# All Questions

636 views

### Area or NIntegrate curves defined by points?

Is there a convenient method to compute the AUC (Area Under the Curve) metric that quantifies a Receiver Operating Characteristic (ROC) like shown here? The data used to build the ROC are just ...
4k views

### Mathematica code for Bifurcation Diagram

At the moment I am trying to construct a bifurcation diagram of the iterative function $f(x)=$ $ax-1.1975x^3$. I've scoured the internet for pre-made bifurcation diagrams and found many (mostly of the ...
127 views

### How to hide inline Cells

By giving a cell the simple option CellOpen -> False, it can be hidden from view. But for inline cells (cell within a cell) this does not work. An option ...
136 views

### What exactly does GenerateConditions do?

Consider for example this strange behavior: Integrate[1/x, {x, 0, Infinity}, GenerateConditions -> False] (*0*) I'd also like to know the difference between ...
399 views

### Preventing Numerical value from being evaluated

I have searched stackoverflow (and comparable pages) for quite a while now (got redirected from there to this specialized stack), and I surrender. I am trying to evaluate an expression that is small ...
298 views

### Making a screen icon by Mathematica

Is it possible to make within Mathematica an image file to be used as a screen icon? Could you kindly give an example?
306 views

### How can I overlap image on Graphics3D at a specific position?

I make a Polygon with size of {width=0,length=50,height=30}; I want to overlap Image on ...
101 views

### How to evaluate the sum using values from the data being input

I have a problem in evaluating a sum using values from data I input. Suppose I have data = {1, 3, 5, 6, 8} If I want to evaluate the sum of my data (1+3+5+6+8), I ...
162 views

### LevinRule and SphericalBessels

I'm currently looking at a simplified problem that approximates another problem I'm looking into. In this simplified problem I at least have an analytic integrand and can easily provide all info on ...
614 views

### How do I reverse the axis in ParametricPlot?

In astronomy, right ascension is usually plotted with positive values that increase from right to left. I have seen discussions of successful and unsuccessful attempts to reverse the order of an axis ...
1k views

### Combine multiple PDF files into one document

I have multiple single page PDFs I'd like to join together into a single file. (Obviously I mean the file format and not the probability distributions here!) I'm aware of free online services such as ...
209 views

### Cursor Position / Insertion Point

Is there a way to access (or even set) the cursor position in a Notebook? (By Cursor I refer to the keyboard input postion, or "Insertion Point". For the Mouse we have ...
485 views

### How does Mathematica decide that Log[2,8] is integer?

At school we learned that $\log_b(x)=\log(x)/\log(b)$, which is implemented in Mathematica as Log[b, x], but the results are different. ...
227 views

### How to generate a formula of a graph with three key points

I have three key points on a graph. How do I find out what the formula for this graph would be? The points are: (3,0) (5,2) (7,6). It is known that the graph will be a quadratic. Thanks
873 views

### Solving a system of nonlinear equations self-consistently

I am trying to solve a set of three non-linear equations in Mathematica. I need help with them. The Mathematica code (in plain text format) is attached below. If you copy & paste the code below ...
244 views

### Changing some stuff to Kruskal's Algorithm

I'm trying to modify this algorithm: http://demonstrations.wolfram.com/ConnectingTownsUsingKruskalsAlgorithm/ The thing is that I want to receive a Graph (declared outside, with all its vertex, edges ...
364 views

### How can I use “Save as (html)” and still render code as text?

I use notebook "Save as ... (html)" to convert my .nb to web. Formulas and plots get converted to images, which is fine. But code (input cells) get converted too into images. I would like people to be ...
293 views

### NDSolve event handler Question [closed]

I'm trying to plot a ball falling, hitting the ground and coming back up. without air friction, the equations for the system would be ...
891 views

### How can I get exactly 5 logarithmic divisions of an interval?

I'd like to get exactly 5 divisions from x to y on a log scale. Can FindDivisions do this?
589 views

Looking at the plot below, how can I know what colours made the Hue shade? ...
271 views

In building an assignment for my class, I would like set up an InputField, where they will enter a function. I was wondering if there was a way to "continuously" check if their function is being ...
224 views

### How can I set the axis for ScalingFunction in a BarChart?

Why is the scaling function being applied to the wrong axis? Here, the log ticks are on the Y axis, but they should be on the X axis: ...
201 views

### Why are my FrameTicks not working on ArrayPlot?

For some reason the ticks don't work on this: ...
519 views

### No result from DSolve

I don't get any answer when I evaluate the following expression: ...
132 views

### Specifying form in MemberQ

This seems like a very simple question, the answer to which should be obvious to me. So I won't be offended if this question is closed. But I'm having trouble figuring out the answer. I would ...
518 views

### How to transform the result of this integral into powers of $\sin\,x$?

I want to calculate the integral $I = \displaystyle\int{\cos ^5 x\, \mathrm dx}$. Using the variable $t = \sin x$, I get $$I = \sin x - \frac{2}{3}\sin^3 x + \frac{1}{5}\sin^5 x + C.$$ With ...
52 views

### Custom Magnification Setting [duplicate]

Possible Duplicate: In Mathematica 7 for Windows, is it possible to use custom GUI magnifications? I am able to use a custom Magnification by setting ...
472 views

### Alternative Math Font

Are there other fonts that can be used for mathematical symbols? I have noticed, that choosing another font (via Stylesheet) does not change the math font (e.g. for greek symbols). Symbols will just ...
163 views

### How to set the timeout of the preemptive link?

I apologize if this is a RTFM question, but I couldn't find this in the docs. How can I set the timeout of the preemptive link? For example: ...
2k views

### Making fractals with Mathematica

I recently saw this post on math.stackexchange and was curious as to how to generate the image in Mathematica. I tried the following naive approach; however, it is extremely slow. ...
149 views

### How to rotate Graphics3D into CDF? [closed]

I make Graphics3D with Polygons, before deploying then to CDF; In my notebook, it rotates ...
92 views

### Plot with Legends and Markers [duplicate]

Possible Duplicate: Creating legends for plots with multiple lines? I must say I have seen a couple of similar questions but they were not addressing my specific problem. Level one: I'm ...
394 views

### ListPlot filling not appearing when point is out of range

In a non-joined ListPlot one can specify that a filling line is shown for each point: ...
136 views

### Sorting list with variable

I want to sort (or sortby) the list. List contains uninitialized variable m and I can assume that m is a Natural number that is much larger then any constant. ...
416 views

### Using 'Reduce' to solve a set of inequalities, specified by a list

I have a two lists $LHS$ and $RHS$, both of size $n$. I want to solve a system of inequalities of the form: $$LHS[1] \leq RHS[1]$$ $$LHS[2] \leq RHS[2]$$ $$LHS[3] \leq RHS[3]$$ $$\vdots$$ ...
833 views

### FindMaxValue and FindMaximum - how to find GLOBAL maximum and not just LOCAL maximum

I will not be able to provide a simple minimum working example here as this seems to be very specific. I have an interpolating function which I substituted into a PDE and then plot said PDE at a ...
1k views

### Clustered and Grouped Bar Chart in Mathematica v8.0

How would I create a clustered and grouped bar chart that looks like this (which was painstakingly created using Excel)? I have seen examples for Mathematica v6.0 but none for Mathematica v8.0. The ...
318 views

### Vector Analysis: Why are the Grad, Laplacian and Div being evaluated to zero

For the non linear partial differential equation below, why are the Gradient, Laplacian and Divergence being evaluated to zero despite using the VectorAnalysis ...
2k views

### Does Mathematica v.8 (or will v.9) run on Windows 8 systems with ARM processors? (like the MS Surface Tablet)

Today I was reading that the Microsoft Surface RT is available for pre-order. (For the curious, click here.) I know the version of Widows 8 that runs on x86 processors should be compatible already ...
738 views

### How to speed up Minimum Spanning Tree algorithm?

How to speed up MST algorithm? I work with graphs and I have adopted Prim's algorithm for my needs, from here. The graphs which I use are very dense (number of vertexes: $V=500$ and every vertex is ...
125 views

### Generating continuous products or sum

This is kind of a continuation of this question. I want to automate these 2 steps on Mathematica once I give an integer $N$. generate a list of variables $\{a_i\}_{i=1}^{i=N}$ then for some ...
957 views

### Strategies to solve an oscillatory integrand only known numerically

I have an integrand that looks like this: the details of computation are complicated but I only know the integrand numerically (I use NDSolve to solve second ...
198 views

### Clearing distributed definitions from remote kernels

The documentation shows the following example to "Remove a distributed definition..." Oh, course this doesn't work without redefining the function prior to re distributing the definition. The ...
822 views

### Generating a vector of dummy variables

So I'm the situation of needing analytical solutions to a family of equations of the form Ax=b, where A is an nxn matrix. I've written a function that does what I want, but I'm currently using a bit ...
1k views

### Reshape vectors exactly like in MATLAB

This gives a 64×1 column vector in Mathematica: ...
236 views

I'm evaluating Wolfram SystemModeler and I want to explore its capabilities together with Mathematica. Unfortunately, I don't manage to get WSMLink working. In the notebook I'm using I typed ...
338 views

### Custom (physics) dictionary for mathematica (used for word-processing, spell checking)

Is there a dictonary available that contains physics slang like spinor, vacua, gauge etc.?? How would one integrate such a file (or a simple text file containing the words) into the front-end without ...
801 views

### Examples of (well coded) packages using custom notation

Which packages do you know of, that have the following properties: using custom notation (for input AND output would be preferable) well coded & designed (from your subjective perspective!)