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

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4
votes
2answers
316 views

How to plot an implicit value funtion

Previous question has been solved (Gap in a continuous plot). Here is a new related question. ...
0
votes
2answers
74 views

trouble with adding a legend to a plot

I am having trouble with adding a legend to a plot. this is my code,I tryed to use serval things,like ...
2
votes
2answers
147 views

Using ListPlot and lists of Associations

I have a list of associations : ...
1
vote
1answer
256 views

Showing separate surfaces

The XYZPipeJunction is removed using circular trig functions from Both. ...
2
votes
4answers
217 views

Problem with ContourPlot [Not smooth curve] [closed]

Here is my code ...
13
votes
5answers
807 views

Gap in a continuous plot

Why do I get a gap in the plot below and how can I fix it? (If you are interested in it, you can see a new related question: How to plot an implicit value funtion, which is also a little chanlenging) ...
4
votes
2answers
245 views

How to plot this region?

Consider the $2\times 2$ matrices \begin{align} A=\begin{bmatrix} a_{11} & a_{12} \\ a_{21} & a_{22} \end{bmatrix} \end{align} and \begin{align} B=\begin{bmatrix} b_{11} & b_{12} \\ b_{...
3
votes
1answer
673 views

List Contour Plot: Delete some contour lines, but keep the colors

I'm trying to make a Contour plot of a set of data of the kind: $(x,y,f(x,y))$ What i'd like to do is to remove the majority of the iso-line and just leave two of them, but keeping the changing of ...
3
votes
1answer
185 views

How to make a diagnostic plot for the regression?

Context I am interested in LinearModelFit, and would like to make diagnostic plots using Mathematica. I cannot find them in Mathematica document center. For example, the following R program makes ...
2
votes
2answers
470 views

The graph of inverse function $f^{-1}(y)$

Show that $f:I=(-1,1) \rightarrow \mathbb{R},$ it follows that $$ f(x)=\begin{cases} \quad1-x & \text{ as } -1<x\leq 0, \\ \frac{{x}^{-1}+ \lfloor {x}^{-1}\rfloor}{1+{x}^{-1}+\lfloor {x}^{-...
3
votes
2answers
473 views

Plotting boundary of piecewise function in ContourPlot

I am trying to do a ContourPlot of the following function: $$\psi=\begin{cases}\left(\sqrt{x^{2}+y^{2}}-\frac{0.25^{2}}{\sqrt{x^{2}+y^{2}}}\right)\frac{y}{\sqrt{x^{...
10
votes
1answer
660 views

Moving polygon on path curve to create 3D shape

How can I move some polygon list = {{0, 0}, {0, 15}, {7, 13}, {2, 13}, {2, 5}, {5, 5}, {5, 3}, {2,3}, {2, 0}}; Graphics[{Black, Polygon[list]}] so it follow some ...
3
votes
1answer
282 views

Rescaling and reorienting Matrix Plot axes

I have implemented a numeric Laplace Solver in C++ and am trying to graphically represent the validity of my method. I have outputted the grid from C++ and imported it into Mathematica to get the ...
0
votes
1answer
256 views

RegionPlot of an area inside a polar plot (or its equivalent parametric plot)

Let' s take a most simple example for a polar plot, the Archimede's spiral. ...
0
votes
1answer
68 views
6
votes
1answer
407 views

Is it possible to draw a curved edge between two vertexes of a graph? [duplicate]

The following code generates a graph. ...
5
votes
4answers
670 views

Plotting piecewise functions

I have a list of N functions called functionList. N can be any number. Also, I have a list ...
1
vote
1answer
479 views

Plot multiple solutions of a system of differential equations with different values of constant c by using NDsolve

I am traying to solve system of differential equations with different values of constant c then plot the solution with different values of the constant c. where c= 2.2758, 2.04822, 1.82064, 1.59306, 1....
4
votes
2answers
133 views

How to hide arrow tail in VectorPlot3D?

I want to plot arrow head only, because I want to plot a "surface" consist of all arrow head(draw a little ball or point instead of real arrow head,because a 'surface' with real arrow head is terrible....
15
votes
1answer
329 views

Bug in plotting function using FindMinimum?

Bug introduced in 10.0 and persisting through 10.3 or later While working on an answer to RegionPlot from NDSolve, I came across this strange behavior of ...
2
votes
0answers
57 views

Error message with RegionPlot after SetOptions

I get an error message with SetOptions[RegionPlot, ImageSize -> Medium]; RegionPlot[u v (1 - v) >= 10, {v, 0, 1}, {u, 0, 100}] that says ...
0
votes
1answer
235 views

Display 3D function and its gradient in same graphic [duplicate]

Is it possible to display e.g., $z=x^2+y^2$ with Plot3D and in the same box, in the $z=0$ plane, plot its gradient?
2
votes
1answer
382 views

Sinusoidal Wave over a Circle

A sinusoidal wave can be plotted in a two dimensions. Generally and simply : y[x]=Sin[(2pi/lambda)x] As it is being plotted, the horizontal axis (as a straight ...
2
votes
0answers
83 views

How to combine several plots with this special alignment? [duplicate]

How can combine different plots just as shown in the image? Just give codes about one example plot,and tell me how to create plots as the form as gaven. Follows are codes: n = 2; z = 200; [Alpha] = 11/...
7
votes
2answers
250 views

RegionPlot from NDSolve

I am having quite a headache using RegionPlot to see the region of acceptance of certain coupled differential equation. I shall elaborate and try to be as ...
0
votes
0answers
79 views

Exporting graphic to pdf acting funny [duplicate]

I have a plot created in a notebook that I usually would right click on and choose Save as pdf. It worked fine until this morning. Shown below, the first plot is what I used to get. The second plot is ...
0
votes
1answer
1k views

Plot a table of functions with different color [duplicate]

I have a function with two independent variables: SNR[t_, f_] := 20 Log10[1/(2 Pi f t)] And I have a list for "t" ...
0
votes
0answers
42 views

How to show “AxesLabel” when “Frame -> True” [duplicate]

I'm using Mathematica 9.0.1, and using "LogLinearPlot" function. My problem is when I enable the "Frame", and set "AxesLabel", the labels won't be shown. If I disable the "Frame", the labels are shown?...
1
vote
1answer
182 views

Trace two DateListPlots?

I currently have two DateListPlots in the same graph, with two different y-axes. I downloaded the package "TwoAxisDateListPlot" to accomplish this with ease. Now I want to be able to trace both of the ...
1
vote
1answer
163 views

Plotting CSV files with UTC Universal Time

So I have many CSV files in format like this: 2014-12-11T16:13:13.038337Z , 3.90092 2014-12-11T16:14:13.456558Z , 3.89734 2014-12-11T16:15:12.444318Z , 3.90092 I imported a CSV file ...
6
votes
2answers
235 views

SmoothHistogram inside Show doesn't respect plot range clipping?

You can try this for yourself. Run the following code a couple of times: ...
3
votes
1answer
461 views

Centering histogram bars over axis values

I'd like to center the bars in my histograms over the correct values of the x-axis. Here is a simplified example: The most common value in the dataset is zero, but glancing at the histogram this ...
5
votes
3answers
171 views

Find Unconnected Subregions

If I have a region, how can I identify sub regions that may be disconnected, if any exist? region defines a rectangular region given two diagonally opposed ...
12
votes
2answers
340 views

Method options for DensityPlot and ContourPlot

What Method options are allowed for DensityPlot and ContourPlot? I am unable to find this ...
0
votes
1answer
338 views

How do I plot results of complicated calculations in Mathematica?

I am new to Mathematica and am struggling with making plots of how features of solutions vary with parameters. For example, I can find the eigenvalues and zeroes of a Sturm Liouville problem (showing ...
4
votes
1answer
461 views

How can I improve ContourPlot to get smooth curve?

I am working on the ContourPlot to creat contour line of a InterpolatingFunction recently. This is my data. This is my simple ...
7
votes
4answers
2k views

Plot of Implicit Equations

I've read Cool Graphs of Implicit Equations recently. In the article, it mentioned a software GrafEq which can draw graphs of arbitrary implicit equations. For example, And I've tried several ...
2
votes
1answer
135 views

Align axes in GraphicsGrid - with one rotated figure

I would like to align the axes of the three plots: g3, gPosteriorMarginalMu and gPosteriorMarginalSigma: ...
0
votes
1answer
123 views

Add a legend to a DiscretePlot - Version 8 [duplicate]

I have found several topics with legend issues but no answer to my problem. I have a function and I need to plot it for integers only (hence discrete plot) and then add a legend too. But ...
8
votes
2answers
557 views

How can I use ContourPlot to creat streamline: proper arrow orientation and correct domain?

I get into trouble when I use ContourPlot to draw streamlines in a free surface flow domain. This is my data.The data are a little bit big, please be patient. ...
4
votes
1answer
181 views

ParametricPlot3D: The Mesh shows some unexpected wires to the origin. How to remove them?

In the code below a hexagonal shape is defined and plotted. The ParametricPlot3D shows the hexagonal design almost as intended. However, the mesh makes some strange "wires" to x=y=0. This is ...
4
votes
2answers
338 views

Specifying and solving a PDE on an L-shaped domain

I wish to solve Laplace's equation with Dirchlet boundary conditions on an L-shaped domain as described here http://www.inf.ethz.ch/personal/tulink/FEM14/Ch1_ElmanSyvesterWathen_Ox05.pdf I know how ...
1
vote
1answer
58 views

How to share `ChartLegends` among multiple `BoxWhiskerChart`s in `GraphicsGrid`?

First, create two BoxWhiskerChart: box1 and box2 ...
1
vote
1answer
115 views

Derivative of a plot [closed]

I plotted a graph numerically, so I don't have a definition of the plotted function. Now I want to plot the derivative of this graph. Is there any way to do it in Mathematica? I have the following ...
3
votes
3answers
170 views

Colorize an image using two parameters

I have a matrix of data. I use Colorize[Image[Rescale[data]],ColorFunction->"Rainbow"] to create an image from the data where the value of each pixel is used ...
0
votes
0answers
60 views

Manipulate plot [duplicate]

How can one do this: ...
6
votes
3answers
349 views

Mathematica 10 ListPointPlot3D PlotTheme bug?

Bug introduced in 10.0 and fixed in 10.3 or earlier I am using Mathematica 10 to generate a 3D point plot of a crystal lattice structure. I wanted to set the ...
1
vote
2answers
190 views

Ratio of variables AxesLabel is messed up when plot exported to pdf

On the vertical axis of a Plot whenever I have a ratio of variables in a string as axes label, the exporting of the plot to PDF format messes this ratio up. Minimal working example: ...
2
votes
1answer
152 views
0
votes
0answers
43 views

Plotting the real positive solution to a parametric equation [duplicate]

I have the following parametric equation $$ x^2-a=0 $$ where $a$ is a given parameter. I would like to plot the nonnegative real root ($\sqrt{a}$) using NSolve as $a$ varies from $0$ to $1$. Can ...