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To fix the distortion issue, the user needs to define the projection of the grid. To do this, right-mouse click on the grid layer in the Layer Control and then select Properties. The Grid Settings form will pop up (Figure 5). Move to the Coordinate System tab, click the Define button. Then, the user should select the proper spatial reference, either geographic or UTM coordinate system. In the Caspian Sea case study, for example, the correct coordinate system is UTM, Northern Hemisphere, UTM Zone 39 (Figure 6). Click the OK button to finish projection-defining. Next, right-mouse click on the grid layer in the Layer Control, then select Zoom to Layer option, the grid will be located in the right place (Figure 7).
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Figure 5 Grid Setting form
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