Defining a SheetScan Coordinate System

Use this procedure to define a coordinate system typically for a graph on a datasheet picture that you have previously loaded into the SheetScan editor.

To define the coordinate system:

Select Coordinate System > New to open the Coordinate System window.
Click the Point1 button.
The Coordinate System window disappears temporarily, and the cursor changes to crosshairs.
Position the cursor over a corner of the datasheet graph, and click the left mouse button.
The Coordinate System window reappears displaying the X- and Y-Coordinate values for the chosen point.
Enter the X-Value and Y-Value for this point. Typically, these values will correspond to the values taken from the axis scale values on the datasheet.
Select the desired scaling (linear, logarithmic, or decibel) for both the X and Y axes.
Repeat steps 2 through 4 for the Point2 and Point3 buttons.
Click OK. The grid is placed in the graphic.

Note:

You can edit the grid after placement either by selecting Coordinate System > Properties from the SheetScan main menu bar, by clicking the coordinate system icon on the Curve toolbar, or by right-clicking in the SheetScan editing window and selecting Coordinate system from the context menu.
You can hide the grid by selecting Grid on the View menu, or by clicking the grid icon on the Curve toolbar.