## Angles

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### Angles

How do I find the angle that three draw points make?
SebagoLakeRanch
Tenderfoot

Posts: 40
Joined: Mon Feb 15, 2010 8:44 pm
Location: Gorham, ME

### Re: Angles

The Draw Edit feature shows the bearings in Topo. Perhaps that is a start.
John Moran_2
DeLorme Guru

Posts: 6392
Joined: Fri Nov 09, 2007 6:10 pm

### Re: Angles

I figured I could do that, would require some math. What I'm doing is some high tensile electric fence estimates. Under a certain angle I don't have to make a brace, over a certain angle I do. I'd like to be able to click on three waypoints and know what the angle is.
SebagoLakeRanch
Tenderfoot

Posts: 40
Joined: Mon Feb 15, 2010 8:44 pm
Location: Gorham, ME

### Re: Angles

I perform this task quite often. I have never figured out a way to automate the process. The calculator gets my business on this one. If anyone has figured this out, please speak up.
~ Buz ~

Buz Steele
Trailmaster

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Joined: Fri Sep 26, 2003 6:34 pm
Location: Home at Last....Finally

### Re: Angles

Try this:

1 - In the Draw tab, select the Polygon tool. If it's not currently visible, you will need to click and hold either the Circle or Rectangle tool to expose the three area options.
2 - On the right of the Draw tab, select the radio button next to Distance/Bearing.
3 - Click the arrow next to the Bearing field and select Angle. Note that Bearing is always relative to true or magnetic north (whichever is selected in the display options) and Angle relates to the previous line segment.
4 - Make sure Show Measurement is checked and use the Polygon tool to trace the path denoted by your three points.
5 - Before clicking on the third point, note the angle displayed next to the cursor.

Hope this helps.
David McKittrick
DeLorme
DMcKittrick
Tenderfoot

Posts: 19
Joined: Wed Mar 29, 2006 9:53 am
Location: DeLorme

### Re: Angles

Thanks David. Now if only you could make that polygon snap to gis objects.
~ Buz ~

Buz Steele
Trailmaster

Posts: 1854
Joined: Fri Sep 26, 2003 6:34 pm
Location: Home at Last....Finally

### Re: Angles

Well, I'll be . . . .

It also works in Topo9.
JM_2
John Moran_2
DeLorme Guru

Posts: 6392
Joined: Fri Nov 09, 2007 6:10 pm

### Re: Angles

Buz Steele wrote:Thanks David. Now if only you could make that polygon snap to gis objects.

Buz,

The GIS polygon tool will snap to GIS points. If you're using GIS layers, the angle is displayed in the COGO editing window which can be opened using the button next to the Draw Object tool in the toolbar at the top of the screen.
David McKittrick
DeLorme
DMcKittrick
Tenderfoot

Posts: 19
Joined: Wed Mar 29, 2006 9:53 am
Location: DeLorme

### Re: Angles

Nah, that's no good. The native resolution on my laptop is 1920 X 1200 and I have the DPI setting jacked up to 125% so these old eyes can see what's going on. At this setting, I cannot push the buttons. I already have the dialog resized to it's extents.
Attachments
COGO Dialog.jpg (30.15 KiB) Viewed 3244 times
~ Buz ~

Buz Steele
Trailmaster

Posts: 1854
Joined: Fri Sep 26, 2003 6:34 pm
Location: Home at Last....Finally

### Re: Angles

I'm not sure why the Help, Finish and Apply buttons are not visible in your COGO dialog box (I'll defer to my more under-the-hood savvy colleagues), but in the context of the issue previously described, you don't actually need them. With this window open and the Angle tab selected, you will see continually updated information about the polygon that you are creating using the adjacent Draw Object tool. When the polygon is complete and you have been able to ascertain the appropriate angle, you can simply close the window or move on to the next polygon.
David McKittrick
DeLorme
DMcKittrick
Tenderfoot

Posts: 19
Joined: Wed Mar 29, 2006 9:53 am
Location: DeLorme

### Re: Angles

Thanks David, I'll give her a whirl.
~ Buz ~

Buz Steele
Trailmaster

Posts: 1854
Joined: Fri Sep 26, 2003 6:34 pm
Location: Home at Last....Finally

### Re: Angles

Exactly what I was looking for David, Thanks.
SebagoLakeRanch
Tenderfoot

Posts: 40
Joined: Mon Feb 15, 2010 8:44 pm
Location: Gorham, ME