Questions tagged [projection]
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87 questions
1 vote
1 answer
204 views
Delimitate non-trivial 3D region from inequalities and project in different planes
I am trying to get 2D projections (onto the xy-, the xz- and the yz-planes) of a highly non-trivial 3D region delimited by 5 complicated inequalities on $(x,y,z)$. It is not possible to intersect the ...
- 71
0 votes
0 answers
122 views
Given six points in P^3 with no four coplanar, how do you compute the unique twisted cubic passing through them
A twisted cubic has parametrization $A\pmatrix{1\\t\\t^2\\t^3}$ for a nonsingular 4×4 matrix $A$ https://en.wikipedia.org/wiki/Twisted_cubic: Given six points in P3 with no four coplanar, there is a ...
- 141
1 vote
1 answer
191 views
2D Projection of a 3D Region via Variable Change (Direct Plotting Fails)
The solutions for plotting the 2D projections of a 3D region defined by ImplicitRegion is here. However, the 3D region of my interest fails to be plotted using <...
- 137
1 vote
1 answer
204 views
Projection a image onto a 3d plot [duplicate]
The follow example created by software grasshopper3d, I cann't reproduce it using ColorFunction or Image3DProjection or other way. Limited to my ability, I can only provide very little useful ...
- 457
1 vote
0 answers
111 views
How to plot (2D) the projection of two planes in a 3D graph?
I have a 3D data set that I have represented in a graph. Subsequently, I have defined two planes that intersect the obtained figure at x and y, intersecting the data with a minimum value of z. I would ...
- 87
7 votes
1 answer
281 views
GeoProjection - Spilhaus Projection of 1942 or Adam Square II
How can I make a GeoProjection like this? The best I could get was: ...
- 5,094
4 votes
0 answers
102 views
Find perspective projection matrix under constraints
I have taken a photo (with a rectilinear lens) of a house's outside wall that sits on top a roof, from which I wish to take measurements from. However, to do so I would need to correct the perspective ...
- 223
3 votes
2 answers
273 views
How to draw a curve projection?
I want to draw the following projection picture for the cuspidal cubic curve in Mathematica. Does anybody know how to do this?
- 33
6 votes
2 answers
581 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. <...
- 4,949
5 votes
0 answers
127 views
Interpreting the coordinates in a shapefile
I am trying to interpret the coordinates in the shapefile downloadable from here (Dataset 1). We can extract coordinates like so: ...
- 239k
6 votes
3 answers
577 views
Projecting the stationary points of a function below its 3D Plot
I have the following Mathematica code: ...
- 3,028
0 votes
0 answers
134 views
How to project point in Graphics3D to the plane of the screen?
The code bellow depicts two black points {0,0,0} and {2,1,-1/2}. Projection of the point ...
- 32.6k
9 votes
2 answers
818 views
How can I draw projection?
I am trying to draw this figure. I tried Graphics3D[{Polygon[{{-3, -3, -2}, {-3, 3, -2}, {3, 3, -2}, {3, -3, -2}}]}, Boxed -> False]
- 1,461
1 vote
0 answers
115 views
Oblique perspective changes PlotRange of Plot3D
I am currently trying to adapt the example of Mathematica's documentation for ViewMatrix to Plot3D. This should implement an oblique/cavalier perspective for the 3d ...
- 131
1 vote
1 answer
123 views
Combining ReliefPlots with GeoGraphics/Converting ReliefPlots into GeoGraphics
I want to use .DEM files with GeoGraphics[]. For example, adding labels, or changing projections. In my attempt, I import the example data from Wolfram. ...
- 5,094