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ihatespam
Guest
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 Posted:
Fri Jan 28, 2005 6:32 am Post subject:
Determining length of point along a pline |
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I have serpentine pline representing the centerline of a walking trail. Is
there a method or routine in AutoCAD 2K2 where I can easily identify a point
along the pline to a specific distance (example: 50' of travel from the
start of the pline, etc.)? Any ideas short of exploding the pline and
adding segments up manually would be appreciated.
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Casey Roberts
Guest
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| Posted:
Fri Jan 28, 2005 7:39 am Post subject:
Re: Determining length of point along a pline |
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copy the pline and use the lengthen command
Command: LENGTHEN
Select an object or [DElta/Percent/Total/DYnamic]: TOTAL
Specify total length or [Angle] <1)>: 50'
Ta da...
Or use MEASURE... (make sure pdmode is something other than 0 to see the
results)
"ihatespam" <nospam4me@bogus.com> wrote in message
news:41f99625$1_2@newsprd01...
| Quote: | I have serpentine pline representing the centerline of a walking trail.
Is
there a method or routine in AutoCAD 2K2 where I can easily identify a
point
along the pline to a specific distance (example: 50' of travel from the
start of the pline, etc.)? Any ideas short of exploding the pline and
adding segments up manually would be appreciated.
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teiarch
Guest
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| Posted:
Fri Jan 28, 2005 7:59 am Post subject:
Re: Determining length of point along a pline |
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Draw a circle with the center at the start point and radius equal to the distance you want to go.
Draw a node at the intersection of the circle and the spline.
Draw line line from the center of the circle to the node.
Offset the line some value beyond the high point of the included arc segment of the spline.
Draw a line from MIDpoint of the first line, PERpendicular to the offset line.
Trim this line using the spline as the cutting element. Erase the offset line.
If you want to determine the circular distance between the start point and the node, draw an arc from start point through the end point of the mid length line segment to the node.
LIst the arc for the curved distance; LIst the chord (start point to node) for straight line distance.
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Tracy W. Lincoln
Guest
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| Posted:
Fri Jan 28, 2005 9:04 am Post subject:
Re: Determining length of point along a pline |
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Try MEASURE (make sure you have your Format > Point Styles setting so you
can see the the POINTS aka: an OSNAP NODE) and make sure you select the near
the end of the pliNE you want to start the measure from.
--
Tracy W. Lincoln - TLConsulting
http://TLConsulting.blogspot.com/
Consulting, Design & Training Specialist
Autodesk Discussion Group Facilitator
"ihatespam" <nospam4me@bogus.com> wrote in message
news:41f99625$1_2@newsprd01...
| Quote: | I have serpentine pline representing the centerline of a walking trail.
Is
there a method or routine in AutoCAD 2K2 where I can easily identify a
point
along the pline to a specific distance (example: 50' of travel from the
start of the pline, etc.)? Any ideas short of exploding the pline and
adding segments up manually would be appreciated.
|
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| Back to top |
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hendie
Guest
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| Posted:
Fri Jan 28, 2005 10:02 am Post subject:
Re: Determining length of point along a pline |
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if you check out the free downlods section at www.resourcecad.com there is a routine called POO (honest !) ~ Point On Object ~ this will allow you to place a point on acad objects by using either lengths, percentages of length or start, end, midpoints etc
http://www.resourcecad.com ~ for you CAD solutions |
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Markus Latz
Guest
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| Posted:
Fri Jan 28, 2005 10:02 am Post subject:
Re: Determining length of point along a pline |
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Use the MEASURE command.
There you can specify a distance, than AutoCAD creates every unit a point on
your pline or spline.
Check that your point style and point size is configured.
regards
Markus
"ihatespam" <nospam4me@bogus.com> wrote in message
news:41f99625$1_2@newsprd01...
| Quote: | I have serpentine pline representing the centerline of a walking trail.
Is
there a method or routine in AutoCAD 2K2 where I can easily identify a
point
along the pline to a specific distance (example: 50' of travel from the
start of the pline, etc.)? Any ideas short of exploding the pline and
adding segments up manually would be appreciated.
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| Back to top |
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ihatespam
Guest
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| Posted:
Fri Jan 28, 2005 11:10 pm Post subject:
Re: Determining length of point along a pline |
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The MEASURE command works great. All these years, and I never knew it
existed.
Good thing I haven't designed many circuitous walking trails. But hey, now
I'm ready for the next one. Thanks.
"Casey Roberts" <streboryesac-nospam-@hotmail.com> wrote in message
news:41f9a590$1_2@newsprd01...
| Quote: | copy the pline and use the lengthen command
Command: LENGTHEN
Select an object or [DElta/Percent/Total/DYnamic]: TOTAL
Specify total length or [Angle] <1)>: 50'
Ta da...
Or use MEASURE... (make sure pdmode is something other than 0 to see the
results)
"ihatespam" <nospam4me@bogus.com> wrote in message
news:41f99625$1_2@newsprd01...
I have serpentine pline representing the centerline of a walking trail.
Is
there a method or routine in AutoCAD 2K2 where I can easily identify a
point
along the pline to a specific distance (example: 50' of travel from the
start of the pline, etc.)? Any ideas short of exploding the pline and
adding segments up manually would be appreciated.
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| Back to top |
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ekubaskie
Guest
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| Posted:
Mon Jan 31, 2005 3:25 am Post subject:
Re: Determining length of point along a pline |
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Assuming that you don't have to do this for many points, just break the pline at the point, select the partial pline, and read the length from the properties window. A couple quick undos restores the original pline.
If you have to do this with MANY points, you really ought to be working in Land Desktop or Civil 3D, where you can make an alignment from the pline, and then query the station and offset of any point on or near the alignment. |
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ihatespam
Guest
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| Posted:
Tue Feb 01, 2005 12:42 am Post subject:
Re: Determining length of point along a pline |
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Sorry about that...the title of my original post was fairly erroneous in
persepective, though I didn't catch that until I reposted a day or so later.
What it should of said was 'finding the points for given travel distances
along a pline/spline. Sometimes what I want to say and what I actually type
are two very different things.
"ekubaskie" <nospam@address.withheld> wrote in message
news:25740187.1107123951977.JavaMail.jive@jiveforum1.autodesk.com...
| Quote: | Assuming that you don't have to do this for many points, just break the
pline at the point, select the partial pline, and read the length from the |
properties window. A couple quick undos restores the original pline.
| Quote: |
If you have to do this with MANY points, you really ought to be working in
Land Desktop or Civil 3D, where you can make an alignment from the pline, |
and then query the station and offset of any point on or near the alignment. |
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