0
votes
0answers
76 views

Simulation of Circular plate vibrations

I'm trying to simulate the vibration of a circular plate with a free edge. The plate wave equation describes the vertical displacement of the middle surface of the plate $(\zeta)$ as a function of ...
0
votes
0answers
77 views

plot $f(x)$ against $\frac{1}{x}$ [closed]

Hi guys this is really a simple question: if i have $f(x)$ how do i plot this function in mathematica against, for example, $\frac{1}{x}$? thanks in advance
7
votes
5answers
301 views

What is my problem with MeshFunction?

I want plot the max value in a sine plot. We can use the following code ...
2
votes
1answer
109 views

RegionPlot3D run forever when plotting 3D ParametricRegion

when working with 2D, RegionPlot works fine with ParametricRegion as can be seen in this example: ...
2
votes
1answer
166 views

Finding average error of the data

Considering I have some data, and I want to fit the data to a linear fit and find the average error from the linear fit, how can I do that using Mathematica? I have ...
1
vote
0answers
61 views

How do I choose only one branch of ArcTan?

I have a problem concerning ArcTan drawing a graph using ListPlot. I import a table of data: ...
3
votes
1answer
177 views

Circular membrane vibration simulation

I'm new in Mathematica and I'm trying to simulate the vibration of a circular membrane for math project but I don't even know how to start. The wave equation describes the displacement of the ...
0
votes
0answers
58 views

Trouble outputting Plot

I am trying to solve a system of ODEs and plot them with Manipulate but I keep getting blank outputs. Below is my code: ...
0
votes
1answer
124 views

Plot3D unable to understand input function

I'm attempting to plot the Wigner Function of the Morse Oscillator defined as ...
0
votes
0answers
88 views

Timing: how make a program to work faster using built in functions and tables

I want to improve my code to make it working faster even for very large numbers. ...
0
votes
1answer
43 views

Switching the ordinate and abscissa causes problem in `ParametricPlot`

I have a function that plots properly in PolarPlot, but I'd like to plot it in ParametricPlot and then switch the y and x ...
2
votes
2answers
83 views

Graphical solution of a a two-variable system containing an equation and an inequality

I'm currently studying atmospheric-gravity waves and their dispersion relations. I want to have look at values of $(x,y)$ that solve the following system : \begin{equation}\label{}(1) \left\{ ...
0
votes
1answer
123 views

Discrete peaks to curve via Voigt summation

I have two data sets. One is an experimental recording of an absorption spectrum, composed of regularly spaced (wavenumber, intensity) coordinates with a fine wavenumber resolution, thus making ...
11
votes
4answers
402 views

Plot the minimum of a list of functions

This is my first question on any stack-exchange site and I'm also very new to using Mathematica software so please excuse/correct me if I mess up. I would like to take a list of functions of a single ...
2
votes
1answer
179 views

Plotting attributes of vertices in WattsStrogatzGraphDistribution[n, p, k]

I have a graph WS = RandomGraph[WattsStrogatzGraphDistribution[n, p, k]]. I need to plot several characteristics of each v: the ...
1
vote
1answer
169 views

ListDensityPlot

In Mathematica help it's written that: ListDensityPlot[array] -> generates a smooth density plot from an array of values. ...
0
votes
1answer
76 views

Blank plot that shows up briefly when changing plot options

I wrote some code in Mathematica to calculate and plot, in tw0 different ways, a function depending of two variables. But the plots are empty even if it takes a few minutes to evaluate the plot ...
0
votes
0answers
102 views

A problem with functions and Infinite expression 1/0 encountering

Following code (function) makes integrals and then replace f[x] with Cos functions and calculate the definite parametric ...
0
votes
1answer
106 views

A problem with set values

The following code is just an example to clearly explain my problem. Assume that : ...
1
vote
3answers
176 views

How to update a list in a function in each iteration

There is a list with numbers 1 to 8 ( p1 ) and another list (j) which contains 4 numbers which shows different 4 positions of ...
0
votes
1answer
50 views

How to put some values from a list into a function in a Do loop

I want to program a code in MATHEMATICA in order to calculate some values in different iteration. For example, assume this list: list={1,2,3,4,5} Now assume that ...
6
votes
1answer
239 views

Why won't my function plot?

If I define ...
1
vote
2answers
157 views

Plot a function which depends on itself

How can I plot a stepwise function like f[a, t] = 10 Exp[-0.1 Sin[t]] for a > t and ...
0
votes
0answers
128 views

Intersection of any triangle with a circle in Cartesian coordinates

I started a notebook dealing with metrics in a triangle and its intersection points by a circle. Up to know I reached the point of having plotted a triangle, a circle with an arbitrary centre and I ...
0
votes
1answer
86 views

Working with functions

I am required to write a function that takes a function as a parameter. ...
0
votes
0answers
22 views

Question about a ParametricPlot with a shading grey family of lines and/or different sizes [duplicate]

So, I have this function of the polar angle $\theta$, with a varying parameter $t$: {Cos[\[Theta]] (1 + Sin[t]), Sin[\[Theta]]} and I want to draw it in a ...
1
vote
2answers
236 views

Multiple curves plotted with different colours [duplicate]

I am trying to use ColorFunction for 2 functions on the same plot. I only want the cubic equation to change colour. ...
1
vote
1answer
230 views

Detecting a nonlinear edge in a 2D point pattern

Following an earlier post here, I have generated a point pattern on the unit square $[0,1]\otimes[0,1]$, which is described by a piecewise constant intensity function constructed so that (in ...
0
votes
2answers
176 views

How to find intervals in the domain corresponding to intervals in the range?

I want to find the intervals for the argument m1 of this function corresponding to the value for the function lying in given intervals of the range: ...
2
votes
2answers
134 views

how to get a linearized curve in some intervals

in below picture I draw a graph base on weight of a controller system against cost function. I want to linearise and divide this curve to for example 5 five intervals. is there any function in ...
3
votes
2answers
313 views

How to plot several functions without jumping? (multiple eigenvalues of a system as functions of 2 parameters)

I've been working on this research problem for months with some success by no global/proper solution to the problem. So I have square, Hermitian matrices of various sizes ($8,20,38$ dimensions) with ...
0
votes
1answer
156 views

How to plot a function with variable with an open interval? [closed]

I want to plot this revenue function: $r=30q-0.3q^2$ I have no range, its an open interval, but when I try to plot in Mathematica it requires the min and max of the plotting limits. How do I do ...
6
votes
2answers
178 views

how recover lost data of coordinates from contourplot of mention data?

I have made Contour Plot for a lot of data, like this ...
0
votes
0answers
92 views

Custom Errorbar-Function

I wanted to have a better control on the ErrorListPlot, so I defined a custom ErrorBarFunction: ...
3
votes
3answers
243 views

How would I plot the volume element in cylindrical coordinates?

I have this graph: But it doesn't have a function so I can't just plugin in a function into wolfram or mathematica to plot it. I have these coordinates to make it however: ...
2
votes
1answer
82 views

What is the need for function parameters? Many possible inputs

If I have many possible variables related to one another, why do I need to define my function with parameters for plotting? For example, if I have an equation like: ...
1
vote
1answer
86 views

Issues with creating functions [duplicate]

Sometimes when I try to create a function inside a function, Mathematica gives me a hard time. I usually just have to play around with the syntax until it gets something it "likes" but I really have ...
0
votes
1answer
100 views

Nested function problem [closed]

I have trouble defining the following function in Mathematica sp[M_, u_] := 1/Sum[u^k M!/(M - k)!, {k, 0, M}] After defining it Mathematica displays an error. ...
25
votes
4answers
306 views

How can the behavior of InterpolationOrder->0 be controlled?

In ListPlot and Interpolation, the option InterpolationOrder->0 uses two different ...
3
votes
1answer
140 views

plotting hypergeometric functions

Does anyone know why a plot of a hypergeometric function turns out differently in Mathematica than in Maple? The function I'm plotting between x=-30 and +30 is: ...
-1
votes
2answers
223 views

How do I generate a table of data points from a function and add random noise? [duplicate]

I am trying to generate a table of data for the function: ...
2
votes
2answers
174 views

Restarting an Animate animation after variable in Manipulate changes

I've been trying to restart an animation after variables change from Manipulate PopUpMenus. My animation takes the form: ...
2
votes
1answer
725 views
0
votes
1answer
826 views

How do I define the domain of a function?

I have a function of two variables, f[x_, y_], and I would like to restrict the domain to values of x and ...
1
vote
1answer
707 views

3D plot of two 2D functions

I would like to plot two 2d functions in a 3d coordinate system. Examples are z = x^2 and z = y^2. Each function has one ...
0
votes
0answers
27 views

How does Plot evaluate its argument? [duplicate]

I have a list of about twenty InterpolatingFunctions that I'd like to plot. They are interpolations from experimental data (frequency spectra between 100 and 5000 ...
1
vote
1answer
672 views

Plotting a complex function [duplicate]

What does it mean if this message appears: {Im[(1-E^Times[<<3>>] f)/(1-Power[<<2>>] f)]-0,Im[(1-E^Times[<<3>>] f)/(1-Power[<<2>>] f)]-0} must be a list of equalities or ...
3
votes
2answers
1k views

Define a color function using Piecewise

How can I define a ColorFunction for my ContourPlot using Piecewise? For example after ...
7
votes
6answers
584 views

Manipulate and Turning Expressions into Functions

I've been trying to use Manipulate to do interactive plotting, but I've been running into a few problems with saved expressions. I have an expression saved as "func" and I want to work with it and ...
3
votes
1answer
270 views

Plot maximum and minimum temperature of a day for range of time interval

How to display (in any graphic representation) the maximum and minimum temperatures for one city in one of these selected time periods over the 5-day period? The time periods are: Morning (06:00 to ...