Questions on the construction of 2D and 3D graphics through the direct use of primitives, directives, and functions. Include the graphics3d tag for questions specifically on 3D graphics. This tag is not to be used for basic questions on visualizing functions and lists using the various flavors of ...

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0
votes
0answers
48 views

How to extract data points from an image of a log log plot? [duplicate]

I have a picture of a log-log plot, taken from a paper and I want to extract the data points so I will be able to plot them again along with results of my own solution. I would appreciate your help. ...
2
votes
1answer
63 views

Color lines by angle

I would like to color some lines according to the following color function: ...
6
votes
1answer
114 views

Ghost trails with Animate?

What are some approaches to integrate Ghost trails methods with Animate, which otherwise seem more suited for exporting individual frames? For example, given this rootPlot function, how can trails ...
0
votes
2answers
39 views

Parametric Plots [continuous and discrete]: --showing parameter increase for multiple values of another parameter

In my problem, I am effectively plotting a parametric function that depends also on an outside parameter, e.g., the real/imaginary parts of ...
12
votes
3answers
892 views

Finding a function that fits the shape of an image

How can I find a function that fits the given shape of an image? Or instead extract a point set from the shape and then find an interpolating function fits the shape. An example image is attached.
0
votes
0answers
29 views

Changing the style of the Error Bars

I'm trying to get to change the length of the line at the top and the bottom of the error bars, but I have no idea how to do it. Can anyone help? Thanks!
4
votes
2answers
113 views

How to generate mesh and calculate volume of 3d object?

I saw a couple of posts dicretizing the graphic and generate DelaunayMesh to get volume of 3D object. The issue I'm having is that DelaunayMesh creates a bigger solid covering the original one, ...
0
votes
0answers
59 views

Dynamically update a graphic object in Mathematica

I was trying to simulate a bouncing ball (with no gravity) in a unit box and I managed to come up with a solution: ...
4
votes
1answer
124 views

VertexRenderingFunction (or EdgeRenderingFunction) with movable nodes?

In GraphPlot, I'd like to use VertexRenderingFunction (VRF) and have the resulting object behave the same way under dragging verticies as it does when I do not use VRF. The same issue occurs for ...
0
votes
1answer
41 views

EdgeRenderingFunction For 2 Vertices in a Loop

Assume there is a set of rules: set = {"A" -> "B", "B" -> "A", "B" -> "C", "C" -> "D", "D" -> "A", "C" -> "C"}; which we want to graph using ...
-3
votes
3answers
110 views

How can I plot a polygon with n sides inscribed in a circle and show the area?

I am doing some work on Archimedes and want to show what the area of a regular n-sided polygon is within a circle. My professor from two years ago was able to show it with an adjustable slider that ...
1
vote
1answer
46 views

ListPlot and AspectRatio

Here is a simple scenario ...
0
votes
1answer
73 views

Drawing an dodecahedron with vertexes at given coordinates

I want to draw an (edit)dodecahedron with the vertex in the following coordinates: ...
0
votes
1answer
58 views
2
votes
2answers
80 views

How to change the font color and size of tick labels by default

I've read Mike Honeychurch's answer here, and while it tells me how to change the font size on all of my plots, that size change affects (I think) all text on the plot. I would like to be able to make ...
13
votes
5answers
3k views

3D surface that looks like a virus

I have been recently using Mathematica for composing animations that are part of the supplementary information of my papers. I am currently trying to build an animation that involves a viral ...
0
votes
0answers
53 views

How to add a Bar Legend to a density plot over the surface of a sphere?

I have a function with variables (theta,phi) the spherical coordinates. I want to represent it as a density plot over the surface of a sphere. following an answer to a previous question Density ...
11
votes
4answers
406 views

Drawing a Gradient Between Two Circular Arcs

Suppose I wanted to use Mathematica graphics primitives to create a gradient of colors between two circular arcs. It's easy enough to make an area between two circles a solid color, but what if I ...
2
votes
2answers
116 views

A plot with labeled points in one plotting command?

For my work, I am examining the values of a complex function as I vary the input according to a real parameter, and I want to both give the general plot and the plot of specific points, with labels ...
4
votes
3answers
208 views

Problem about an ant walking up a hill

An ant is walking up a hill given by $f(x)$. At what point can it see a blade of grass. I've been working on this problem with Mathematica and by hand. Help with either would be fantastic. The ...
6
votes
1answer
140 views

How to display MeshRegion without vertices

I'm writing a library for handling very large and complicated (boundary) mesh regions on the order of ~150,000 vertices, ~450,000 edges, and ~300,000 triangles. The regions themselves are the cortical ...
1
vote
1answer
66 views

Adjusting contrast of a color scale with ListDensityPlot

I am using ListDensityPlot to plot data of the form {{x1,y1,z1},{x2,y2,z2}, …}. It results in the plot shown below. But I'd like to adjust the color scale contrast to better show the variations in ...
1
vote
2answers
49 views

combine two ParametricPlot3D plots

I have the following parametric equations ...
1
vote
1answer
68 views

LayeredGraphPlot: how to specify edge endpoints?

What directive within the LayeredGraphPlot command specifies where the edges attach to vertices? For example, instead of the left output below, I'd like to have the right one. ...
7
votes
2answers
153 views

How to make Inset graphics maintain relative sizes when combined

I am learning a little about Inset, but after trying all options, I can't get this to work. I need to inset separately made Graphics2D objects, into one main ...
0
votes
0answers
26 views

How do you position a graphic to a specific set of coordinates?

I'm using the Show function to call a bunch of graphics. I just need to know how to position a few of these graphics (something that sets the coordinates/locations of the graphics I need positioned). ...
0
votes
0answers
65 views

2d perspective projection of a sphere

I am looking for improved quality of 3d plots. I don't want to keep the object in Mathematica notebook - just export it to a .pdf file. Because it will be just one "side" of the plot I was thinking ...
4
votes
2answers
147 views

Why can't a Plot be rendered by Graphics if it's a member of a list?

I grabbed the code to render a gear from a Mathematica Demo, but I'm having difficulty reproducing the way it's to be used: ...
3
votes
0answers
38 views

Strange extrapolation in ListContourPlot?

I have some Table of {x,y,z} values (energy as a function of radial and azimuthal frequencies in a galaxy if you care to know): ...
5
votes
4answers
688 views

Creating a realistic, photo-like 3D effect from an image or document

Suppose I have an image or a document, provided in a high-quality PDF file. You can open and view it in a PDF viewer, but then it has a kind of static look: it's not something tangible, it's just an ...
0
votes
0answers
33 views

ListDensityPlot seems to break down for large arrays

(Using Mathematica 10) When using ListDensityPlot to plot 40000 + data points, the produced plot seems to be blurred/incorrect for points occurring later in the list. For instance, in the following ...
0
votes
0answers
31 views

ColorFunction in GeoRegionValuePlot

I don't understand ColorFunctions so any general pointers will be greatly appreciated. My specific question is the following. I want to animate a GeoRegionValuePlot. In the toy case below I have two ...
3
votes
3answers
339 views

How to create a Disk with smoothly changing coloring?

I want to have a disk. But this disk shouldn't have a fixed color; instead, I'd like it's color to fade smoothly. Until now, I came up with two ideas how to achieve this. Idea #1: ...
10
votes
0answers
88 views

Incorrect use of Scaled causes crash

Bug introduced in 8.0 and persisting through 10.0.2 or later While playing with Scaled, I made a syntax error which caused a crash instead of an error message ...
3
votes
1answer
132 views

Keeping Font Relative Size to Object/Graphics/Plot Object upon Resize

I want to keep the text generated within a graph/plot to remain the same relative to an element (a disk of size 0.2) of the image upon resize, not the image itself, while maintaining the original ...
0
votes
1answer
31 views

Histogram 3D: use different bin width in two directions

I'm trying to plot an histogram of a set of data, I would like to use a bin of different width in x and y direction. I've tried using the following two codes: ...
1
vote
1answer
43 views

LineScaledCoordinate problem for exact coordinates

Edit: Confirmed bug. CASE:2326540. Solution: Wait and use N meanwhile. I've faced this problem writing an answer for ...
9
votes
4answers
573 views

Animate point go round a triangle

How can I animate a point moving on triangle sides? I can generate traingle and point but I have no idea how to define point movement. I'm guessing that I have to use sin and cos in coordinates but I ...
2
votes
1answer
77 views

How do you plot polygons with GeoRegionValuePlot?

How do you plot polygons in GeoRegionValuePlots? I'd like to reproduce what the call (2) (below) does with something like the call to (4). As you can see using GeoDisk(s) (3) works but the call (4) ...
2
votes
1answer
45 views

Epilog does not work as expected with Show [duplicate]

I was trying to answer this question (here) and I found that I can't use Epilog with Show. consider this Example: ...
1
vote
0answers
52 views

Version incompability Mathematica 10 CDF Player 9

I have aleady looked at these two questions: Is there a CDF Player for Mathematica 10? and Problem with NDSolve in Mathematica 9 / 10. My problem is as follows. I am simluating neurons, which ...
0
votes
0answers
28 views

ErrorBarFunction styles [duplicate]

I am having trouble making sense of the help I have found for the ErrorBarFunction command. I am looking for basic instructions on how to change the width, style, and color of my error bars. ...
0
votes
1answer
53 views

Why does `Table` returns values but `Plot` doesn't plot them?

The Table function works fine and return a nice list of values ...
2
votes
1answer
177 views

Drawing all lines between a set of points

Given that I have the array of points, ...
-1
votes
1answer
91 views

Finding the pixel positions for the straight line joining two points [duplicate]

Please help me solve the given problem. Find the pixel positions for the straight line joining P1 (10, 20) and P2 (18, 25)
4
votes
3answers
356 views

How can I make an linear breakdown chart similar to those seen on iCloud? [duplicate]

How can I make a interval breakdown chart like this: Update: I checked BarChart and Gauge they do not have this capacity.
2
votes
3answers
190 views

Using DiscretePlot to graph the Riemann sum of a parabola

I want to graph the Riemann sum (upper sum) of $y=x^2$ with $1\leq x\leq 4$ using 6 rectangles. I want the rectangles to be green. On the Wolfram Mathworld website, I can render exactly what I want ...
1
vote
0answers
49 views

cut and project tilings — Amman Beenker tilings

A certain research paper gives a recipe for building Amman-Beenker tilings as a special type of cut-and-project algorithm. The result is usually a pleasant kind of aperiodic tiling shape. The ...
0
votes
2answers
61 views

How to create a custom filling with ListPlot

We have the following simple example ...