把说明书里面话搬出来吧 B
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Orientation - For polar charts only: Specifies the orientation of lines and coordinates from the drop-down list. It defines the location of 0 degrees latitude. (You can orient the data on the chart to Up, Down, Left, or Right. See Orienting a Receiver for more information. dh K<5E
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If most of your lines point downward and you select Right for example, the lines and the chart coordinates shift to the right, as shown in the following figure. wrm
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