# All Questions

40 views

### Color Snapping When Using VertexColors with a Tube with BSplineCurve as an Argument

I think I've identified a bug in how VertexColors are treated when rendering a Tube object where the underlying data is a ...
49 views

### Generic templating system

I'm trying to implement a templating system in Mathematica, a bit like the List<List<T>> you would find in C#. Here's how it looks so far: ...
34 views

Consider: ...
78 views

### Family of Lines

I need to draw a family of lines connecting (a,0) and (0,b), where a+b=2, and determine an equation for the envelope of this family of lines. I need to do this in mathematica and don't know where to ...
24 views

### How do I call a function that has a default parameter value? [closed]

I have defined a function that has a default value for one of it's parameters. ...
46 views

### Label of Ticks are overlaying

I have a little problem that's driving me crazy. The problem will be clear from the graphic: the text of the tick labels. on the Y-Axis are crossing/overlaying. I tried everything but I found nothing ...
34 views

### Using Check[] on multiple statements

I am using a loop to run run multiple fits. If a fit fails, I don't want it to either appear in my data or to affect later fits so I am using the Check[] function to catch if any errors occurred (I'm ...
58 views

### ODE using Mathematica [closed]

A man throws a pebble straight up. Its height $y(t)$ satisfies the differential equation $y"+\gamma y'=-g$, where $g$ is the acceleration of gravity and $\gamma$ is the damping rate due to frictional ...
119 views

### Extruding a wierd 2D shape to make a prismatic 3D shape

I have the outline of a 2D shape defined by a periodic radius R[θ]. I would like to extrude this linearly to a prismatic 3D object that has my cross-sectional ...
23 views

### Region Plot - Non Intersecting Regions

Is there anyway to plot non intersecting regions with RegionPlot? I was thinking someting in the spirit of: ...
31 views

### How to get an obj file and close it using the reflection without knowing what the vertex is?

I was given an problem in mathematica, that gives me a .obj file, and I need to close it. All I was given was this, ...
56 views

### How to draw a 3D Plot with non-numerical axes?

I've got a CSV file that looks like this: c1,c2,m1,m2,m3 'a','b',1,0.5,4 ... 'x','y',10,100,4.21 Where c1 & ...
142 views

### How to plot functions in multiple coordinate systems

I´m curious if is it possible to plot in: A. two different Cartesian coordinate system who share the same plane but have different origins and rotation. The visualization should preferably resemble ...
17 views

### Trouble with Minimize function

I'm trying to do my own curve fitting, by specifying a model, an error function, and minimizing it for some data. I realize I could just use FindFit, but I would like to do it this way just for fun. ...
303 views

### How to force Return[] to return from an arbitrary point (like in C++)?

I need to test some complicated conditions to calculate a Return value. But MMa doesn't let you Return[] from anywhere the way C++ does. The structure of my Module is similar to this: ...
91 views

### Implementing the Golden Section Rule

I am attempting to write a code which brackets the minimum of a unimodal function, using the Golden Section Method Below. I am have serious issues debugging my program though, any help will be ...
33 views

### How can I rename the local kernel without causing issues?

I would like to name my kernels. However when I remove "Local" Mathematica becomes unstable, sometimes crashes sometimes doesn't initialize correctly. Is there something special about the name ...
121 views

### Expressing a series formula

I want to generate a series of the following kind in Mathematica: $\quad \quad a(n+1) = a(n) + ({\rm prime}(n+1) - 1)/2 \quad \mbox{for odd primes},$ so that the resultant series is ...
72 views

### Trying to write my own Greedy/ Nearest Neighbor Algorithm

So I'm trying to write my own function and compare it to the results I have from using FindShortestTour. Does anyone know how to find the distance from each city to each of the others without ...
31 views

### Strange evaluating indication of output cells

Something like this happened when I was working with two Manipulate cells. I saved the notebook, duplicated it and only keep these two cells, and opened the ...
175 views

### Generating animations of clouds with Mathematica

I'd like to generate some visually-pleasing animations of clouds, fog or smoke with Mathematica. My idea of "visually-pleasing" is along the lines of one of the images on the Wikipedia article for ...
45 views

### Mathematica doesn't italicise a function's argument in the function's body if it appears in the denominator and the denominator is edited. A bug?

Bug introduced in 10.0.0 and persisting through 10.1.0 or later I'm using Mathematica 10.0.2 for Mac. On a fresh kernel, I type this: a is not italicised ...
118 views

### Integrate using \[Esc] int \[Esc]

I like writing integrals symbolically instead of using Integrate[]. I suddenly seem to not be able to do this and am confused. I type \[Esc] int \[Esc] then ...
43 views

### Why wrapping this ContourPlot inside a Manipulate changes its output into something unrecognizable?

I am a bit puzzled: I wrap the same exact ContoutPlot inside a Manipulate, and it looks all wrong (I don't know what it's drawing but it does not look like the zeros of my polynomial). What am I doing ...
101 views

...
50 views

### Solving fifth order polynomial equation [closed]

I am trying to solve this equation: 1/s^3 + 3s^2 + 4s + 1 But I am not able to solve it. A little help would be appreciated. P.S: I am new to Mathematica and I ...
39 views

### How I can make the StreamPlot of this differential equation?

I need the StreamPlot of this differential equation but I don't know how. dp/dt=0.4p(1 - p/30), 0 <= t < 5 and 0.4p(1 - p/30) - 0.25p, t > 5
25 views

### FourierSinCoefficients extremely slow

I'm just playing with Fourier decomposition of periodic functions. We had a similar example with standing waves and cosines in class, so I tried to expand a triangle wave in sines. This is what I came ...
122 views

### Adding annotations to plot with vertical leader line to the curve

I am working with some GPS data for a bike trip I am going on. All the routes are given so it's easy to simply follow the line on your GPS. I am looking for a way to visually summarize information ...
74 views

137 views

### How can I create function which contains an ODE system and its numeric solution?

I have created a function like the following, which contains an ODE system. And I want to know the effect of different parameters. ...
169 views

### How to make multiple if statements?

I know Mathematica's if format is If[test, then result, else alternative] For example, this ...
19 views

### Proof left-continuous of fucntion [closed]

Hello everybody I have really no idea how to solve this question:
62 views

### How would I go about simulating conditional random birth 100 times?

So I have the following scenario: Assume you have this organism that reproduces by itself. An organism either reproduces 0, 1, 2, or 3 organisms at a time. Assume they're asexual and reproduce only ...
46 views

### Manipulate excel file and plot

I have a number of .csv files that have the following format: I want to do the following: ignore the last two rows sort all the remaining rows w.r.t the 2nd ...