For questions specific to the Graphics3D command and related 3D graphics functionality.
0
votes
1answer
69 views
Projection of a set of 4D points to the 3D space
Consider the following set of points in the 4D space:
...
2
votes
1answer
99 views
How to draw tiles with different height?
I have a random matrix RandomReal[{1, 2}, {20, 20}], whose elements represent the heights of an array of tiles. The cross sections of each tile are square and ...
3
votes
1answer
52 views
How can I use Manipulate[] to click on a Graphics3D output and generate $(x,y)$ outputs on a projection plane parallel to my screen?
Say I have some Graphics3D object that I'm looking at from a top down perspective, e.g.:
...
0
votes
0answers
21 views
How do I automatically “trim” the bounding box for a Graphics3D output? [duplicate]
I noticed that, provided some Graphics3D output scaled with ImageSize, I can get rid of a lot of the empty space around the graphic by right-clicking and then selecting "Trim Bounding Box". Thinking ...
6
votes
1answer
124 views
Does it make sense to ask for the color of a Graphics3D “voxel”?
Say I generate some Graphics3D object, e.g.:
Graphics3D[{Red, Sphere[{0, 0, 0}, 1], Blue, Sphere[{1, 0, 0}, 1]}]
Does it make sense to ask for the color of a ...
1
vote
0answers
45 views
Anti-aliasing won't work when there is PlotStyle command
I've found that if there is PlotStyle command in the input, anti-aliasing will not work.
However if the Style code is ...
7
votes
2answers
82 views
How to show wireframes on imported Object / Mesh (.obj file)
I've managed to import a Wavefront (.obj) file and store it in a variable like so:
...
1
vote
1answer
119 views
No anti-aliasing on BarChart3D?
If I put AA code in BarChart3D, it won't works. Here is the code.
...
6
votes
6answers
326 views
How do I draw a hemisphere?
I want to draw a solid or partially transparent hemisphere above a partially transparent cuboid object in Graphics3D. However, I do not know how to do this s.t. only half the sphere is drawn. Here's ...
0
votes
1answer
52 views
Outputting a set of graphics 3D objects with positions defined by one array and colors by another? [duplicate]
I have a set of 2- or 3-space coordinates in an array, $(v_1,...,v_N)$, and an array of RGB color values (outputs from ImageValue[]) for each coordinate, $(c_1,...,c_N)$. How can I output a ...
9
votes
2answers
163 views
Drawing Cylindrical Segment with Graphics3D
For a visualization I need a combination of 3 Cylindrical segments to visualize the incident, reflected and refracted beam of light at a surface. I got as far as the following code.
...
7
votes
3answers
241 views
Generating a “flare” effect in Graphics3D?
I'm attempting to indicate that there is a point-source of light at some position in a Graphics3D-generated image. Is there any built-in tool to do this? My patch-work solution thus far has been to ...
11
votes
3answers
179 views
Representing a Stencil of a Finite Difference Operator with Mathematica's Graphics3D
I have the following finite difference operator:
$$
Lu_{ijk}:=
du_{ijk} +c(u_{i-1,j,k} + u_{i+1,j,k} + u_{i,j-1,k} + u_{i,j+1,k} + u_{i,j,k-1} + u_{i,j,k+1})\\
-u_{i-1,j+1,k}-u_{i-1,j-1,k} - ...
2
votes
1answer
66 views
Find points on the surface of a Graphics3D object
If I have a Graphics3D object that was generated from manipulations to PolyhedronData rather than via an explicit equation, for example the Spikey
(for which the entire code can be found here The ...
4
votes
2answers
77 views
Efficient drawing of convex polyhedron given a set of points [duplicate]
I have a set of points in the 3D space and I want to draw the bounding convex polyhedron of those points. A very naïve solution would be to draw a triangle between every three points:
...
10
votes
2answers
330 views
Graphics3D: Finding intersection of 3d objects and lines
I found these two nice links 1) intersecting graphics 2) Implementation of Balaban's Line intersection algorithm in Mathematica which works for 2d.
However, I need to find whether a ray(line) ...
2
votes
2answers
70 views
Arrow pointing upwards in a Graphics3D
I am trying to write a code for an arrow that points upwards from the center of the circle in a Graphics3D.
...
-1
votes
1answer
46 views
How can a 3DBarChart be made to be fixed size and proportions?
I have a 3DBarChart that adds bar graphs as would be required by the dataset, but as it gets wider runs off the page and can not be printed. Is there a way to fix the height & width of the ...
5
votes
3answers
160 views
Combining Image3D and Graphics3D
I want to combine an Image3D and a Graphics3D using Show. Here is the code:
...
-1
votes
0answers
138 views
Visualizing the bitcoin code? [closed]
I'm a graphic designer from Switzerland and I'm blown away by some of the graphical results that Mathematica is able to produce. However I have no clue of mathematics or coding myself. But I'm asking ...
0
votes
0answers
82 views
Determining if a point is inside or outside a 3DS (.3ds) or 3DS MAX (.max) object?
Imagine I import some 3DS (i.e. 3D studio) file (http://reference.wolfram.com/mathematica/ref/format/3DS.html) or a 3DS MAX file. How could I place this model (say, the 747.3ds file in the ...
2
votes
1answer
99 views
Including two ListLinePlots in a 3D graphic
I have two lists of data which I am plotting on two ListLinePlots. I would like to have these two plots appear perpendicular to each other on a 3D graphic. I have ...
1
vote
2answers
154 views
Using Chemical Data to make molecule graphics
I would like to take the acetone and chloroform molecules that Mathematica's chemical data provides, and plot them together. I want to show how chloroform can hydrogen bond to acetone. Right now I ...
11
votes
3answers
323 views
How to plot a 3D surface with a simple black and white style?
Mathematica has great plotting capabilities. However, sometimes what is needed is a very basic black and white plot without textures, lighting, glow and other complex features. So, here is my ...
3
votes
2answers
212 views
Plot 2D Vector function in 3D
I want to plot a 2D vector function such as $F(x,y) = (a(x,y),\,b(x,y))$ in a 3D graph so that the vectors are embedded in the xy plane. I tried to do the following:
First I defined a piecewise ...
2
votes
1answer
68 views
4
votes
1answer
82 views
OpenGl Z-Order Equivalent in Mathematica?
I am trying to draw the arrows in this picture on top of the two parallel plates. In OpenGL I would just set the 4th coordinate the z-order to be closer. Any ideas how to draw them on top in ...
-3
votes
1answer
109 views
How can you show data in a CDF Animate Graphic?
I want to show (dynamically) the curvature and torsion in a CDF to understand the quantitative measure of any points. Do you know what I have to do to show data in a ...
14
votes
4answers
526 views
Mathematica for teaching orthographic projection
Edit: All the four answers to this question are great, and if you're interested, you should take a look at all the answers. Nevertheless, belisarius' code was accepted since it was closest to what I ...
8
votes
1answer
141 views
FindClusters for 3D Pancake/Platelet Shapes
I'm looking to properly cluster a dataset of roughly 3 million data points in 3-space. The shapes form closely spaced "clusters" that resemble pancakes.
Here is a downsampled dataset:
...
4
votes
4answers
171 views
How can I fill a curve in ParametricPlot3D?
I'd like to fill a curve in a ParametricPlot3D in the same way as I might with ListPointPlot3D; i.e.,
...
1
vote
2answers
102 views
Why doesn't Translate work with PolyhedronData? [closed]
I am trying to view dodecahedrons distributed around a space, but the above code fails. The expression
...
5
votes
2answers
228 views
three-dimensional graphic objects that are not simple cuboids
I am trying to draw some graphics with Mathematica. The objects I want to draw are just a little bit more complex than a cuboid -- the difference being that the top and bottom faces are of different ...
6
votes
2answers
260 views
Convex hull of a 3D object?
I am trying to find a convex hull command for a Graphics3D object. Does it exist in Mathematica?
...
7
votes
2answers
228 views
How can I mesh a solid cylinder with triangular or tetrahedral elements
I need to plot triangular mesh on a cylinder. However the function Cylinder doesn't have a mesh option. By using ...
4
votes
4answers
151 views
How can I randomly color Graphics3D objects?
I have a set of Graphics3D primitives (here, spheres) which I would like to assign either:
(1) One of a subset of colors, e.g. {Green, Red}
(2) A random color over some RGB interval
Writing ...
8
votes
3answers
183 views
How do I remove a bounding box (i.e. set Boxed -> False) after rendering a 3D graphic?
I have an old notebook with an output from Graphics3D, however, I've lost the data behind the output and recomputing it would take days. I simply want to remove the bounding box Mathematica usually ...
5
votes
2answers
278 views
Axes Origin & Labels in 3D Plot
I'm looking for a way to have the axes at the origin in a 3D plot and to label the (x,y,z) axes in the usual way---with x near the end of the drawn portion of the x axis, y near the end of the drawn ...
1
vote
1answer
170 views
Radial Random Walk
I'm trying to generate a spherical distribution of radial random walk points in 3D space. The following code works, but the random walk lines aren't radial. Why ? Where is my mistake ?
...
4
votes
1answer
111 views
combined 3D graphics with no interface
I'd like to combine several 3D graphics, but the interface, indicated by the arrow in the figure attached between them is alway present. How to eliminate it? Thanks in advance.
Here is my example:
...
10
votes
0answers
204 views
How do I stop my joystick from rotating a 3D graphic?
I am trying to use Mathematica to illustrate mixed strategies in Game Theory. I want my students to be able to use common joysticks as controllers. What I find, however, is that in addition to doing ...
3
votes
1answer
109 views
Synchronizing manual rotations for multiple Graphics3D outputs?
Say I make a set of three Graphics3D images, here of three different cones, by evaluating:
...
2
votes
1answer
92 views
How do I add a color bar to a 3D plot?
I tried
Plot3D[Exp[-x^2 - y^2], {x, -2, 2}, {y, -2, 2},
ColorFunction -> (ColorData["TemperatureMap"][#3] &),
PlotLegends -> Automatic]
in an attempt ...
4
votes
3answers
98 views
Text Annotation Disappears in Wrapped 3D Graphics
In a 3D graphic, if I wrap a figure, for example,
...
1
vote
0answers
113 views
Plotting an array of data onto a sphere [duplicate]
See the link to plot at the bottom of this post, it is a function of the spherical coordinates theta and phi. It is generated by MatrixPlot of an Array of data. I would like to plot this onto a sphere ...
1
vote
1answer
67 views
Colors not showing in Graphics3D
The following code works, except that the colors aren't showing in the output. Wh? I probably made a trivial mistake, but I'm yet unable to find it.
...
4
votes
1answer
126 views
Remove the white margins of a Graphics3D figure
If the option Boxed is set to be False in Graphics3D, additional white margins may appear as ...
4
votes
1answer
87 views
4
votes
2answers
186 views
Transparent Cylinder with Dashed Edges only
I would like to have that kind of cylinder with Dashed edges (including the bellow inner ring):
I've been trying that:
...
7
votes
2answers
184 views
OpenSCAD like functionality with Mathematica?
I keep seeing reference to use of Mathematica as a CAD tool (for instance: http://www.makerbot.com/support/guides/design/). I'd like to use it as such if feasible, but I'm having trouble locating ...
