Tagged Questions

Questions about the form and content of output returned by Mathematica for a given input or function application. This can include specific differences produced by older versions of Mathematica.

0answers
23 views

How to extract the certain variable from output of coding

Good day, Can anyone help me how can I extract the certain value from the output after run the coding. The output of the coding, ...
0answers
47 views

Mathematica, stop sorting my output! [on hold]

I'm trying to get some output from Mathematica / WolframAlpha, but it's coming out in a useless format. Mathematica is, for some reason, sorting my output. Below is the output from my function and ...
0answers
30 views

Show full output for a matrix in mathematica [closed]

I have a very large rectangular matrix. It is an incidence matrix that I obtained from a bipartite graph data. I want to view the whole matrix. It only shows SparseArray[...] and specifies dimensions ...
2answers
142 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, ...
1answer
110 views

Why do I get the Null when I evaluate Print[x] // InputForm? [duplicate]

When I execute: Print[x]//InputForm I get a Null at the last line of the result. This is an example shown in the ...
2answers
127 views

How to plot an Eddington-Finkelstein diagram

I need to plot the same thing as what is shown on the third picture of the site below (sorry, I'm unable to poste that picture here) : http://ion.uwinnipeg.ca/~vincent/4500.6-001/Cosmology/...
1answer
50 views

Suppress “From KernelObject” when printing in ParallelDo

Is there a way to avoid printing "From KernelObject[n, local]" when Print[] or WriteString[] is used in a parallel computation? ...
0answers
54 views

Mathematica does't print the number 10 for small numbers on command line

I'm running this code from commanline using mathematica 10.1 #!/usr/local/bin/MathematicaScript -script vec = Table[10.0^-v,{v,0,10,1}]; Print[vec]; and the ...
3answers
224 views

What does the symbol Continuation do?

There is a symbol Continuation (residing in the System` context). There is no usage or documentation for this symbol. ...
0answers
42 views

Stop front-end from auto-scrolling notebook to show output [closed]

I have made a simple "percent complete" output to track my For loop, where I incrementally print values and then delete the output right before printing the next ...
0answers
42 views

Out[ ] cells suddenly begin with newline

This is a "feature" of Mathematica that persists through several versions. What happens: Mathematica experiences some internal hiccup and from then on starts every Out[ ] cell with a newline, which is ...
1answer
121 views

How to export a 3D circle as a single piece PDF vectorial object?

I need to export a circle drawn in 3D with a specific point of view to a PDF file. This is easy to do. However, the exported circle is made of tons of non-connected small bits. I need the whole ...
1answer
103 views

Can I improve this sloppy code used with Manipulate?

I'm not an advanced user of Mathematica, and yet I managed to get the Manipulate command work to do something interesting. The problem I have is that I have the ...
1answer
50 views

Change of parameters on ouput graph

I have generated the graph, but i lost the settings, i would like to make the Plotmarkers slightly bigger. Is there anything to do this without redoing the computation? Like Show[%1,PlotMarker->{dot,...
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45 views

Periodic boundary condition trick

I'm plotting a curve on a compact space which is having periodic boundaries on the left and right parts. Currently, the code I'm using is working great, but I'm wondering if there's a simpler and ...
1answer
53 views

Small glitch with EdgeForm and PlotRange

I'm experiencing a small problem with the edges of a square, if the PlotRange has the same size as the square : ...
2answers
100 views

How to remove parts of a curve?

I have a curve that have some unwanted parts. How can I remove them ? Or how to constraint the curve to a specific region ? Here's a MWE that shows the problem : ...
1answer
74 views

Frame labels without a frame?

Is there a way to add labels to a 2D plot, without the Frame ? Here's a MWE which shows a simple graph with four labels around its frame. I need to remove the frame, but keep the labels. Is that ...
1answer
41 views

Help with limiting output

I wrote this program on Mathematica (which I am very new to): ...
1answer
185 views

Why is Reap result nested? [closed]

A minimal (toy) example for my question: i= 1; Reap[Do[Sow[i = (i + 1)^2], {4}]] (* {Null, {{4, 25, 676, 458329}}} *) I presume the entire result is a ...
1answer
60 views

How to rescale a NDSolve curve to fit in a box?

I'm numerically solving some differential equations and the 3D curve I get has a very complicated shape and size that cannot be predicted from the initial conditions. I need to rescale the whole ...
3answers
97 views

How to change random values in manipulate?

I made a Manipulate box that is working very well, using lots of random numbers. I would like to add a button to "reset" (i.e. to change, randomize, or reselect) all the random parameters. Here's ...
2answers
85 views

A way to show all the 3D curve, with view still centered on {0, 0, 0}

I frequently have this graphics output problem : I draw a 3D curve using NDSolve, and depending on the initial data, there's no way I could predict the shape and ...
2answers
236 views

Plotting a complicated 3D wave on the surface of a sphere [duplicate]

Suppose you have a vectorial wave described by a complicated function of time and cartesian coordinates $t$, $x$, $y$ $z$ (very simple example below) : ...
1answer
51 views

Chop not working [closed]

I am running a function that has a large output in matrix format with small, complex parts added to the numbers- basically a rounding error. I am trying to use Chop to obtain use-able results, but ...
0answers
34 views

How to output values created by a nested for loop into table/ matrix form

I have successfully created the values i want, however i need to form them into a table. I need to create this table one row at a time, so the first 24 values would be the the first row, values 25-49 ...
2answers
41 views

How do I Define a Module Which Displays Some Graphics and Returns Some Data?

I want to bundle some actions of a task in a module to call it a few times. The task shall display some Graphics and it shall return some data (as a list). But I can't do that (it would have been ...
3answers
116 views

How to display elements of a product in a certain order [duplicate]

I have several product states, represented by a string of variables - for example, "ABC". I'd like to multiply this state by a constant, call it J, to which I don't want to pre-assign a value. Using J ...
1answer
72 views

Problems with Displaying Output for Summation

Consider the following code. ...
2answers
270 views

How to define variable “Rainbow” curve colors?

Firstly, I'm not asking about blending a color gradient on a curve. I would like to make the curve color uniform on all its lenght instead, but the color should change dynamically while we slide a ...
3answers
207 views

How to apply a color gradient to a Rectangle primitive? [duplicate]

How can we apply a color gradient (say "Rainbow") to a Rectangle primitive ? Of course, I searched the documentation : http://reference.wolfram.com/language/ref/Rectangle.html, and also the site : ...
0answers
84 views

Exporting 3D graphics in vectorial form

I often have to export a 3D graphics to a PDF file, to be opened and edited with my favorite vectorial application ('m using Intaglio, on OS X). I frequently get two problems (see the picture below, ...
1answer
101 views

How to prevent extrapolation in Manipulate? [duplicate]

How can I limit the time slider to the NDSolve solution range in a Manipulate box, so no extrapolation is used ? More specifically, here's a stripped down version of my Manipulate code which shows ...
1answer
181 views

How to add an outline around a closed 3D surface?

I would like to add a black outline (silhouette) all around a closed surface. Here's a MWE code to work with : ...
1answer
178 views

How to turn off depth sorting of 3D curves for Manipulate?

Is there a way to turn off the default depth sorting of curves in a 3D output of several complicated curves ? Currently, I suspect that depth sorting has a very strong impact on performances on my ...
1answer
34 views

Distribute Conjugate over expression?

I have this output: Conjugate[Subscript[a, 0][x] + t^\[Beta] Subscript[a, 1][x]] I want to distribute Conjugate: ...
1answer
188 views

Changing the Rotate behavior of a 3D graphics

Is it possible to change the way Mathematica rotate its 3D output graphics, when the user uses the mouse ? Here's a MWE to work with : ...
2answers
139 views

How to make the mesh to rotate with a surface in Manipulate?

Here's a Manipulate code to show a particular 3D surface, rotating uniformly in time. The point of this Manipulate box is to show that the surface do indeed rotate like a solid, so I can't "cheat" ...
1answer
91 views

Ugly rendering of curve with ParametricPlot3D and NDSolve [closed]

I frequently have this rendering problem when I plot a complicated curve with ParametricPlot3D, found by solving a differential equation with NDSolve : The curve should be more "regular" (it is ...
0answers
39 views

How can I change the way a Head is printed on the notebook? [duplicate]

Consider the following simple example: Interpolation[{0, 1, 2, 3}] Despite the FullForm of the output of this expression is ...
1answer
58 views

Checkbox in manipulate not properly working

This question is related to another question of mine : How can I add a checkbox to a Manipulate expression?, but I'm still unable to make the checkbox to work properly. Here's a MWE code, from my ...
0answers
42 views

Is it possible to make a standalone OS X app from manipulate?

I'm wondering if it's possible to make a standalone app from a manipulate box. I mean a small app that do exactly what the manipulate box is doing in Mathematica, but without Mathematica. In other ...
1answer
69 views

NumberForm pesky warning from Manipulate

I'm using the NumberForm command inside a Manipulate environment, and in some special cases Mathematica gives a pesky and mostly useless warning message : NumberForm::sigz: In addition to the ...
1answer
34 views

NonlinearStateSpaceModel/OutputResponse gives doubled outputs

I want to simulate a pendulum or rather the controlled system. But NonlinearStateSpaceModel or the OutputResponse gives weird ...
2answers
65 views

styles and print and output

I know I can use styles to change how the result of Print looks. But I have a case where I use Print to display some ...
1answer
27 views

Trouble interpreting output quantities

I'm trying to use Mathematica to get a numerical answer for a physics problem. I define a function $V$ as the sum of three quantities divided by vector norms: ...
1answer
396 views

Wrong result of simple math calculation. Is it possibly a bug of the program? [closed]

I encounter the following issue accidentally (shown in the screenshot) which is very odd to me. The output[4] and [5] is obviously wrong. But with the input value of 991.91, it turns out to be right (...
1answer
66 views

What's the meaning of <<19>> in the result [duplicate]

Try the following: ...
1answer
61 views

How to export a list of numerical data to a file in the terminal?

I have a very simple program that export a list to a data file in table form. ...
1answer
59 views

Annotating output without changing the value [duplicate]

I like to annotate output, using something like the following: ...