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Esri software does not have a built-in transformation to convert between NAD 1983 and NAD 1983 CSRS in Ontario. The Ontario Ministry of Natural Resources and Forestry provides an NTv2 file to convert between NAD 1983 (original) and NAD 1983 CSRS. You can download it from COSINE. You have to apply, but it's not onerous, and the NTv2 files are free to ...


You should specify the software you are using when asking this type of question. Based on other questions I gather you are using ArcGIS, which is capable of on-the-fly reprojection. This means it will automatically reproject data to the coordinate system (CRS) of the dataframe (which either you set or is set to that of the first layer you add with a defined ...

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