Questions tagged [projection]
The projection tag has no usage guidance.
27
questions
52
votes
4
answers
5k
views
Mollweide maps in Mathematica
Context
In my field of research, many people use the following package: healpix (for Hierarchical Equal Area isoLatitude Pixelization)
which has been ported to a few different languages (F90, C,C++, ...
21
votes
2
answers
570
views
Why does the GeoGraphics Frame show different Latitude than GeoPosition?
The map looks right, but the Latitude in the Frame looks wrong.
Am I making a mistake or is this a bug?
15
votes
2
answers
3k
views
Mapping StreamPlot onto spherical surfaces
Suppose I have some vector field equations $(f(\theta,\phi), g(\theta,\phi))$. The StreamPlot can be created easily in 2D, but I would like to visualize the stream ...
14
votes
2
answers
5k
views
2D projection of a 3D surface
The following post (Projection of a 3d curve to 2d) explain how to project a 3D curve on 2d.
Now there is a command which permit the Porjection of ImplicitRegion. But I have a function ...
-1
votes
2
answers
696
views
Projectile motion with air friction
I need to find the x and y components of a projectile's position, its velocity at any evaluation point, time of flight, range, and maximum height. I have already made the code for a projectile ...
24
votes
2
answers
5k
views
How do I map a Mollweide projection onto a sphere?
I have this Mollweide projection of the Earth circa 600 million years ago (http://jan.ucc.nau.edu/~rcb7/370moll.jpg).(1)
I want to map this onto a sphere. My results have big black splotches in the ...
19
votes
2
answers
2k
views
Using map projections with astronomical data
I noticed that all important "Geoprojections" are available in projections for a spherical reference models: GeoProjectionData function;
1 - I am trying using the sinusoidal projection for ...
17
votes
1
answer
498
views
GeoGraphics: problem with GeoPosition in shifted projections
Bug introduced in 10.0.0 and fixed in 11.0.0
A remark about the answer:
My work around is only nice for simple cases with points. More general should include proper polygons splitting on antimeridian....
14
votes
1
answer
906
views
GeoProjection for astronomical data - wrong ticks
Here is an excellent answer to what I wanted to do, and it works like a charm. Unfortunately, when I want to change it a bit, it fails. For setting the stage, here is the datafile, and this is my ...
7
votes
1
answer
1k
views
Converting 3D graphics to 2D for better export
I noticed that exporting a Graphics3D object into a vector graphics format, like SVG or PDF, produces a rasterized version of the graphics, while 2D objects are ...
5
votes
1
answer
3k
views
Projection of a 3d curve to 2d
This question is related to:
How to obtain the coordinates of the intersection line of two surfaces?
Read the link first.
First, I have tried ...
19
votes
1
answer
3k
views
How to map an image to get an illusion of 3D
I would like to distort or map a given JPEG so that it looks 3D when viewed from certain angle, as in this YouTube video. The most interesting part of the video:
I usually use conformal mapping (a ...
18
votes
4
answers
3k
views
Isometric perspective for Graphics3D
Is it possible to render Graphics3D in an isometric projection? I know that the ViewPoint option can be used for orthogonal ...
10
votes
1
answer
280
views
Testing visibility and projecting in Graphics3D
I'm trying to create a version of Alberti's window, a figure that represents the projection of a three-dimensional figure onto a two-dimensional plane.
Here are my steps:
1) Create the three-...
8
votes
1
answer
2k
views
Exporting 2D projection of 3D graph in SVG form
For 3D, Mathematica does not export SVG as vector graphics, it just puts an encoded png image inside svg file. Same happens if one exports as .eps or .pdf
This question does not address the problem ...
6
votes
2
answers
2k
views
Projection of triangles onto a sphere
I am trying to find the solid angle taken up by a large set of triangles around a central point. I have normalized the vertices of the triangles to a unit sphere around the central point, But the ...
4
votes
1
answer
905
views
Projecting 3D Mesh Region onto 2D Plane
For vizualization purposes in a beamer presentation I would like to project a 3D MeshRegion like ConvexHullMesh[RandomReal[{-1, 1}, {50, 3}]] onto a 2D plane. How ...
0
votes
2
answers
3k
views
Projectile motion in Mathematica using Euler's method [duplicate]
I need to write the equations of a ball in projectile motion (ignoring air friction) with an initial velocity of 40 m/s at an angle of 40° with respect to the horizontal. Specifically, I need to write:...
35
votes
2
answers
3k
views
Peirce's quincuncial projection
The Peirce quincuncial projection is the cartographic projection of a sphere onto a square.
In short, I would like to see it implemented in Mathematica.
Here is my code:
...
19
votes
2
answers
971
views
Project map to a particular shape
I want to project a map to a particular shape, like a circle or ellipse. For example, let's imagine we want to project a map of the continental United states so that its outline is that of a circle. ...
8
votes
1
answer
631
views
Projections of a three-dimensional surface
Here comes some sample data
...
8
votes
1
answer
324
views
Creating a certain image (3D shadows, highlighted intersections)
I would like to learn how to code within Mathematica the following picture:
I tried using
...
7
votes
3
answers
552
views
Riemann-Spherical Projection of Network onto the $\mathbb{R}^2$-Plane
I'm trying to find a way to plot the graph
...
6
votes
4
answers
672
views
How to plot a color consistently in Plot3D with 2D projection curve?
I use this code to draw three-dimensional surfaces and show the curves at the bottom. But does not give me the result required:
...
6
votes
2
answers
383
views
What is simpler way to find projection of a point on a plane?
This is my code to find the coordinate of projection of the point pA = {2, 3, 5} on the plane -284 + 14 x + 2 y + 5 z == 0.
<...
4
votes
1
answer
1k
views
2D projection of a 3D plot [duplicate]
how we can obtain a 2D projection of 3D plot. I would to have a plot like this :
PS: the plot is a publication paper.
0
votes
2
answers
102
views
Projections of set on coordinate planes
I want to take the projection of this ellipsoid into x-y, y-z and z-x plane. How can I do it?
...