Curve radius

[L Scholes]

I use Visio 2000 (SP2) and have Accident Reporting and Crime Scene
add-ins to create scale diagrams of traffic accident scenes. Is there
any way to automate curve length, chord and radius? Any tip that allows
the use of the "Size & Position" window would be most helpful, but any
tip at all will be appreciated!
I have used Visio since 2000 came out and am comfortable with it, i.e.,
I can use it to automate other shapes, but I dont see any where to
automate curves!!!
Thank you in advance!

 

[John Marshall, MVP]

It can be automated by creating some VBA code. Most highway and residential
curves are compound curves where the radius decreases as you enter and
increases as you leave the curve.

John... Visio MVP

Need stencils or ideas? http://www.mvps.org/visio/3rdparty.htm
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[L Scholes]

I'm not sure how to code it. The curves I'm trying to recreate are
usually skidmarks which are not predictable. When I get my field
measurements I get a beginning point and an ending point of the arc and
plot them in Visio. In the field I measure between these points for a
Chord, then measure from the Chord to the apex of the arc giving me a
Middle Ordinate; these measurements are critical for my speed
evaluations. I would like to be able to use the Chord and Middle
Ordinate measurement to plot the mark in Visio. Any ideas?
Thank you in advance for your time.

 

[John Marshall, MVP]

If you upgrade to Visio 2003, you can create a series of straight lines and
use the Operation "Fit Curve" to create a line to match.

You mentioned that you had Visio 2000 SP2. That is currently the oldest
version of Visio that qualifies for an upgrade. The next version will be
ready at the end of the year and Visio 2000 may not qualify for that
upgrade. If you feel lucky, in the past there has been a grace period in
which you could upgrade to the current version and get a free upgrade to the
new version, but there is no guarantee that that will happen again.

John... Visio MVP

Need stencils or ideas? http://www.mvps.org/visio/3rdparty.htm
Need VBA examples? http://www.mvps.org/visio/VBA.htm
Common Visio Questions http://www.mvps.org/visio/common_questions.htm
Visio Wishlist http://www.mvps.org/visio/wish_list.htm

 

[L Scholes]

How do I get the upgrade? I have never heard of that one, but I sure
would like to do it!!!

 

[John Marshall, MVP]

The upgrade should be available in most retail stores that sell software, or
you may have to go to an online retail store.

John... Visio MVP

Need stencils or ideas? http://www.mvps.org/visio/3rdparty.htm
Need VBA examples? http://www.mvps.org/visio/VBA.htm
Common Visio Questions http://www.mvps.org/visio/common_questions.htm
Visio Wishlist http://www.mvps.org/visio/wish_list.htm