Project
Function Description: Project vector data from one coordinate system to another.
Data Description
If the input feature class data is in DXF format, you need to specify the default coordinate system for the DXF data separately (as DXF data itself cannot store coordinate system information).
The Transformation Options parameter is optional. If geographic or datum transformations are not required, leave it empty. If transformations are needed, you should select the appropriate seven-parameter settings to ensure accurate transformation.
- For example, no geographic transformation is needed when projecting from GCS_North_American_1983 to NAD_1983_UTM_Zone_12N, as both the input and output coordinate systems use the NAD_1983 datum. However, a geographic transformation is needed when projecting from GCS_North_American_1983 to WGS_1984_UTM_Zone_12N, as the input coordinate system uses the NAD_1983 datum while the output coordinate system uses the WGS_1984 datum.
Note: Transformations are bidirectional, meaning if a transformation is required, you need to set different parameters for projecting from the input to the target and from the target back to the input.
It is recommended to project all input data to the same coordinate system before performing analysis.
You must first use the Define Projection tool to define the coordinate system for feature classes with undefined or "unknown" coordinate systems before using the Projection tool, otherwise, projection of such data will fail.
The name of the input feature class is used to name the output feature class. For example, if the input is C:\test\point.shp, the output feature class will be named point.shp. If this name already exists in the output workspace, the system will append a number (e.g., (1)) to the name to ensure its uniqueness (e.g., point(1).shp).
Steps
- Locate the Batch Projection tool under Project in the toolbox and double-click to open the function window.
Project
Parameter Description:
- Input Vector: The feature classes to be projected.
- Target Coordinate System: The coordinate system to which the input data will be projected.
- Conversion Options (Optional): This method can be used for transforming data between two geographic coordinate systems or datums. This optional parameter is needed if the input and output coordinate systems have different datums.
- Default Coordinate System for DXF Data (Optional): This parameter needs to be set if the input data is in .dxf format.
- Output Directory: The directory where the resulting feature classes will be stored.