"Forward" Point File Conversion Settings

The Forward Tab dialog is split in half with the Input settings on the left side and the Output settings on the right side.

Using the drop down boxes, select the column name that relates to the appropriate data type. The Calculator will label the text box according to which coordinate systems have been set in the Point Database Conversions tab.  The conversion will be calculated using either Geodetic or Rhumb Line which can be set in Preferences.

For example, if the user is converting geodetic points (Lat/Long), the text boxes will indicate Latitude and Longitude. For grid (UTM, State Plane, etc) the labels will indicate North/South and East/West where appropriate. This is true for both the Input and Output sides of the dialog.  There are two ways to setup Forward calculations, using Distance and Azimuth, or by CCG string.  

Input Settings

With either method, you must use the drop down menus on the input side to specify the columns containing the starting coordinates.

In order to compute Forward coordinates, the user must specify 3 parameters (Input side only) :

  1. Geodetic or Grid: Choose the appropriate radio button for the type of distance you are entering

  2. Distance: Use the drop down box to specify the column containing the Distance values and specify the type of unit the distance values represent.

  3. Azimuth: Use the drop down box to specify the column containing the Azimuth values

In order to compute Forward coordinates, the user must specify 3 parameters (Input side only) :

  1. Choose the CCG radio button

  2. CCG String: Use the drop down box to select the column containing the CCG strings

Output Settings

The output of a Forward calculation is a coordinate point (scale and convergence values are optional output for projected systems).  On the Output side of the Conversion Settings window you will need to specify columns in the Point Database Grid for your ending coordinates.  If you do not have existing columns in the point database for output data, you can use the Add buttons to insert new columns into the grid.

  

Optional setting: Use Output Point For Next Input Point

This option allows the user to assign the newly calculated point as the next input point. Check the box to enable this feature.

 

Example

SEE ALSO:

Single Point Forward Calculations