# All Questions

205 views

### Cleaning up a List of HTML Data to Render Usable Information

I am using Mathematica to scrape information from webpages. To get file information, I am gathering plain text that is enclosed by <tr> and ...
111 views

### FEM Solution desired for “Plate with orifice” deflection: Application of Boundary Conditions and use of Regions

I found the deflection of an orifice plate (circular plate with a hole) subject to uniform pressure using Mathematica's NDSolve functionality. The plate is fixed at its outer circumference and is ...
77 views

### How to define UpValues about the derivative of NBSpline when the length of knots is unknown?

Description In the book “Programming in Mathematica” 3rd by Roman.E.Maeder, the author gives a topic about A new Mathematical Function in section 8.4. For instance, for the following formula： ...
55 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 ...
210 views

### Storing Variables in “Loops” and Point Plotting

Given the function $y=\sin x$ defined over the region $-\pi \leq x \leq \pi$, I need to implement a "do loop" such that I sweep over 100 or so points $-1 \leq y \leq 1$ and find precisely the two $x$ ...
83 views

### Use of Ito's lemma in ItosLemma.m (or any other method in Mathematica)

This is a follow-up question on this question: Use of Ito's lemma in ItoProcess My problem is to find some method how to use Ito's lemma in Mathematica. As an example: How can I apply Ito's ...
93 views

### Where can I access documentation for old versions of Mathematica?

Some documentation of functions available in old versions of Mathematica (and old packages) is available online, e.g. http://reference.wolfram.com/language/Combinatorica/ref/Vertices.html Is there ...
161 views

### Why are dictionary keys reordered upon JSON import?

After importing a JSON file, Mathematica changed the order of the fields. For example, I downloaded a sample file from: http://api.openweathermap.org/data/2.5/find?lat=55.5&lon=37.5&cnt=10 I ...
145 views

### Format google places JSON output

I'm have some trouble formatting the Output of a 'Import' request. I get this as a return of a google places API request: ...
275 views

### Plotting random circles in a square

How can we draw 20 circles which have random radius in a specified range, with random positions. All centers must be in a square with side=10 (for example centimeter): every overlapping between any ...
97 views

### How can I customize the tooltips on a ContourPlot?

I have a contour plot and I would like to have finer control over the tooltips that are displayed. For the sake of argument, suppose that I have the following plot, ...
158 views

### Efficient way to perform local Otsu thresholding on image

I have images of cell nuclei that have locally varying intensity distributions. Therefore, I need a robust local threshold algorithm. LocalAdaptiveBinarize works ...
76 views

### Problem with MeshOrderAlteration to create a 2nd order ElementMesh

After working on this 2D domain, I'm trying to reproduce the same ideas to create a mesh of a sphere composed of QuadElement, instead of more simple and common ...
170 views

### How do I write subscripts in the middle of a string? [duplicate]

As stated in the tile, I want to have a subscript in the middle of a sting, but StringJoin does not allow ...
313 views

### Numerical integration's speed

Consider this numerical integration of Bessel function: Do[NIntegrate[BesselJ[2, x], {x, 0, 10000}], {i, 1, 100}] // AbsoluteTiming {4.033403, Null} This is ...
201 views

210 views

### How can I selectively trigger computations in Manipulate?

I have a Manipulate that uses RandomVariate and Random that I would like to have redraw and ...
316 views

### How to superimpose contour lines on transformed image

My goal is to superimpose contours lines or contour plots on distance transformed image.
129 views

### How do we make a negative integer out of a string of a negative number and vice-versa?

Negative numbers are not taken into consideration by mathematica's built-in functions. FromDigits["-2"] Gives me this message: ...
149 views

### How to open directly the help/reference window from a notebook

I'm used to do ??symbol when I want the reference for a given symbol, then I click on the >> arrows to open the help window. Would it be possible to ...
331 views

### Replacing values above a threshold with 1 [duplicate]

I have a list with some values and I want to replace a value which is greater than 1 with 1 otherwise keep the value. In this case 10562: ...
134 views

### How to Override the Head of a Symbol

I was wondering if it is possible to override the head of symbols/operators. As a motivating example if I run: Then Ket will be returned. But lets say I want Bob to be returned instead of Ket. Is ...
206 views

### Ugly plots when printing notebook to pdf

One image is worth one thousand words, so: Question: At what options should I be looking, so that what I see in my notebook is what I get in my printed pdf ? Here is the code I'm using: ...
333 views

### Different MeshStyle for different functions

By using Plot command I want to get one curve in form if circles and other like a solid line. ...