Questions on creating visualizations from functions or data using high-level constructors such as Plot, ListPlot, Histogram, etc.

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5
votes
0answers
137 views

Strange artifacts on graphics saved as PDF [closed]

I have a problem when plotting 3D graphs. Plotting any graph with the default settings using Plot3D, e.g. ...
1
vote
0answers
248 views

Draw sample functions from Gaussian Process prior [closed]

Previously, I have written implementation codes of Gaussian Process regression in Python and Matlab. However, for better interaction and visualisation, I am currently working on implementation in ...
2
votes
1answer
254 views

Stability Boundaries via Routh-Hurwitz Criterion

I'm attempting to determine the stability boundaries of a 2nd order system via Routh-Hurwitz stability criterion. That is to say, I need to compute when a polynomial, which is in terms of variables ...
11
votes
1answer
184 views

Why does Plot try symbolic values?

I have the following code: Test[a_] := (Print[a]; a*2) Plot[Test[a], {a, 0, 10}, PlotPoints -> 5, MaxRecursion -> 0] This should plot ...
17
votes
0answers
298 views

RegionPlot returning a number

Bug introduced in 10.0 and persisting through 10.4 or later I had updated my mathematica to version 10 few days ago. And I had been shocked by the following fact: ...
5
votes
2answers
626 views

How to make a 3D plot of $(x^2+y^2-1)^2+(y^2+z^2-1)^2+(x^2+z^2-1)^2=0$ [closed]

How can I make a 3D plot of $$(x^2+y^2-1)^2+(y^2+z^2-1)^2+(x^2+z^2-1)^2=0$$ Does the above equation describes the same region as $$x^2+y^2\le 1\wedge y^2+z^2\le 1\wedge x^2+z^2\le 1$$
12
votes
4answers
473 views

How to make a ArrayPlot/MatrixPlot in polar coordinates?

in fact, I want to plot a image like: Fig1 The picture above is from a paper Zhou K.-J. et al. 2014 about ion up-flow of ionosphere. In MATLAB, there is a specialized function ...
1
vote
1answer
127 views

Different Order of Magnitude on Distinct Interval Plot Axes

I have a function as defined below: y[x_] := 9*10^-9*(Exp[x/(2*23*10^-3)] - 1) I am trying to plot this function for the range ...
0
votes
1answer
56 views

Some problems about ListPlot3D, plot 6 faces of a 3D region [duplicate]

I get the data of six faces of a 3D region. ...
1
vote
1answer
135 views

Plot roots of polynomial system of equations in 3 variables

I have the two equations $x^2 + 2y^2 + z^2 = 1$ and $xz -y^2 = 0$ I want to plot the roots in 3D. i.e the coordinates $x,y$ znd $z$
1
vote
1answer
148 views

How to change the radius markers and number of concentric circles in a polar plot?

I'm using PolarPlot to plot a function in [0, 1] in a log scale plot, capped at -40 dB, as in the following example: ...
0
votes
1answer
69 views

How do I apply a conditional append rule to plot randomly chosen points?

I'm working on an attempt at forming a sort of "Mandelbrot" set using Newton's method and randomly chosen points. Effectively I need to define a loop for Newton's method to determine whether my points ...
2
votes
2answers
268 views

random discrete data 3D plot

I get the random discrete data as follows ...
3
votes
1answer
172 views

Right-aligning variable-length rotated tick labels

I have a list of data where each point should have a label. I would like the labels to be below the plot, where tick labels usually are. This is what I have so far: ...
0
votes
1answer
86 views

Dashed 3D plot: dashes run together

When I use the Dashed option in my 3D parametric plot, the dashing looks very muddy and the dashes are running together. For example, I plot the below code, right ...
3
votes
2answers
128 views

Plotting solutions of systems in complex plane

I'm interested in plotting solutions of systems of polynomials in the complex plane, in the following way. Let $f_1,\ldots f_s$ be complex polynomials in variables $x_1,\ldots x_n$. I know how to ...
2
votes
2answers
162 views

Make a colored ListPlot

Basically I have a set of 3D points, such as {3,4,3} or {4,1,4}. Instead of plotting the points in a 3D space, I want to plot the x,y coordinates of the points on the 2D plane and use the z coordinate ...
2
votes
2answers
194 views
0
votes
1answer
148 views

Improve appearance of ListPointPlot3D with respect to Plot3D

I solve a PDE of which solution is physically a probability density $p$. Due to the algorithm the result is a $n\times m$-matrix which will be plotted by ...
0
votes
0answers
55 views

Plotting a 4dimensional spherical function In mathematica [duplicate]

Im trying to plot the results of the schroedinger equation for hydrogen in mathematica this is the function I defined: ...
-1
votes
1answer
314 views

Plot a function of multiple variables, with all but one are fixed

I have a function of multiple variables that I want to plot. The function is a bit complicated as this ...
1
vote
2answers
194 views

How can I project a Torus along the x-axis?

Making a Torus seems simple enough, but how do I project it along the x-axis? For example, I want to rotate this: And make it look like this: Thanks for who can help!
0
votes
1answer
329 views

Plotting curves with different filling styles and gridlines? [duplicate]

Here's a plot of some lines with different styles of filling and one gridline displayed: ...
2
votes
3answers
210 views

Tooltip pointer in ParametricPlots

ParametricPlot[{ Cos[u]^v , u}, {v, 0, 1}, {u, 0, Pi/2 }, Mesh -> {5, 5}] ParametricPlot[Tootip[{ Cos[u]^v , u}, {v, 0, 1}], {u, 0, Pi/2 }] How to introduce ...
3
votes
1answer
266 views

ContourLabels issues

The ContourPlot generated by ...
10
votes
1answer
244 views

Behavior of TimelinePlot with multiple datasets of associations

Bug introduced in 10.1 and fixed in 10.3 The following TimelinePlot behaves as I would expect: ...
0
votes
1answer
139 views
1
vote
0answers
75 views

How to plot three related differential equations in Mathematica? [closed]

Eq1: $ \frac{1}{3\phi}=\left[\frac{x}{x+1}\frac{d^{2}}{dx^{2}}+\frac{2x+1}{(x+1)^{2}}\frac{d}{dx}\right]{\phi^{2}} $ Eq2: $ ...
6
votes
1answer
264 views

How can I subtract one surface from another?

I have one surface for which I have an analytical solution, and another represented by a list of 3D points. My question is: how can I plot the part of one that lies outside the other? The first ...
3
votes
1answer
171 views

White Lines in Contour Plot and 3D Plot

This is a follow up question to the original question here (has a solution). I am plotting another different total potentials and for this particular case the repulsive potential is a rectangle (open ...
1
vote
3answers
160 views

Plotting Intersecting Circles On A 2-D Plane

I am new to Mathematica and I would like to plot a number of circles all onto the same graph. I would like to visually observe which circles intersect each other. One constraint on all the circles is ...
-2
votes
1answer
64 views

Plot of a R -> R^2 fuction [closed]

I have an algorithm that when you insert the parameter B, the function gives a solution {x,y}. How can I plot that? I tried ...
6
votes
1answer
154 views

StreamPlot slow in version 10

In version, 10 StreamPlot seems to calculate many more points along each streamline than necessary, compared to version 7. For example, from Mathematica ...
0
votes
1answer
164 views

How can I create a phase plane? [duplicate]

I want to make a phase plane for an equation system. I want it to look something like a Mu-Space in Stat-Mech. Basically I want it to show the same system with various different initial condition ...
6
votes
2answers
289 views

Labels strangely rendered in PDF

I'm new to Mathematica so I apologize if this is obvious to answer. Anyway, using the following code (most of it is extraneous, to make the plot look the way I want) I plotted the Morse potential, ...
0
votes
1answer
159 views

Plotting with arbitrary units

I would like to plot, say, Sin[x/a] with multiples "a" showing on the x axis as units. How can I do that ? I have tried setting the plot limits e.g. {x, -2a, 2a}. I cannot plot said function even ...
1
vote
2answers
138 views

Label point on plot with image instead of text [closed]

I can use this code to label my points with text. ...
2
votes
2answers
161 views

Filling between more than two boundaries

Here is a simple example of what I am trying to do; fill the area described by the three inequalities: $$ y \le 11 + x \label{1} \tag{1}$$ $$ y \le 27 - x \tag{2}$$ $$ y \le ...
4
votes
1answer
138 views

How to use Epilog with Tradingchart

I am making a Tradingchart with data returned from Financialdata. I find I cannot add a line to the chart by giving the option ...
1
vote
2answers
62 views

Coordinates of MeshPoints

The output of a set of differential equations solved with NDSolve produces a series of curves and I need to obtain the spacing between these curves at a given level ...
1
vote
1answer
244 views

Plot a parametric equation in cylindrical coordinates

I'm looking for a way to plot this parametric equation on cylindrical coordinates. r = e^t theta = t+1 z = e^2t Any help would be appreciated
0
votes
0answers
36 views

How can I increase plotting resolution with RegionPlot3D? [duplicate]

I am trying to plot a region with RegionPlot3D, but I have some problems. Here's the code I use: ...
-1
votes
1answer
149 views

Function for importing and plotting data from excel spreadsheet

I know this must be a very basic question, but I could not find any answers. I need to create a function that: 1) imports data from an Excel Spreadsheet, 2) assign specific information from this xlsx ...
20
votes
5answers
725 views

Plot a partition of the sphere given vertices of polygons

I saw in this question that Mathematica can draw spherical triangles. I guess something similar can be done to plot a spherical polygon. I am interested in something similar: I have a set of ...
2
votes
2answers
89 views

Why is there always a horizontal tail line on the parametric curve?

I am trying to create a smooth, piecewisely continuous and differentiable curve by using Mathematica's Floor function, which is as in: ...
1
vote
2answers
68 views

Barlegend with a different z span for ListDensityPlot

I would like to rescale the colors in a plot and to do this in the same way for the color bar. (So this enables me to have the color bar span a (z) range larger than than the data itself.) I got this ...
-1
votes
1answer
46 views

Not plotting elliptic integrals [closed]

Integrate[1/Sqrt[mu^2 - Cos[t]^2], t] CenAng[t_, mu_] := EllipticF[t, 1/(1 - mu^2)]/Sqrt[mu^2 - 1] ParametricPlot[CenAng[t, mu], {t, 0, Pi/2}, {mu, 1.01, 3}] ...
0
votes
0answers
90 views

Trying to plot solution curves on top of a direction field

I'm trying to do some diff. eq. homework that requires taking a general solution to a differential equation and graphing a series of possible solution curves over a direction field of the general ...
2
votes
1answer
72 views

Calculate the partial vapor pressures of a variable at xB = 0.75 based on the interpolation functions of the data

I'm having troubles in solving an exercise for an assignment in my Chemistry course. Talking about interpolations, I've already have a graph but I need to calculate the partial vapor pressures of ...
4
votes
1answer
148 views

NDSolve Poisson PDE for rectangle with hole

When I solved the Poisson PDE with function NDSolve in a rectangular domain with hole in the center, and search the first derivative with x and y why appear these protrusions on the diagram around the ...