| 3d-polar [message #17428] |
Wed, 27 October 1999 00:00  |
David Miller
Messages: 7
Registered: October 1999
|
Junior Member |
|
|
I have a dataset collected using a scanning lidar (laser radar) looking up
from the ground. The scan is conical. The data is in a 2-D array (x-time,
y-range) and I want to 'overlay' the data on a 3-D cone to show how the data
is in reality.
Any suggestions on how to do this (using IDL of course)?
Thanks,
Dave
|
|
|
|
| Re: 3d-polar [message #17570 is a reply to message #17428] |
Thu, 28 October 1999 00:00  |
David Miller
Messages: 7
Registered: October 1999
|
Junior Member |
|
|
Any hints on how to set up the 3-D cone polygon? Don't I need vertices in
order to overlay an image?
Thanks,
Dave
David Fanning <davidf@dfanning.com> wrote in message
news:MPG.1281cb243322e5c7989920@news.frii.com...
> David Miller (millerdo@erols.com) writes:
>
>> I have a dataset collected using a scanning lidar (laser radar) looking
up
>> from the ground. The scan is conical. The data is in a 2-D array
(x-time,
>> y-range) and I want to 'overlay' the data on a 3-D cone to show how the
data
>> is in reality.
>>
>> Any suggestions on how to do this (using IDL of course)?
>
> I think I would do this in object graphics by creating
> the 3D cone as a polygon object. You could easily
> (one command) drape the 2D array onto the polygon
> object as a texture map. With object graphics you
> will have the added capability of rotating the
> object interactively in 3D space.
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting
> Phone: 970-221-0438 E-Mail: davidf@dfanning.com
> Coyote's Guide to IDL Programming: http://www.dfanning.com/
> Toll-Free IDL Book Orders: 1-888-461-0155
|
|
|
|
| Re: 3d-polar [message #17572 is a reply to message #17428] |
Thu, 28 October 1999 00:00 |
ronn
Messages: 123
Registered: April 1999
|
Senior Member |
|
|
In article <MPG.1281cb243322e5c7989920@news.frii.com>,
davidf@dfanning.com (David Fanning) wrote:
> David Miller (millerdo@erols.com) writes:
>
>> I have a dataset collected using a scanning lidar (laser radar)
looking up
>> from the ground. The scan is conical. The data is in a 2-D array
(x-time,
>> y-range) and I want to 'overlay' the data on a 3-D cone to show how
the data
>> is in reality.
>>
>> Any suggestions on how to do this (using IDL of course)?
>
> I think I would do this in object graphics by creating
> the 3D cone as a polygon object. You could easily
> (one command) drape the 2D array onto the polygon
> object as a texture map. With object graphics you
> will have the added capability of rotating the
> object interactively in 3D space.
>
If you want an example of how to do this go to my web site at
http://www.rlkling.com/freeware/objects.htm
and download the meshObjectDemo zip file. All the code you need is
there, and it is even commented!
-Ronn
--
Ronn Kling
Ronn Kling Consulting
www.rlkling.com
Sent via Deja.com http://www.deja.com/
Before you buy.
|
|
|
|
| Re: 3d-polar [message #17573 is a reply to message #17428] |
Thu, 28 October 1999 00:00 |
davidf
Messages: 2866
Registered: September 1996
|
Senior Member |
|
|
David Miller (millerdo@erols.com) writes:
> I have a dataset collected using a scanning lidar (laser radar) looking up
> from the ground. The scan is conical. The data is in a 2-D array (x-time,
> y-range) and I want to 'overlay' the data on a 3-D cone to show how the data
> is in reality.
>
> Any suggestions on how to do this (using IDL of course)?
I think I would do this in object graphics by creating
the 3D cone as a polygon object. You could easily
(one command) drape the 2D array onto the polygon
object as a texture map. With object graphics you
will have the added capability of rotating the
object interactively in 3D space.
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting
Phone: 970-221-0438 E-Mail: davidf@dfanning.com
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Toll-Free IDL Book Orders: 1-888-461-0155
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
