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Re: draw spheres in 3D space [message #76499 is a reply to message #76498]

Mon, 06 June 2011 12:21

Michael Galloy
Messages: 1114
Registered: April 2006

Senior Member

On 6/6/11 1:14 PM, Junum wrote:
> On Jun 6, 2:03 pm, Paulo Penteado<pp.pente...@gmail.com> wrote:
>> On Jun 6, 3:53 pm, Junum<junshi...@gmail.com> wrote:
>>
>>
>>
>>
>>
>>> On Jun 6, 1:50 pm, Junum<junshi...@gmail.com> wrote:
>>
>>>> Hello,
>>
>>>> I wan to know how to draw spheres in 3D space with xyz axes.
>>>> For example, I have 7 spheres with radius of 1 and its center is at
>>>> (0,0,0)
>>>> (2,0,0)
>>>> (-2,0,0)
>>>> (0,2,0)
>>>> (0,-2,0)
>>>> (0,0,2)
>>>> (0,0,-1).
>>>> Since I don't have idea for 3D drawing, it is hard to start.
>>>> Could you let me know any clue, help, suggestion?
>>>> Thank you very much.
>>
>>>> Sincerely,
>>>> Jun
>>
>>> There was a typo.
>>> A center of the last sphere should be (0,0,-2).
>>
>>> Jun
>>
>> xyz=[[0,0,0],[2,0,0],[-2,0,0],[0,2,0],[0,-2,0],[0,0,2],[0,0, -2]]
>> p=plot3d(xyz[0,*],xyz[1,*],xyz[2,*],sym_object=orb(),/
>> undocumented,linestyle='none')
>
> Thank you for suggestion, but I got error message,
>
> IDL> xyz=[[0,0,0],[2,0,0],[-2,0,0],[0,2,0],[0,-2,0],[0,0,2],[0,0, -2]]
> IDL> p=plot3d(xyz[0,*],xyz[1,*],xyz[2,*],sym_object=orb(),/
> undocumented,linestyle='none')
>
> p=plot3d(xyz[0,*],xyz[1,*],xyz[2,*],sym_object=orb(),/
> undocumented,linestyle='none')
> ^
> % Syntax error.
>
> I am using IDL 7.0.

This should work on older versions of IDL:

model = obj_new('IDLgrModel')
model->add, obj_new('orb', pos=[ 0, 0, 0], radius=1., color=[255, 215, 0])
model->add, obj_new('orb', pos=[ 2, 0, 0], radius=1., color=[255, 215, 0])
model->add, obj_new('orb', pos=[-2, 0, 0], radius=1., color=[255, 215, 0])
model->add, obj_new('orb', pos=[ 0, 2, 0], radius=1., color=[255, 215, 0])
model->add, obj_new('orb', pos=[ 0,-2, 0], radius=1., color=[255, 215, 0])
model->add, obj_new('orb', pos=[ 0, 0, 2], radius=1., color=[255, 215, 0])
model->add, obj_new('orb', pos=[ 0, 0,-2], radius=1., color=[255, 215, 0])

xobjview, model

Mike
--
Michael Galloy
www.michaelgalloy.com
Modern IDL, A Guide to Learning IDL: http://modernidl.idldev.com
Research Mathematician
Tech-X Corporation

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[Message index]

		Re: draw spheres in 3D space By: Junum on Mon, 06 June 2011 21:26
		Re: draw spheres in 3D space By: penteado on Mon, 06 June 2011 16:15
		Re: draw spheres in 3D space By: Junum on Mon, 06 June 2011 12:40
		Re: draw spheres in 3D space By: Junum on Mon, 06 June 2011 12:31
		Re: draw spheres in 3D space By: penteado on Mon, 06 June 2011 12:26
		Re: draw spheres in 3D space By: Michael Galloy on Mon, 06 June 2011 12:21
		Re: draw spheres in 3D space By: David Fanning on Mon, 06 June 2011 12:19
		Re: draw spheres in 3D space By: Junum on Mon, 06 June 2011 12:14
		Re: draw spheres in 3D space By: penteado on Mon, 06 June 2011 12:03
		Re: draw spheres in 3D space By: Junum on Mon, 06 June 2011 11:53

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