Points on Arc
This feature allows you to create points along an arc. The first
point is set at a distance measured along the arc starting at the
PC.
Enter PC point or pick a C&G Curve: enter or pick the PC
point or pick a C&G curve.
If you picked a C&G Curve, the PC, Radius point, Pt point and
arc length will be displayed at the command line. After
picking a C&G Curve, skip the next 2 steps.
Enter PT point: Enter or pick the PT point.
Enter radius point [cLockwise/ccW]: For a clockwise curve either
type L or ’+’ and <Enter> then pick or type a point ID or
type a point ID preceded by a ’+’. For a counter clockwise curve
either type a W or a ‘-’ and <Enter> then pick or type
a point ID or type a point ID preceded by a ’-’ .
Enter arc length [Occupy/Multiple points] <0.000000>:
Occupy option
In occupy mode the points are located along the arc with the arc
length being measured from the previous point. Thus the
occupied point moves ahead to the last computed point as
calculations proceed. When you type O and <Enter> the prompt
becomes:
Enter arc length [do not Occupy/Multiple points]
<0.000000>:
Specify the arc length at the prompt.
A point will be created and you will be prompted for the next arc
length. Continue entering arc lengths until done then press
<Esc> to return to the Enter PC point or pick a C&G
Curve: prompt.
Multiple points option
This option allows you to compute multiple points along the arc at
a given distance. The specified distance is used to set as
many points along the arc as will fit between the PC and the
PT. When you type M and <Enter> the prompt becomes:
Enter arc length [do not Occupy/Single point] <0.000000>:
Specify the arc length at the prompt.
A as many points as can be fit between the PC and the PT will be
created. You will then be prompted for the next arc length.
Continue entering arc lengths until done then press <Esc> to
return to the Enter PC point or pick a C&G Curve: prompt.
At the Enter PC point or pick a C&G Curve: prompt you can
continue specifying curves or you can press <Esc> to end the
command.
Prompts
Enter PC point or pick a C&G
Curve: Enter a point ID or pick a point symbol or a C&G
Arc on the screen. Press Esc to end the command.
Enter PT point: Enter
or pick the PT point.
Enter radius point
[cLockwise/ccW]: For a clockwise curve either type "L" (or a
plus sign (’+’)) and <Enter> then pick or type a point ID or
type a point ID preceded by a ’+’. For a counter clockwise curve
either type a "W" (or a minus sign (‘-’)) and <Enter>
then pick or type a point ID or type a point ID preceded by a ’-’
.
Enter arc length [Occupy/Multiple
points] <0.000000>: Enter an arc length to create a
single point on the arc. Enter "O" and Enter to "occupy" the
calculated point so the next arc length is calculated from that
point instead of the PC. Enter "M" and Enter to calculate
multiple points along the arc at a specified distance.
Enter arc length [do not
Occupy/Single point] <0.000000>: For multiple
points enter the desired arc length or change input mode.
Pulldown Menu Location:
CG-Survey > Cogo > Curves
Keyboard Command:
cg_poa
Prerequiste:
coordinate file