1
vote
2answers
176 views

How do I feed data points into an equation to solve NUMERICALLY?

I start with this equation and solve it numerically for $z(x,y)$ in the range $1 < x < 5$ and $1 < y < 5$: $$ \frac{3}{xyz} - 2x - 3y - 5z = 0 $$ Then using the data points of $z$ above, ...
2
votes
1answer
81 views

Insert large amount of data in HSQL

I create HSQL database with one table ...
0
votes
0answers
32 views

Mathematica copies extra characters at the end of text blocks

This is something I've been noticing for some time, but I haven't found any mention of this online, so I'd like to know if it's been seen before, if it is a (known?) bug, and whether there exist ...
0
votes
0answers
30 views

Manipulate in modal mode with data return

I like to use Manipulate[] in modal mode. That means the next cell should be evaluated after Manipulate[] has finished!
2
votes
0answers
23 views

How to disable half-hiding output, when the corresponding input cell is modified

I think it has become less easy to compare the new output, now that the output font color turns gray as soon as something is modified in the input cell. Is there any solution?
2
votes
3answers
83 views

Solve equations within range and plot [duplicate]

Hi I have these pair of equations to solve: $$ 1 - 3 x y = 5 z - 2 x $$ $$ y = 7 x z - \frac{z}{x} $$ I want to eliminate $z$ and plot $y(x)$ within the range $-2 < x < 2$ and $-2 < y ...
4
votes
1answer
64 views

How to define a formula in FormulaData?

I am looking for a way to manage frequently used formulas in my research, in a organized way in Mathematica. It appears to me that using FormulaData would be a ...
1
vote
3answers
120 views

When NSolve fails due to a differential situation?

c = 1.1111; y[x_] = x - c Sin[x] NSolve[y[x] == 0, x] The method has procured no result. Successive derivatives were plotted in an attempt to fix the problem. ...
1
vote
1answer
66 views

How can Mathematica help me to find a real radical expression for roots of this polynomial?‎

The polynomial P(x)=x^‎‏4‏‎-‎‏4‏x^‎‏2‏‎-‎‏2‏x+‎‏1‏‎ has ‎‏4‏‎ real roots (this can be clearly checked by plotting). But solving ...
0
votes
1answer
48 views

Plotting a several variable complex valued function

Consider A function $f:\mathbf{C}^2\rightarrow \mathbf{C}$ defined as $$f_{\alpha, \beta}(z,w)=\frac{\alpha}{z}+\frac{\beta}{w}$$ where $\alpha$ and $\beta$ both are complex number. I want to plot ...
31
votes
5answers
4k views

How to ask Mathematica to imitate Andy Warhol's pop-art painting?

I tried to ask Mathematica to imitate Andy Warhol, let it convert a Marilyn Monroe's portrait looks like Warhol's world famous pop-art painting. However, the result shown below is far from ...
0
votes
1answer
52 views

DateListPlot - ToolTip

I would like to plot some data in time and am trying to format it so that tooltips on mouse over gives the date and a value. Something of the form ...
5
votes
1answer
78 views

How to obtain sheared text label effects?

How to make the text labels of 3D plots look always like coplanar with the specific axes planes no matter how the viewpoint/view angle changes? Here is an example of such effect:
0
votes
0answers
112 views

Cannot install prebuilt cddmathlink on mathematica

I'm trying to use some functions from cddlib in Mathematica. I downloaded the prebuilt file cddmathlink2 and cddmathlink2gmp ...
9
votes
0answers
38 views

$Path hijacked by PacletManager?

Summary: Since Mathematica version 6, the PacletManager seems to have engineered an escalating hijack of the $Path variable. Add-on packages need to have a ...
0
votes
1answer
57 views

Multiple ListLogLogPlot from two data sets

I am trying to show the full plots from two set of data on the graph, but as can be seen the lower limit of one plot is chopped off. How do you get full view of both plots, with x minimum placed at ...
2
votes
0answers
39 views

Derivatives with respect to Cartesian coordinates of functions in spherical coordinates

This seems to me to be a common task, and the more surprised I was to not have found much on this. Suppose I have an expression f in spherical coordinates ...
0
votes
1answer
63 views

Solving a linear system in three unknowns [duplicate]

solve[{2 x + ay - z, bx - 4 y + z, -x + y} == {10, -30, 20}] $$ \begin{array}{lcr} 2x + a\,y - z & = & 10 \\ b\,x -4y + z & = &-30 \\ -x + y & = & 20 \end{array} $$ ...
1
vote
1answer
65 views

How to set restrictions in Manipulate parameters?

I´m trying to insert the typicall 3 variables for probability, with the restriction x+y+z=1 How can I insert this values in a Manbipulate I try ...
3
votes
2answers
158 views

Most convenient way to set legend marker size?

If I add a legend using Legended[..., SwatchLegend[..., ...]] then I can explicitly set the legend marker size using the ...
0
votes
0answers
36 views

Graph embedding and edge weights [duplicate]

Does functions like GraphPlot take in to account edge weights in case of springelectrical embedding? In case of spring electrical embedding I expect the vertices connected by heavy edges to be pulled ...
1
vote
1answer
91 views

General F statistic and p value in LinearModelFit

Many statistical packages provide a "F statistic" and the corresponding p value in their output of a multiple linear regression. I don't find that in the parameters of the Mathematica function ...
4
votes
1answer
61 views

WindowSize error message when saving Graphics object as PNG

When I try to save a Graphics object using the menu File ▶ Save Selection As... or via right click and Save Graphic As... the Messages window pops up with the ...
0
votes
0answers
47 views

Problem solving a Fredholm integral equation

Based on the algorithm by PlatoManiac presented here Integral equation numerical solution with NDSolve I am solving a Fredholm integral equation with the following constants and arguments: ...
4
votes
1answer
119 views

How to use MKL from Mathematica?

MKL has a lot of functions. The question is: how to use these functions directly from Mathematica? Furthermore, Mathematica shipped with some MKL libraries, which is located in ...
-1
votes
0answers
55 views

NSolve transcendental equations

NSolve[{Cos[al] == R/(0.0496045\[VeryThinSpace]+ R), Cos[al + 0.1/R] == R/(0.05\[VeryThinSpace]+ R)}, {al, R},Reals] It is not solving, something missing here.
-1
votes
0answers
35 views

How can I get GridEmbedding for my graph? [duplicate]

I evaluate the following s = Import["hello.mat"]; t = GraphEmbedding[s[[1]], "GridEmbedding"]; and I get the these error messages GraphPlot::mthd: The value ...
2
votes
0answers
28 views

Use EvaluationCompletionAction to notify me only after long evaluation

Is it possible to use the option EvaluationCompletionAction to notify me (e.g. with a Beep[]) when an evaluation that took ...
6
votes
2answers
394 views

How to make a cleaner copy out of a blurry text image before OCR?

A cleaner copy can be obtained from a blurry original by using the level adjustment in Photoshop before going for a better OCR. The picture below shows an example. ...
2
votes
2answers
57 views

Convert polynomial to Chebyshev

I want to convert a polynomial in "standard form" to Chebyshev form. Here's one way to do it: ...
1
vote
0answers
37 views

NMaximize stops evaluating my function when run in parallel

I am trying to maximize the results of a Monte Carlo simulation with respect to some input variables. ...
7
votes
3answers
289 views

Show only the outlines of graphic primitives

I want to go from Graphics[{Red, Rectangle[{0, 0}, {1, 3}], Blue, Polygon[{{1, 1}, {3, 1}, {2, 2}}]}, Frame -> True] to I have rather clumsily written: ...
2
votes
0answers
28 views

How can I program my own financial indicator to be plotted in a TradingChart?

FinancialIndicator["ind",par1,par2,...], represents a financial indicator "ind" with parameters par1,par2, etc. All available financial indicators can be displayed with FinancialIndicator[]. Is it ...
2
votes
1answer
49 views

Evaluating $n$-th derivative of a function at a given point [closed]

I have a function defined as follows: \begin{array}{ccccc} g & : & [-1,1] & \to & \mathbb C \\ & & x & \mapsto & \frac{1}{(x-z)^k} \\ \end{array} where $k$ is a ...
1
vote
1answer
48 views

Make 2D vector norm graph

I have: List of points on 2D plane: pointsz0 = ToExpression@Import@"http://pastebin.com/raw.php?i=VQfP0HgB"; And I have some values in those numbers: ...
2
votes
1answer
55 views

Filling the area between two curves, only where and if the second lies above the first one [duplicate]

I would like to make a filling of a plot between two curved dynamically.I have two lines depending upon parameters. They may cross one another, and may not in different domains of the parametric ...
2
votes
2answers
104 views

How can I visualize an array of very small vectors spaced on very large grid? [duplicate]

I have data in the form points = {{1, 1, 1}, {1, 1, 2}, ...} vectors = {{2, 2, 5}, {2, 1, 7}, ...} Can somebody help to edit this data so I can ListVectorPlot a ...
1
vote
0answers
50 views

RSolve with simple initial condition

Suppose we have the following equation: $$ g_ma_m=r_ma_{m-1} $$ with initial condition $a_L=d$ and $L$ might be negative. The following command ...
2
votes
2answers
146 views

How to obtain a function from a implicit equation?

I have (60 - r/2) (70 - ca - r/2) - (60 - r/2 - ca + (4/25) (70 - r/2 - ca))*(70 - r/2)==0 Reduce[%, {ca}] But How could I obtain directly a function as ca[r_] ...
1
vote
1answer
58 views

Animated gif form parametric plot

I need to create an animated gif for the following function. ...
4
votes
2answers
102 views

Filling the empty space in RevolutionPlot3D

I'm wanting plot the solid of revolution from the area between two functions such as: $1\leq x \leq e$ and $1 \leq y \leq 2 + ln(x)$, doing something like: ...
3
votes
2answers
103 views

Apply Collatz Funtion to solve and print the answer

Good day to all! The objective of my task is apply the collatz function for a number x1 and print the exact number of iterations until ...
8
votes
1answer
106 views

Binary decision diagrams (BDD)

I would like to use Mathematica to help me simplify a given Binary Decision Diagram (i.e. pick the optimal variable ordering). I don't seem to find anything at all on the topic, although it is ...
0
votes
1answer
47 views

Combining lists in a matrix

So I have a list of data A={1.1,1.2,1.3,1.4,6.1} etc and B={2.5,2.6,2.7,2.8,2.9} I need to combine the lists into a matrix C ...
1
vote
0answers
37 views

Plot sphere not centered at the origin? [closed]

I can plot a sphere of the form x^2 + y^2 + z^2 = ...., but when I try: RegionPlot3D[(x - 1)^2 + (y - 2)^2 + (z - 3)^2 = 14, {x, -1, 1}, {y, -1, 1}, {z, -1, 1}] ...
3
votes
1answer
90 views

Why do I get Floor and Ceiling in my output despite my assumptions

I am trying to simplify the following expression. ...
0
votes
0answers
36 views

Is there a reliable way to compute the Hurst Dimension of a time series [duplicate]

The Mathematica function FindProcessParameter exists but may be unreliable: FindProcessParameters for Fractional Brownian Motion Returns Error Is there a simple algorithm that can be done in ...
6
votes
1answer
65 views

Image compose coordinate problem

Am I missing something or this is a bug? Why I get different results by just adding a bracket? ...
0
votes
0answers
34 views

FindProcessParameters for Fractional Brownian Motion Returns Error

I have the following data: ...
0
votes
0answers
19 views

System of Nonlinear equations with Gamma and Incomplete Gamma function

The next two nonlinear equations are cumulative ratios of a production system. The mathematical model includes two essential parameters (n, tau) that can be obtained by solving this system. I'm ...

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