FreeCOGO Quadrant is a free co-ordinate geometry program targeting student surveyors/civil engineers.
It uses quadrant bearings for input and output.
Bearings are entered in dd.mmss format prefixed by a quadrant number:-
(1 NE, 2 SE, 3 SW, 4 NW).
Full circle azimuths may be entered in quadrants 1 and 3 (CW from North or CW from South).
Download from the link below:-
FreeCOGO Quadrant
Be sure to read the README file in the zip before installation and the Guidelines Help topic when the program is run.
I would be grateful for any suggestions and feedback.
TIA.
Barry Graham
Melbourne, Australia
I use these. Feel free to lift any ideas you like.
Bearing entries.
When the program asks for a bearing:
NE or 1 calls a northeast bearing.
SE or 2 calls a southeast bearing.
SW or 3 calls a southwest bearing.
NW or 4 calls a northwest bearing.
DR or 5 calls a right deflection (90? shortcut: DR9 or 5.9).
IL or 6 calls an interior left angle (90? shortcut: IL9 or 6.9).
IR or 7 calls an interior right angle (90? shortcut: IR9 or 7.9).
DL or 8 calls a left deflection (90? shortcut: DL9 or 8.9).
AZ or 9 calls an azimuth.
All of the above are followed by a request for degrees, minutes, and seconds. The automatic default for each (D,M,S) is zero.
A default (ENTER without an entry) during a bearing input will automatically recall and enter the previous bearing.
XXX/YYY.DDDMMSS will automatically calculate and use the bearing between those points, adding the specified angle, if any, to the right. Example: 123/456.0952044 will calculate the bearing between points 123 and 456 and add 95?20'44".
XXX/YYY-DDDMMSS will automatically calculate and use the bearing between those points, subtracting the specified angle, if any, to the left. Example: 123/456- 1145236 will calculate the bearing between points 123 and 456 and subtract 114?52'36".
ZZZ.DDDMMSS, where ZZZ is a previously stored bearing number in the range from 10 to 9999, will recall that bearing from the disk, add the specified angle, if any, to the right, and use the resulting bearing. Example: 20.09 will recall bearing 20 and add 90?.
ZZZ-DDDMMSS, where ZZZ is a previously stored bearing number in the range from 10 to 9999, will recall that bearing from the disk, subtract the specified angle, if any, to the left, and use the resulting bearing. Example: 35-09 will recall bearing 35 and subtract 90?.
In DDDMMSS preceding digits must be entered; trailing zeroes may be dropped.
The OP's program sounds similar to Microsurvey.
145.4545 is N 45-45-45 E and so on. It's all entered on one line which is fast once you get used to it.
My understanding and learning is that the universal codes are:
NE or 1 calls a northeast bearing.
SE or 2 calls a southeast bearing.
SW or 3 calls a southwest bearing.
NW or 4 calls a northwest bearing.
AZ or 5 calls a azimuth.
IL or 6 calls an interior left angle.
IR or 7 calls an interior right angle.
DL or 8 calls a left deflection.
DR or 9 calls aright deflection.
from CARLSON SURVEYOR 1
0.02 cents
*I do hope to upgrade from CARLSON SURVEYOR 1 some day, cause my win98 is not going to last forever.
😉
in Microsurvey cogo if you want to turn 90 right from 1 looking at 2 you enter "1..2+90" on the bearing line.
I think Carlson Survey 2008 (which I own one copy) remembers your last course so you can turn the angle off of it. This is how the old Sierra Cybernetics cogo worked too.
In Carlson Surveyor 1, to sideshot at right angles the code was L for left and R for right of the backsite.
I was first introduced to those same codes in Trig 1968 and long before Carlson and any computer learning. They were used for our note keeping. The teacher always taught outside the book and used real applications as much as possible and he also had worked for a surveyor.
😉
High,
Is there a version for the iPhone?
thanx,
Geezer
In answer to Geezer - Afraid not.
FreeCOGO Quadrant can be installed to and run from a USB stick on a laptop but otherwise it is not available for portable devices.
