9.3.7.16 The (Plot Details) Vector Tab

The vectors in both XYAM and XYXY graphs are customized on the Plot Details Vector tab. The vector tab for XYXY graphs in rectangular and polar coordinate both The vector tab for Compass Plot The vector tab for XYAM graphs in rectangular coordinate

 Scale Length with Magnitude Scale the lengths of the arrowheads according to changes in magnitude of the vectors. Available options include: None All the arrowheads share the same length, specified by Length. Log The lengths of the arrowheads have a logarithmic relationship with the lengths of the vectors. Linear The lengths of the arrowheads have a linear relationship with the lengths of the vectors. Determines the length of the arrowheads. Units are measured in points. Determines the arrowhead angles in degrees. Select the Closed radio button to display filled arrowheads. Select the Open radio button to display the hollow (transparent) arrowheads.

Color

Select a vector color from the Color button.

Style

Change the line style for the vector. You can also do the changes with the Line/Border tool in the Style toolbar.

Width

Type or select the desired vector width from the Width combination box. Units are measured in points.

Transparency

Adjust the slider or enter a number in the combo box to apply transparency to vectors. Scale adjusts from 0 (not transparent) to 100 (fully transparent).

For special points, an Auto check box is used to follow the transparency setting of other vectors. Clear the checkbox to adjust transparency of the special point.

End Point group controls (XYXY)

Select the column that contains the X end point values from the X End drop-down list.

Select the column that contains the Y end point values from the Y End drop-down list.

 Note: For Polar Vector theta r theta r, X End is used to specify the column which contains the angle coordinates of end points on Angular Axis and Y End is used to specify the column which contains the radial coordinates of the end points on Radial Axis. For Compass Plot, the center of the polar is the start point, and the source XY columns are the columns which contain the angle coordinates and the radial coordinates of the end points separately. So, there is no X End and Y End options in theVector tab.

Vector Data group controls (XYAM)

These controls apply only to XYAM graphs.

 Angle Select the column that contains the vector angle values from the Angle combination box. Alternatively, select a value from this combination box. The angle is measured counterclockwise from a line parallel to the X axis, bisecting the vector. The units are controlled by the Angular Unit drop-down list below. Select the column that contains the vector magnitude values from the Magnitude combination box. Alternatively, select a value from this combination box. Units are measured in points.

Magnitude (XYAM)

These controls apply only to XYAM graphs.

Magnitude Multiplier Select or type a value to proportionally increase or decrease the length of the vectors from the Magnitude Multiplier combination box. For example, type .5 to draw the vectors at half their original length. The default value is 1, so that the Magnitude combination box value determines the vector lengths. If this check box is selected, the magnitude are interpreted in real world coordinates, and are used to compute fixed x, y values of the end point of the vector. The magnitude displayed in the graph will change when the X or Y axes scales are changed, but they will remain constant in real world coordinates. If this check box is not selected, the magnitude are interpreted relative to the graph layer.

Position group controls (XYAM)

Select the desired radio button to apply XY coordinate values to the Head, Midpoint, or Tail of the vector.

Angle (XYAM)

These controls apply only to XYAM graphs.

Angle Units Select the unit for the angles. System Uses the setting in the Angular Units group in the Preferences: Options as the unit for angles. Radians Uses radians as the unit for angles. Degrees Uses degrees as the unit for angles. Grads Uses grads as the unit for angles. Polar If this radio button is selected, the Offset Angle turn to 0 and Direction turn to CCW. Both options are grayed out, but updated. Meteorological If this radio button is selected, the Offset Angle turn to 90 and Direction turn to CW. Both options are grayed out, but updated. Custom If this radio button is selected, the Offset Angle and Direction options are editable. Type or select the degree of offset angle for the vectors. When the vector Angle value and the Offset Angle are 0, the vector direction will be at 3 o'clock. Specify the direction for Offset Angle. CW The vectors will rotate in the Clockwise direction. CCW The vectors will rotate in the Counter-Clockwise direction.