0
votes
1answer
32 views

Sorting matrices by their norms

I have a matrices A and their Norms(Matrices B). I want to rank Matrices A based on their Norms. From smallest to highest Norm
-1
votes
1answer
33 views

Comparison Graph

I want to draw the combine comparison graph of the following four sequences (note that two are approximatly equal), each one have different colors and lables etc AK ...
4
votes
1answer
72 views
+50

Why isn't LowPassFilter working for these parameters?

First I define a function, just a sum of a few sin waves at different angular frequencies: ...
0
votes
1answer
33 views

Visualization problems

I am visualizing 1-dimensional curves that are periodic. Due to periodicity, extending the domain should result in the curve being retraced and therefore remaining unchanged. This doesn't seem to be ...
2
votes
3answers
122 views

Solving my graduation exam geometry problems with Mathematica [on hold]

How capable is Mathematica when it comes to typical school geometry problems? Is there a way to throw constraints at it and get it to spit out a solution? Here are two geometry problems from my ...
0
votes
0answers
17 views

Easier way to input Dynamic matrix?

I've only been using MMA for a month, and I'm working on making interactive Linear Algebra examples that will be used online for students. Right now, for inputting numbers into a matrix, I've been ...
2
votes
2answers
80 views

Finding zero of nonlinear simultaneous equations [closed]

I'm trying to find the zero of nonlinear simultaneous equations defined in myfun1 and myfun2: ...
0
votes
1answer
41 views

Transforming Determinant to Polynomial Expression

I have determinant which equals zero. In determinant, i have x expressions. i want to transform the determinant to polynomial expression so i can solve that with mathematica. Note : Apologize for ...
0
votes
0answers
34 views

Show multiple RegionPlot3D Plots and with certain points rendered

I have the following problem. I have defined several 3D regions through RegionPlot3D. Now I want to add points. But somehow the points are not displayed correctly, ...
0
votes
0answers
29 views

Henon Map Equation Trekker Error

I am trying to make an Equation Trekker for the Henon map in the following way: ...
-1
votes
1answer
71 views

Problem with a chemical optimization problem [on hold]

First of all, I want to say that I'm quite new to Mathematica. I searched a lot on this site to learn how to solve my problem, which this is the problem of my life! I want to minimize a function. It ...
0
votes
1answer
33 views

How can I get the differences of all elements of list?

I want to get the difference of all elements of a list for example: $L=\{1,2,3,4,5,6\}$ for any $i$ and $j$ $\in L$ return the differences, for example for the first element $1$ we get the difference ...
0
votes
0answers
25 views

Elastic Distortions in Mathematica

I want to apply elastic distortions to characters as follows using Wolfram Language: ...
0
votes
0answers
21 views

Drawing Arrows to connect points from two separate data sets representing coordinates

I have 2 separate excel files that I'm importing into Mathematica. Each excel data file has numerous rows of data containing a coordinate of three columns (x,y,z). I have been able to plot these ...
1
vote
1answer
63 views

Weird SeriesData behavior?

I was trying to calculate the determinant of a matrix whose elements are truncated series. As a result I obtained an expression like this: ...
0
votes
3answers
46 views

Derivative of a 2D Interpolating function

I cannot find a way to obtain the partial derivatives of a 2D Interpolating Function obtained with ListInterpolation. I didn't find anything useful on the web. Any ...
3
votes
0answers
23 views

High CPU load for dynamic classification

I encountered some issues with extremely high CPU load when I tried to classify live images (using Dynamic and CurrentImage[]). ...
1
vote
2answers
135 views

How to do a parametric histogram?

Is it possible to draw a spectral histogram from two random sets ? More specifically, I have these two random functions (fmin, ...
0
votes
0answers
41 views

Eigenenergies of a symmetric tridiagonal matrix

we consider the time independent Schrodinger equation (TISH) where we want to calculate the first few instantaneous eigenergies. Discretizing space we get : So we can rewrite the TISH as, (where ...
0
votes
0answers
46 views

How to Extract Continuous .png Graph by Constant Piecewise Velocity? [on hold]

Condition: inverse problem in the extraction of continuous graph in time-potential data where points are distributed with constant piecewise velocity (artifact) Support 1: the constant piecewise ...
3
votes
1answer
264 views

The unexpected behavior of FindMinimumCostFlow?

Bugs(the fourth and fifth behavior) is present in V10.4.1 I'm at a loss to understand the behavior of the FindMinimumCostFlow function. Here are a few cases I ...
-1
votes
0answers
34 views

How to find vertice by two angles and side? [migrated]

I know 'alpha', 'betta', length 'c', vertices: 'A' and 'B' How can i find the 'C'?
0
votes
0answers
25 views
0
votes
1answer
35 views

2d numerical integration

I'm trying to get a numerical solution for a double integral: ...
1
vote
2answers
91 views

Making a 3D plot of $x\,y$ that looks like the one I get from Maple

I made a 3D plot of $x\,y$ in Maple: plot3d(x*y, grid = [10, 10], color = "Red", style = pointline,axes = framed) How can I make the same graphic in ...
1
vote
1answer
39 views

RegionPlot with rank constraint

I am trying to plot the feasible region of a rank constrained semidefinite program shown below: The Mathematica code that I am using is the following: ...
4
votes
0answers
20 views

Pre-processing and deconvolution of CLSM images

I have some confocal laser scanning microscopy data sets that I want to binarize for further analyses. Due to the fast bleaching dyes and the general scanning duration we established a setup which ...
2
votes
1answer
28 views

How to get Quantity to collect like terms?

In Mathematica numerical terms collect when their variables are equal. .2 "SERC" + .7 "SERC" (* 0.9 "SERC" *) However, numerical ...
0
votes
0answers
24 views

Nested parameter selecting in Manipulate

I have the following code, stripped down from the original to the bare essentials: ...
-3
votes
0answers
47 views

Mathematica Bug with version 10.4.10 with OSX [on hold]

I have upgraded mathematica to 10.4.10 and OSX El Capitan version 10.11.4. On my desktop I use linux and mathematica version 9. I have a notebook on the desktop that run just fine ( I am solving ...
0
votes
1answer
269 views

Extracting filter coefficients from a transfer function

What is the correct way to extract coefficients (in a form I could use in RecurrenceFilter) from a filter which I have represented as a Mathematica transfer ...
2
votes
1answer
298 views

Numerical comparisons of matrices

I have a matrix which should be equal to a null matrix. However due to the numerical precision, a brutal equality test with a matrix initialized with zeros does not work. How should I perform the ...
0
votes
1answer
31 views

Finding the magnitude a matrices [on hold]

I need some help. I have a list of 3 x 3 matrices of real numbers.I want to find how close each of these matrices are to a {{0,0,0},{0,0,0},{0,0,0}} matrix. Any suggestions to a method algorithm or ...
0
votes
1answer
95 views

Implementation of a Hanning filter

I'm implementing a package for in-house signal processing. I wrote here a quite trivial function implementing a Hanning windowing of the signal. ...
8
votes
3answers
327 views

How to remove a line of a matrix if not all elements are numeric?

I have a matrix a n columns and m lines. I'd like to efficiently remove the lines that are not entirely composed of numeric ...
0
votes
0answers
45 views

Detection of blurry object

I have a series of very similar images (8bit gray-scale, png) where I track an object. The problem is that it is blurry and its brightness is comparable to the background. Below is the code how I am ...
1
vote
0answers
28 views

Naive question on ODE numerical solving and periodic initial conditions

I have a second-order nonlinear ODE for which I would like to find a numerical solution, with periodic initial (boundary) conditions. Can this be done directly with ...
3
votes
1answer
70 views

Calculate area of apple from image

I want to find area of following apple I want to do something like this: define boundary region of apple apple=... then find area using only ...
-1
votes
0answers
20 views

Expectation of Rician Distributed Data [on hold]

As you can see in the attached file, I'm trying to obtain the expectation of some Rician distributed symbolic data. However output and input are the same. I guess that happens because Mathematica is ...
3
votes
1answer
237 views

Strange behavior of StringReplace, same expression evaluated differently

I have two expressions which are exactly same: StringReplace["in the next few days", {"in" -> "ffdsf"}] and ...
-1
votes
0answers
26 views
0
votes
0answers
15 views

Interpolation function inside a numerical integral

Hello all and thanks in advance for your comments, I will be brief to explain my doubt. If you need any more information, please ask me. I have an interpolation function which comes from the ...
2
votes
1answer
52 views

Using Associations and Pattern matching in numerical functions broken

It looks like the very young feature of pattern matching (/replacing) within Associations (http://mathematica.stackexchange.com/a/119542/6804), with or without ...
2
votes
1answer
40 views

Place Legend above Epilog

I am currently struggling with a problem which I haven't seen answered anywhere else. I want to make a ListDensityPlot graph in which I need to draw some ...
5
votes
2answers
113 views

Plotting an equation describing a Joukowski airfoil

I am trying to plot an equation that will give me a Joukowski airfoil and am having trouble getting any results. The equation that I am using is as follows: ...
5
votes
2answers
54 views

Association matching still not working perfectly?

Up until 10.4 you could not match on internal Association structure at all: http://mathematica.stackexchange.com/a/119542/6804 Now you can, but it seems flawed ...
4
votes
2answers
295 views

How to make Mathematica save all open files, or automatically ask to save each file when closing

Here is the scenario: You have number of open notebooks at the same time, and made some changes in all or some of them but have not yet saved the changes. Mathematica does not have something like ...

15 30 50 per page