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 ...
2
votes
1answer
89 views
Increasing the size of numbers in a legend bar
I would like to know how you go about increasing the size of numbers which
appear in a legend to make them larger than the default (which is too small for publication purposes).
Example:
...
4
votes
1answer
437 views
Transform 3D data into 2D color map like Matlab's surf/imagesc
I have a bunch of 3D data (x, y coordinates and values) which is generated in Matlab and I need to render them in a 2D color map with certain axis ranges. Here are the Matlab code and the generated ...
4
votes
1answer
365 views
Spiral pattern and Fibonacci numbers
I'm want to generate a 2D spiral pattern like the the one shown in the following figure. I can generate the spirals one by one, but I think there ought to be a more efficient method for generating ...
4
votes
1answer
108 views
Manipulating a Graphics3D output with a large number of geometric primitives
I'm attempting to view and rotate a Graphics3D object with a very large set of geometric primitives ($\approx 10^6$ objects such as spheres or lines), and everything is functioning very slowly. Are ...
9
votes
4answers
334 views
How to draw a higher-genus surface
NB: By higher-genus surface, I mean a closed orientable surface of genus at least 2.
This question has come up before on math.SE, and even MathOverflow, but most posters suggested using either ...
2
votes
1answer
59 views
Graphing the amount of time a function takes
I know I can find out the amount of time a function takes to run like this:
In:= function1[100] //Timing
Out:= {0.043334, Null}
How can I graph this over a set ...
24
votes
3answers
433 views
How can I make points “glow”?
I have a set of points in the plane which I would like to have "glow". I would like for each point to glow individually and I would also like some increase in the intensity corresponding to an ...
7
votes
1answer
219 views
Mathematica color schemes for the colorblind
Does Mathematica have a graphics option that makes plots intelligible for people with colorblindness?
11
votes
2answers
235 views
Helio chart for canonical correlation
I'm trying to create a chart usually called "Helio chart". It's a chart type very suited for canonical correlation analysis involving several dependent and independent variables.
However, it is a ...
6
votes
2answers
258 views
Calculating a minimum bounding box for a set of 3-space coordinates / spheres
I have a set of 3-space coordinates for the atoms of a molecule (I could also transform them into spheres with radii corresponding to the atoms they represent). I would like to place this molecule ...
1
vote
1answer
80 views
Draw only the top of the boundary of a function in Plot3d
So currently I have
via combining 3 Plot3D's in a show. My question is how can I make it so that the ONLY portion of that border highlighted green, is the "curving portion" in the xy plane, rather ...
0
votes
0answers
98 views
Copy and pasted graphics are fuzzy
I have a function that creates a 2D line with filling to the axis. When I copy this graphic into word it is very fuzzy, so much so that the numbers and text are almost unreadable, not to mention the ...
2
votes
1answer
149 views
Color coding based on 4D data within a building
I am trying to create something similar to a Heatmap within a building. Suppose I have a room with dimensions, {30,40,50} as length, width, and height respectively. I have a set of data that is of ...
0
votes
1answer
96 views
ContourPlot of a complicated function
I have the function $pot_1(x,y,z)$ which is given in analytical form. So, in order to plot the contours at the primary planes $(x,y)$, $(x,z)$ and $(y,z)$, I use the following ...
1
vote
1answer
189 views
How do I draw multiple 3D shapes defined by lists of points?
I'm attempting to draw $N$ cones on a 3D object, where each cone is specified by a pair of 3D coordinates. The first coordinate is for the cone's base, the second one for the cone's apex. Here, I ...
6
votes
3answers
129 views
How can text-specific antialiasing be disabled in Rasterize?
While tinkering with the code in the Falling Matrix question, I was hoping to improve the rendering speed by making the rasterizations of the text grayscale. I changed the base color of the text to ...
8
votes
4answers
431 views
Plot a 2D vector path onto a surface
In my calculus 3 course, we're studying gradients and have a project that takes a combination of 3D Gaussian radial surfaces and a basic parametric path $r(t) = \{x(t),y(t)\}$ to see how the gradient ...
4
votes
1answer
64 views
How to prevent output truncation when importing large Graphics?
The Evaluation Preferences in Mathematica specify a maximum output size of 1048576 Bytes before truncation occurs. That makes a ...
4
votes
2answers
231 views
How do you draw credible regions/intervals on a 2D PDF?
I have some numerical data from which I generate a PDF via:
pdf = HistogramDistribution[data];
Which can then be easily visualised thus:
...
1
vote
0answers
123 views
Teaching integer addition [closed]
I'm working with math 7 students and teaching integer addition and subtraction. The "rules" are easy, but the idea in many school districts (valid I think) is to have students experiment and develop ...
5
votes
1answer
100 views
save table of plots into a single figure
I have following code:
Table[LogLogPlot[
a + 0.017*k + (-0.014*k)*Tanh[(k - 0.25)*b], {k, 0.1,
10}], {b, {0.1, 0.2, 0.3, 0.4}}, {a, {1.0, 1.1, 1.2, 1.3}}]]
I ...
8
votes
1answer
232 views
Control objects Sizing and placement in Graphicsgrid Vs Grid:
I have created a grid, and also made a list of control objects(e.g., input fields, buttons, etc.). Then, I lay the list in my grid. There is no problem. However, the final layout takes a lot of time. ...
4
votes
1answer
102 views
Why this code is considerably slower in version 9?
I have a Mathematica code for computing and plotting the density which corresponds to a given potential. The following code was written few years ago using version ...
8
votes
4answers
320 views
Showing a rectangular plot on an almost-closed sphere
I am currently teaching some students about the "point at infinity", and how it allows us to treat circles and lines as "the same", etc. I would like to kind of show this happening with a series of ...
13
votes
4answers
285 views
Is it possible to select outliers on a graph and determine the index of the outliers?
I have a large data set of experimental data for which I have determined a theoretical fit. However, for some of the experimental data I took, there was systematic error, leading to the data deviating ...
1
vote
0answers
76 views
Why does animating images overlayed with graphics primitives take much longer than animating either individually?
So I start by making a list of images with
images = Image[ArrayPlot[Import[ (* filenames *) ]]]
Then I run some complicated code that extracts the coordinates ...
3
votes
2answers
123 views
How to color lines in Epilog
I often use Epilog to label lines within graphs, and I like to coordinate the color of the labels with the color of the lines they're labeling. This is no problem. However, I'm currently working on a ...
9
votes
3answers
154 views
“Stacked” BarChart with BarOrigin $\to$ Top makes y-tick marks negative
When BarChart layout is "Stacked", setting BarOrigin -> Top makes the y-axis tick marks ...
3
votes
2answers
118 views
Extracting a single layer from a SHP file
I have an ESRI ShapeFile (SHP) that I've loaded. It has a number of layers which I can see the names of by using:
Import["file.shp", "LayerNames"]
I get ...
-5
votes
3answers
172 views
How can I draw this plot?
How can I draw a plot like this one? I want to be able to specify the x-axis, y-axis, and z-axis ticks and the number of bars in the plot.
3
votes
2answers
81 views
The same value of VertexSize for vertices in different graphs causes different vertices size
I generated some graphs. The smallest vertices in the 1st graph should be the same size as the smallest vertices in the second graph.
The smallest vertices have the same size (...
12
votes
5answers
699 views
Distance between point and line segments
How would you determine the shortest distance between a point and one or more segments?
For example, what is the shortest distance between the point and the two segments below? Clearly the point is ...
5
votes
5answers
322 views
Subdividing a polygon , equivalent fractions
I see that I was a real "doofus" here and my original question was flawed. You can't divide a polygon like you can a circle or a rectangle, except in special cases... I should have seen that right ...
3
votes
2answers
173 views
ListContourPlot interpolation screws up on concave set of data
I want to create ListContourPlots for sets of Data (from a physics simulation) given as Triplets {x, y, f(x, y)}. Certain parameter regions in the x-y-plane are ...
4
votes
1answer
84 views
BarChart FrameLabels with only partial Frame?
This test BarChart is generated by the code that follows it:
...
3
votes
1answer
223 views
Insert a 2D graph in a 3D graph
I have this question:
Suppose I have some two dimsensional graphic element, say "flower" (i.e. a picture of a flower) in a Mathematica notebook. I want to insert this figure, say at a specific ...
16
votes
2answers
382 views
Dynamically splitting Disks with Mouseover
I've recently stumbled across this site: Koalas to the Max, and the first thought that came to my mind was "I want to recreate this with Mathematica".
As a first step I tried to create a ...
9
votes
4answers
625 views
1
vote
1answer
221 views
Drawing a quadrilateral inscribed within a circle
I would like to draw a quadrilateral inscribed within a circle. How can I construct this figure, taking into account arbitrary (specified) side lengths, while still ensuring that the vertices of the ...
2
votes
1answer
107 views
How can I specify the exact colors two Polygons in plots combined with Show?
I made two Polygons with different colors. Their names are p1 and p2.
...
0
votes
0answers
85 views
DensityPlot on spherical surface? [duplicate]
I just checked this example Construct a Globe Showing All Weather Stations. It looks good, but I would like to add a density plot of the stations on the spherical surface.
This can be done with the ...
6
votes
2answers
196 views
Distorted graphics when using custom ticks and AspectRatio -> Full
I am having a problem using custom tick specifications along with AspectRatio -> Full.
The problem affects both Ticks and ...
9
votes
4answers
346 views
What is a good way to plot some difficult implicit equations?
Here are several equations, it seems that Mathematica couldn't plot them well, although I set PlotPoints>100
...
6
votes
2answers
153 views
Is there a way to programmatically set global preferences?
Can I set global preferences that are accessible via "Edit"->"Preferences" programmatically from within a notebook?
As learned from this question, turning off anti-aliasing can make a huge difference ...
1
vote
2answers
102 views
Math text is reversed using Graphics3D [duplicate]
I'm trying to display the text $y+\tau\theta$ using the following graphics directive inside a Show[] with several other graphics objects:
...
2
votes
1answer
111 views
Resetting an animation with a custom button
I have the following code, which accepts a function via an InputField, and then gradually draws that function in a Plot using ...
8
votes
2answers
209 views
Is there a “GrabHand” and “OpenHand” MouseAppearance in Mathematica?
MouseAppearance[Plot[Sin[x], {x, 0, 5}], "LinkHand"]
Unfortunately I cannot get a screen grab to show the link hand but it is a cartoon hand with a finger ...
8
votes
1answer
138 views
How can I sequentially apply different graph embeddings?
Imagine I have some graph G, and I perform a graph embedding using a command like:
G = Graph[GraphEdges, GraphLayout -> {"SpringElectricalEmbedding"}]
I then ...
8
votes
1answer
128 views
EventHandler not working within DateListPlot (?)
I have some {date, value} data:
data = Transpose[{AbsoluteTime /@ Thread[{2012, Range[12], 15}],
RandomInteger[10, 12]}]
...
4
votes
1answer
151 views
Reproducing a graphic on Jensen's inequality for the probabilistic case
I am trying to reproduce the following graph on Jensen's inequality for the probabilistic case (source: wikipedia) but with
the exponential function as Y,
the normal distribution on the X-axis and ...
