Orthogonal Calculation dialog box

Use the elements in the dialog box to modify the parameters of an orthogonal calculation.

Note: For enterprise industry models .

Element

Base line for orthogonal surveying.

Click the Highlight icon to show the element in the drawing.

Click Graphic icon to identify another base line.

Type an Offset value or use the Graphic icon to shift the line.

Type a Radius value, if your base line is an arc.

Type an Azimuth value or use the Graphic icon to modify the orientation of the base line.

Point 1/ Point 2

P1 and P2: You can specify the base line by two points and a radius (straight lines radius = 0).

With a point Offset value you can specify a base line that is tangent to a circle with that radius.

If you click a base line in the drawing, the coordinates of the next two vertices are inserted in the dialog box.

Easting/ Northing

You can edit the coordinates in the dialog box or use the Graphic icon to select another point.

Constructed

CP: Coordinates of the calculated point.

Use the Graphic icon to determine the abscissa and ordinate of an existing point. This is useful, if you want to calculate another point with delta values.

Abscissa/ Ordinate

Type the abscissa and ordinate of the new point.

Type negative ordinates to determine points that are left to the base line.

Use the Graphic icon in the Constructed row to transfer the values of an existing point into the dialog box.

Use the Graphic icon in the abscissa or ordinate row to specify the value in the drawing.

Value/ Delta

You can specify the values by an absolute number or by delta values, related to the current value. This is useful if you want to calculate a number of points with the same abscissa or ordinate distances.

Type a delta value and click Calculate. The new value is calculated by adding the delta to the current value. Click Calculate again. The delta is added again.

Distance

Base line properties

Measured

Distance that has been measured in the field.

Calculated

Calculated distance of the base line points P1-P2; read-only.

Factor

Enter a Measured distance to calculate a factor, which is used to adjust the differences between calculated and measured distance proportional to the abscissa values.

Abscissa P1

Abscissa value at point 1; default is 0.00.

If your measurement did not start with the abscissa 0.00 you can type a new value.

If your actual starting point is different to the indicated P1, you can use the Abscissa P1 icon to select this point in the drawing. If the point is not on the selected base line, the projection point is calculated.