All Questions

54 views

Exported CDF file does not include GeoGraphics [duplicate]

I'm trying to display a map on manipulate and the case is .nb files shows it but when I export it to .cdf this format not show the GeoGraphics map ...
45 views

How to extract part of association?

Considering an association: asc = <|"a"->1, "b"->2, "c"-><|"e"->3, "c"->4|>, "d"->5, "e"->6, "f"-><|"g"->7|>|> How ...
44 views

A book or tutorial/guide for “Systems Interfaces & Deployment”

I'm looking for a complete guide (call it a book, tutorial, guide or whatever) about some programming topics which are not enough covered by Mathematica Documentation Center, in my opinion. Topics ...
52 views

Convert .csv Dataset and store in Databin [on hold]

Trying out the new Databin product in the Wolfram Cloud. I have a simple ,-delimited .csv file with a header row which I have imported using the follwing: ...
2k views

Can users of Mathematica on Windows 7 or Windows 8/8.1 upgrade their computers to Windows 10 – a process that began today? Does Mathematica work? Are all the settings, licenses, access to files and ...
30 views

Interpolating function for data with five independent variables [on hold]

I have to optimize the risk reward of a financial structured product depending on several variables: the tenor (between 12 and 36 months), the type (american, european), the Knock In (KI) ...
66 views

How to disqualify a rule [on hold]

Executing this line Assuming[x < 0, x -> 10] Expected output: False Say x -> 10 is a root of a polynomial ...
28 views

Another Integration to prove [on hold]

We want to prove this integration $\displaystyle\int_{-\infty}^{\infty} \frac{x sin (x)}{1+x^2} = \frac{\pi}{e}$
70 views

Random variable within Manipulate: how to make it independent on other controls

The code sample: ...
7 views

What's the last whole number before a googolplex? [migrated]

"What's the last whole number before a googolplex?" My six yr old asked me this, this evening, how does a math challenged dad answer this?! A googolplex is hard enough as it is to imagine or ...
156 views

How to increase the thickness of the edge in a random image

This is a Voronoi Diagram. I really want to know how to change the thickness of the "wall" of each V-cell, in another words, the thickness of the edge in this diagram.
152 views

List all “duplicate” elements in Tally

Tally[list,test] can use a custom function test to judge if elements are equal. But the output will only give the first element ...
33 views

RegionPlot generates unwanted mesh lines [duplicate]

Consider this example: ...
32 views

How to find roots of a bi-quadratic equation having symbolic coefficients? [on hold]

I have the following equation with the symbolic coefficients specified using syms which I have been trying to solve in MATLAB ...
62 views

Usage of StringTemplate

The documentation for StringTemplate has the following example ...
58 views

Plot a circle and create a 3-D revolution plot out of it

If I have the equation (x-2)^2 + (y-2)^2 == 1 I can use a ContourPlot, however am having trouble changing the axes origin. I ...
92 views

ImplicitRegion gives arbitrary boundaries

This question uses Mathematica 10.2.0.0. equation1 is the major unbounded region I would like to generate: ...
95 views

What I did: ...
44 views

Confusion over blank sequence in pattern matching

My overall goal was to produce a list of heads used in a graphics output. For an example I used: ...
251 views

What I did: ...
25 views

How to use function, NIntegrate, FindRoot together? [duplicate]

Using a function in NIntegrate works fine... ...
125 views

What I did: ...
71 views

Prevent 10.2 from creating “Wolfram Mathematica” directory on Linux

Since upgrading to version 10.2.0.0, every time I start the Mathematica front-end it creates a "Wolfram Mathematica" directory under my home directory. (It never seems to put anything in it.) Anybody ...
92 views

What I did: ...
31 views

Fishing for monomials in a nested or partially factored polynomial stream

I have a problem where I'd like to be able to take a multivariate polynomial whose variables are nonscalar and is not written explicitly as a sum of it's nonzero monomial terms and determine which ...
45 views

Function to list Collatz sequence doesn`t work [duplicate]

I am new to Mathematica and was trying to make a function that lists the Collatz sequence stating with a given number, but I can´t get it to work. Here is my function: ...
77 views

Mathematica file transforms to some strange format

I am facing a very annoying problem with mathematica file. Sometimes it is automatically saved in a "pdf like" bizarre format. Each input and output line of the original (.nb) file starts with In[#] ...
107 views

How can I write a loop to get many values from a solution?

I am looking at the value of x[t] at day t = 200 over several years. I tried to do it using a For-loop but it didn't work. This ...
35 views

Binomial decomposition of a list? [closed]

Given a list L with n elements, I would like to generate all possible unordered subsets of ...
80 views

Potential flow over cylinder with FEM: Pressure field is flipped

Much in the fashion of a few problems already answered on Mathematica.SE (1, 2), I am trying to solve the Laplace equation in velocity potential $\phi$ to simulate irrotational, inviscid flow over a ...
323 views

Speeding up the built-in Rudin-Shapiro and Thue-Morse sequence functions

Version 10.2 introduced two well-studied sequences as functions: the (Golay-)Rudin-Shapiro sequence (RudinShapiro[]) and the (Prouhet-)Thue-Morse sequence (...
77 views

How to plot a function defined by an expression containing integrals [duplicate]

It seems Mathematica does not like it when it is given a function defined by an integral to plot. How would one plot a function $F(x)=\int_0^x\int_0^xf(t,s)dtds$ on a given interval? Edit In ...
55 views

Pulling variable out of NonlinearModelFit [on hold]

I have a fit, Dynamic[f1 = NonlinearModelFit[d1, a Exp[-(b (x - c1))^2] + yoff, {a, b}, x]] Where I need to be able to access ...
49 views

Evaluate result from NDSolve is slow [on hold]

I am calculating some partial differential equations with NDSolve, it does it well. However when I try to Evaluate the ...
72 views

Find sub-sets of vanishing additions or subtractions from a list?

Let's say I have a list L containing n numerical numbers. Now I want to find all sub-sets of ...
119 views

NMinimize fails on Mesh?

Context I want to identify the minimum of a solution of a PDE found on a mesh. Problem I do not understand why NMinimize fails on a mesh? As a test case, ...
58 views

Multivariate Equation solving [closed]

I have the following equation: r^(1 + Rho) - r^Rho (-1 + Mu) - z Rho == 0 I searched the list but I couldn't come up with a solution. Any help is appreciated. ...
27 views

Store Eigenvalues of a matrix in a list for varying one symbolic variable [closed]

I have a matrix r which has a symbolic variable Rs which varies from 0 to 2. I want to find the eigenvalues using ...
50 views

Import a column of data, make a matrix from it and export it WITHOUT curly braces

I'm new here and with Mathematica, too. I want Mathematica to import data from a txt file (it has one column of data). These entries are z-values. From this I want to make a matrix - 508 entries make ...
31 views

Relative factorisation with scalar quantities

I'd like to find a natural way to tell mathematica that a given unknown in a polynomial should be treated as a number, unlike the other variables. Typically I'd like to sum two polynomials in several ...
71 views

List connectivity of points in discretized mesh

I'm trying to automate the extraction of the points and a compatible connectivity list for meshes created using the DiscretizeRegion or similar method. If I create ...
19 views

How to obtain the value of a single symbol with mathlink

I am trying to write a (C) routine which reads the value (a list) assigned to a single symbol in mathlink. I tried things like ...
109 views

How may I avoid ParametricPlot3D clipping? [duplicate]

What I am doing: ParametricPlot3D[{Cos[z/2]^6 * Cos[t],Cos[z/2]^6 * Sin[t], z}, {t,-Pi, Pi},{z,-Pi,Pi}] What I get: What I want: what I get, but without the ...
96 views

Solve an inequality involving a sum with a parameter

Good day. I am new to Mathematica and I am looking for advice. Is it possible to solve $$\sum_{k=0}^{n} \frac{p^k}{k!}>0$$ for $n$ where $p$ is a parameter? When I do ...
142 views

Generating Meshes with Conforming Boundaries for FEM

I would like to solve a PDE on an annulus with some boundary condition that relates the inner circle to the outer circle. (For example, periodicity along radial lines). If I use a finite element ...
34 views

Hold and Release an import [closed]

I'm in Manipulate bloc to make a dynamic car selector, but there is a point in which i need to load the car specifications but if I don't hold the import causes an error here is the code ...
46 views

How to deal with Missing[NotFound] [closed]

I'm getting the position in array of pick value, and always obtain Missing[NotFound] until I select something, there are any way to check if variable is a number ...
44 views

Export XMLElements with MathML contents

Setup Here's my mathML expression: mathML = ExportString[1/2, "MathML"] ...
81 views

NDSolve : Boundary conditions of lower order

Given the (dummy) problem ...
11 views

Physical interpretation of residues [migrated]

What is physical interpretation of residues of poles (of any order) of a complex function? Poles represents the points where a complex function cease to be analytic and residues are calculated to ...

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