Setting and Managing Layers > Layer Properties > Setting the Coordinate System of the Layer

Setting the Coordinate System of the Layer

*.prj file is a file recording the coordinate data. The file records the geographic coordinate system or the projection coordinate system. If the file records geographic coordinate system, the file may contain the name of the coordinate system, Datum, Spheroid, Datum Parameters, unit, etc. If the file records projection, besides the items mentioned above, the file also records the projection and parameters. When users want to change the coordinate system of a layer but do not want to set the parameters respectively, users can change the coordinate system by the ways presented in the section.

1. Firstly, double-click the layer in "Data Content", and the Layer Properties window appears. Click "Coordinate System" tab, and you can edit or modify the coordinate system.

2. Click "Select", and you can choose the coordinate system you need in "Select Coordinate System" window. Or you can click "Browse" to select the coordinate file and click "OK." Then, the setting is finished.

3. Also, you can click "New" to create a new coordinate system.

4. Or click "Edit" button to edit the current coordinate system of the layer.

NOTE: If you are in the status of editing, you are not allowed to click button “Select”, “New”, “Edit” and “Clear” in tab “Coordinate System” of “Layer Properties” window.