Great Circle Distance Dialog
See Also
To find the Great Circle Distance between any two points of longitude, latitude, select
The Great Circle Distance Dialog allows the calculation of distance between two points of longitude, latitude. The Great Circle Distance Calculation assumes that the earth is a sphere and makes no adjustments for the actual flattening of the earth. The two longitude, latitude points can either be entered manually for any two valid points or can be chosen from valid longitude, latitude values stored with either buses or substations. Valid longitude values are between -180 and 180 degrees. Valid latitude values are between -90 and 90 degrees. The calculated distance is given in either kilometers or miles.
From Location
Click the Choose From Location button to choose either the location of a bus or substation as the From Location. The Latitude (degrees) and Longitude (degrees) entries for the From Location will be filled in with the latitude, longitude information that is stored with the chosen element in the case data. These entries are not based on the location of a display object, if one exists, of the chosen element. If the element does not have valid geographic information stored, the values that are entered for the latitude, longitude will not be valid.
The Latitude, Longitude entries can also be entered manually.
To Location
Click the Choose To Location button to choose either the location of a bus or substation as the To Location. The Latitude (degrees) and Longitude (degrees) entries for the To Location will be filled in with the latitude, longitude information that is stored with the chosen element in the case data. These entries are not based on the location of a display object, if one exists, of the chosen element. If the element does not have valid geographic information stored, the values that are entered for the latitude, longitude will not be valid.
The Latitude, Longitude entries can also be entered manually.
Units
Choose the units in which to report the calculated distance.
Calculate Distance
Click this button to calculate the distance in the chosen Units between the From Location and the To Location. The calculated distance will appear in the box above the button. Error in input data will be returned if there is a problem with any of the latitude, longitude information.