanks Charles. Your explanation was helpful.

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New Contributor II

Hello,

"CM" probably refers to "central meridian". The central meridian of UTM 30N is 3°W, so it seems a good bet that WGS 84 UTM 30N is the correct coordinate system. You should be able to verify this by doing the following:

  1. Use "Define Projection" to assign WGS 84 UTM 30N to a copy of your data.
  2. Load the result in a map and check that it agrees with either a base map or with data for which you know the correct coordinate system.

-Charles

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Occasional Contributor

Thanks Charles. Your explanation was helpful.

View solution in original post

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