# All Questions

148 views

### Graphics3D/Plot3D rendering issue

I have an issue in Mathematica with the rendering of 3D graphics. Two sides (right and bottom) of some sort of bounding box are present, and, in the instance of ...
173 views

### A Query using Select and Quiet fails but Select by itself works

This is closely related to the question here, the key difference is that here data is structured as nested Association rather than a flat list: ...
119 views

### Causes “libGL error: failed to load driver: swrast” an Huge Overhead in Parallel under Version 10.3?

Under Linux (SUSE Linux Enterprise 11) for Mathematica Version 10.2/10.3 I observe the following error in parallel ...
170 views

### Strange WhenEvent Behavior

Bug introduced in 10.3 or earlier and persisting through 10.3.1 or later Given: ...
54 views

### NDeigensystem returns error due to mesh discretization when calculating vibrations of a cantilever

There was an transcription error in the code I provided in a previous post: NDeigensystem returns complex non-hermitian error for the calculation of vibrations of a cantilever This resulted in it ...
55 views

### How to access a web API with HTTP POST and JSON

I want to get data using HTTPS from POST https://developers.betfair.com/api.betfair.com/exchange/betting/json-rpc/v1 HTTP/1.1 using JSON ...
162 views

### How to draw a moving point with time?

I am new to Mathematica. Try to draw a point moving with time. Like at t=0, a point is at p1(coordinates are random numbers); at t=1, this point is at p2. And there is always ONE point on the graph. ...
116 views

### I want to compute the derivative of Black and Scholes option

Good evening to everybody, my question is about computing the derivative of a Black and Scholes option and to draw it. My code is ...
92 views

### NDSolve memory usage

I am trying to solve numerically a system of linear ODEs with some quickly varying driving functions. The basic command is: ...
67 views

### How to solve two ODE differential equations, numerically, with four dependent boundary condition

I have two ODE differential equations(DE) and four dependent B.C. $$y_1''(x)=-\frac{1}{2} \left(x-y_1(x)\right)$$ $$y_2''(y)=-\frac{1}{4} \left(y-y_2(y)-5\right)$$ $$y_1(0)=y_2(1)$$ $$y_1(1)=y_2(0)$$ ...
89 views

### Automatic text-wrapping in labels in TimelinePlot

Part-related to this question and part-related to this one, I would like to make use of the new features of TimelinePlot in 10.3, but would like to incorporate some ...
72 views

### Tooltip in Prolog and Epilog

I have a question concerning Tooltip. I got a ParametricPlot and included two pictures and a dynamic point. I try to use Tooltip for each of those 2 Objects. But it doesn't work. I am not quite sure, ...
166 views

### DiscretizeRegion on Raspberry Pi 2

Running DiscretizeRegion@Cuboid[] from the documentation under Raspbian on the Raspberry Pi 2, Mathematica version 10.0.0.0, gives the following response: ...
47 views

### Factor a polynomial Root into Roots of smallest possible degree

Suppose I have a polynomial Root representing an algebraic number. I want to represent it (if possible) as a product of several polynomial ...
62 views

### Fitting bivariate data using FindFit [on hold]

I am trying to fit the following bivariate data set using the FindFit function: ...
30 views

### Trying to get simple excel data to be imported as a social network directed graph

My data has two columns that we'll call A and B. The columns proceed as such A B A1 B1 A2 B2 A3 B3 .... I'm trying to make this into a directed graph where A1 has an outgoing edge to B1 and ...
4k views

### Are there any cases when For[] loops are reasonable?

To my mind the only reason for the existence of For[] loops in Mathematica is to allow new users with some experience in procedural programming languages to write ...
61 views

### How to make a list (of data points) whose name is the same as the file name from which the data is imported [duplicate]

I have a set of files, e.g. file1.dat, file2.dat,... containing data (list of data points to plot, manipulate...) I want to do the following ...
42 views

### How can I convert some data in TableForm to a list form like as {{0,1}, {1,2},{…,…},…,{m,n}}? [on hold]

How can I convert some data in TableForm to a list form like as So, I have some data there I take from laboratory, but the data has a TableForm 0.0 0.2174 1e-06 0.2178 2e-06 0.2172 3e-06 ...
42 views

### Identity Matrix in symbolic Tensor Product

I am trying to simplify symbolic tensor products. E.g. ...
56 views

### Mathematica 10.3 with repeating block [duplicate]

I've written a template notebook that include repeating blocks with Mathematica 10.2.0.0. Everything work well, but after updating Mathematica to the last version (10.3.1.0) I get an error when I try ...
374 views

### How can I invoke the solution of NDSolve to determine a parameter in my equation just inside NDSlove?

I am trying to solve a differential equation by NDSlove for $h(x,t)$. It reads $$h_t=h_{xx}-V_h-\lambda(t)$$ where $V_h$ is a given function of $h(x,t)$ denoted by ...
79 views

### Interpolation of data on a 4D grid

I have a 4D grid ...
78 views

### Double arguments and place of the underscore

Could someone explain me of this bit of code below is correct: Is it possible to define a function with a second bracket, see below, i.e. f[x_][y_]? And what does ...
41 views

### Random bipartite graphs?

RandomGraph[{n,m}] generates a random graph with $n$ vertices and $m$ edges. I want to generate a random bipartite graph, like ...
47 views

My goal right now is to implement some rules like linearity etc for noncommuting operators (arbitrary matrices etc). This is partly an exercise for me to understand MMA better so giving me a package ...
42 views

### Conditionals within For Loops [on hold]

The following construct: For[i = 1, i <= Length[a], i++, a[[i]]? If[b[[i]] == a[[i]], p1++, p2++]: If[b[[i]] == a[[i]], p3++, p4++]]; yields the ...
67 views

### Problems with QueueingNetworkProcess [closed]

I have a two stage queueing network and want to vary the number of servers at the second node. The input data and the Manipulate command is below: ...
70 views

### Image3D does not give the distinctive blurry look, version 10 Linux

The help file for Image3D shows two examples, But when I try to execute this code on my system ("10.3.1 for Linux x86 (64-bit) (December 8, 2015)") I get the ...
476 views

### Cluster a signal into areas of equal intensity

Introduction I have a greyscale photograph that I want to partition into areas of equal intensity. This means, that the integral over each partition should be (roughly) equal. There is no unique ...
327 views

### Postfix with two arguments

This must be duplicate but can't find any related post. I'm want to pas it two argument in postfix like f[a_,b_]:=a+b; 1,2//f ...
232 views

### How to modify tick's range in Image3D

Suppose we have an array of color data ...
41 views

### Find the height(h) of a Circular segment based on Radius and Length(c) [on hold]

I have found the formula for calculating the R of a circle, based on a circular segment, which is; R=h/2+c^2/(8h) Where, R is ...
43 views

### Suddenly all outputs begins with a newline… What to do? [on hold]

I am almost sure nobody has yet asked this question, which is strange, because it concerns a tiny but annoying glitch. Now and then, out of the blue, all output cells are starting with a newline. I ...
47 views

### Timing and ListPlot

I am currently trying to examine the Timing function as it relates to generating primes and factorize large integers. What I want to do is to visualize how time ...
33 views

### Install hangs for precompiled Cuba integration executable

I am trying to use the Cuba integration package in Mathematica 10.2 on a Windows 10 machine. However, having downloaded the supplied Vegas.exe MathLink executable, when I try running ...
54 views

### How to define an exclusion zone for NDSolve

I need to numerically integrate a differential equation and define two exclusion zones to stop the integration. The Mathematica code looks like this : ...