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Traverse PC has lots of COGO (COordinate GeOmetry) tools.  These tools help you create new survey points and modify existing survey points to get them exactly where you want them.

Learning COGO

How COGO Works

All COGO in TPC is build in. You never leave the program to do a COGO routine. Some COGO happens automatically, like when you enter a radius in a Traverse View and TPC changes that line from a tangent to a curve. Some COGO happens via COGO commands and dialogs. At the bottom of this page you'll find a partial list of COGO tools available in TPC. You can also look under COGO in the table of contents and index. See COGO Commands.

One of Each

As a rule, TPC has just one instance of each COGO dialog. So for instance, there is just one Rotate dialog. You can close it and re-open it any number of times without loosing any of its data. And since dialogs remember where they were on your desktop, you'll always find them popping up in the last place you used them.

Accessing COGO Commands

How you access a COGO command affects how the COGO dialog is initialized. If you select two points in the Points Manager, then access the Random Inverse dialog, the two selected points become the From and To points in the dialog. Know how TPC access COGO dialogs can help you become more proficient with the COGO tools.

Determining What Data is Affected

Some COGO commands like Rotate and Translate, can be used to changed just selected data in a survey or the entire survey. The choice is yours. TPC makes it easy to identify the data that will be affected by listing the options in a pull down list called the What list. See What Data COGO Works With.

Learn to use the Traverses Manager to save time and create consistent results. For example, if you have 3 traverses you need to rotate and translate onto your survey grid, consider selecting those 3 traverses in the Traverses Manager then when you rotate and translate, pick '3 Selected items in Traverses Manager' from the What list. All 3 traverses will be modified together, the same way at the same time. Consider this for creating construction set back lines in lots, stationing road centerlines, determining offsets to an alignment and other COGO routines.

Labeling COGO Points

You can recall existing points in a COGO dialog and update their coordinates or you can create new points as needed. See Labeling COGO Points

Plotting COGO Points

Many dialogs that allow you to Save a created COGO point also allow you to plot it so you can check it's location to make sure it's right. See Plotting COGO Points

Common Dialog Buttons

COGO dialogs include common buttons like Compute, Undo, Clear and Close. Learning these buttons will help you use the COGO dialogs more efficiently.

Related Topics

COGO Commands


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