4
votes
1answer
90 views

Mathematica package for supergravity and superstring theory

I am looking for a Mathematica package that can manipulate tensors for supergravity, string theory or M-theory. I am particularly looking for a package that can do spinor and Clifford algebra ...
8
votes
1answer
181 views

Why is SparseArray and InterpolationFunction always grayed out?

In the front end of Mathematica version 10, a new feature was implemented which dims output cells that no longer correspond to its input cells. So when you type ...
3
votes
1answer
81 views

What kind of object results from RegionIntersection function?

I'm trying to use RegionIntersection in a couple of Polygons. The polygons are the following: ...
3
votes
0answers
34 views

WSTP Callbacks into CDF

Essentially, what I am trying to find out is the limitation of the WSTP/LINK protocols in Enterprise-licensed CDF. Specifically, are any callbacks to the kernel from those protocols allowed in CDF , ...
4
votes
1answer
134 views

Mathematica 10 doesn't support path containing Chinese characters

I tried to import file in Mathematica 10 ( windows 7 system), the path contains some chinese characters. After holding ctrl+shift, and drag the file into front end. I got path like ...
3
votes
0answers
83 views

Software for effectively modeling gears

Are then any applications for effectively modeling gears in mathematica?
17
votes
1answer
1k views

Mathematica 10 funny bug / Easter egg?

I have no idea what is happening here. I'm using Mathematica 10. I mistyped "FriendNetwork" as "FriendsNetwork" and got a weird result: The option "FriendsNetwork" is not even listed in the help ...
1
vote
1answer
79 views

Ploting legends in contourplot

In Mathematica 8. Given this: ...
0
votes
0answers
28 views

Balanced n-ary Base Representation

This may be a repeat question, but I was wondering how one would implement the expression/calculation of a representation of a given number h in base balanced n-ary, where n>1 is odd. (For example, ...
5
votes
2answers
140 views

How to make Missing[] invariant for some functions without redefining them

Missing[...] "is a symbolic object, with no default evaluation rules defined." Missing data can be tagged and enables use of filters like DeleteMissing. So it's worthwhile to normalize various types ...
18
votes
2answers
575 views
+100

Mathematica 10 Notebook Fonts Look Bad

I've upgraded my home installation of Mathematica from version 9 to 10 today on a Windows 8.1 machine, and I'm getting a weird font issue - the fonts are not anti-aliased, and look unbalanced and ...
6
votes
0answers
47 views

Issuing user-defined messages takes a long time (Message is slow)

Issuing messages takes a very long time in version 9 and version 10. Can others reproduce this? Is there a fix? Update: This is slow only when using the front end, but not when running the kernel ...
4
votes
1answer
151 views

BoxWhiskerChart - 10-90th percentile instead of min - max

I am trying to draw a custom BoxWhiskerChart with alternative values determining fences. I have data that has a lot of outliers and I have to compare it to another chart that has 10-90th percentile ...
2
votes
2answers
68 views

Adding a tree to a list of trees within a loop [duplicate]

I'm trying to write a function which for a list of trees checks if a given tree is isomorphic with any of the listed, and if not - adds it to the list. I tried to use both ...
2
votes
0answers
37 views

Apply IC and BCs on Second - Order Linear PDE

I am now trying to solve second - order linear partial differential equation in that interested eq. has been separated into variables to simplify the procedure for Mathematica. Here is my equation; ...
9
votes
3answers
107 views

Implement settable properties

I am looking for advice on implementing the following. (It is possible that the answer is that it is simply not a good idea to do this.) I would like to have an object similar to ...
0
votes
0answers
28 views

How to solve equations over polynomial rings

sorry if my question is very basic but I don't know what to even search to look it up and the only "obvious" places I thought of had nothing. Some background, for whatever context it might provide. ...
1
vote
1answer
27 views

Backward compatibility for plugins

Are plugins normally backward comatible? I would like to buy a plugin ready for Mathematica 7 and use it on Mathematica 8.
4
votes
1answer
46 views

Poor (network) performance of Interpreter[“Time”]

I was surprised to see that Interpreter requires external WR resources as this is not documented, at least not here. On a 3Ghz iMac, took ~half a minute to ...
0
votes
2answers
49 views

How can I name and manipulate several Input Fields? [duplicate]

I am completely new to mathematica--and have a very basic knowledge of programming. I would really, very much appreciate it if someone could explain to me how to refer to values entered into specific ...
1
vote
0answers
66 views

TimeSeriesForecast Forecasts

I am trying to make sure I understand how TimeSeriesForecast works. I apologize in advance for the basic nature of this question. I am using Mathematica 10. I ...
1
vote
1answer
74 views

ListPlot[] code for CSV file not working

I have a CSV file with $9$ columns. I want to plot them in the following way. Column $1$ will be along the $X$-axis. Any point $(x_i, y_i)$ of $i$-th curve in the plot will have the $x$ value from the ...
3
votes
0answers
61 views
+50

Using cursors with result sets to reduce memory usage

I have a database table with 900,000 rows and 80 columns per row which I'd like to work with in mathematica. My computations are isolated to each row, so I'd like to stream only a single row (or small ...
-2
votes
0answers
61 views

How to draw a shock polar like picture? [closed]

How to draw a picture like this? http://en.wikipedia.org/wiki/Shock_polar
0
votes
1answer
32 views

how to define (independent) the scale of x-axis and y-axis?

I want to compare 2 plots, and view that 4 lines are exactly the same tangent. So I would like to view 2 images with the same scale in the y-axis and the same scale in the x-axis How can I do this. ...
1
vote
1answer
94 views

how to find intersection between a parametric trajectoy and a point

I'have a 2d-system of differential equations, analitycally solved, depending on a parameter. I know that, by continuity, there exist a minimum value of the parameter such that trajectory passes ...
3
votes
2answers
203 views

All possible pairs of two items

I have 4 different items {1, 2, 3, 4}. I want to obtain all possible pairs of two of the items. I have written: ...
3
votes
3answers
125 views

Fitting the Plot by fourier Series of either sine or cosine

I have list of data and its plot and I don't know how to fit the plot with fourier series of either sine or cosine. Full Data: ...
4
votes
1answer
83 views

MinGW-64 and CompilationTarget -> “C”: can't make library

I'm trying to set up my new Windows 8.1 tablet to compile Mathematica (9.0.1) functions to C, using the MinGW-64 compiler. I have it set up so that the following works: ...
0
votes
0answers
54 views

Attempt to Run[“inkskape”] fails

I wrote a little script to convert various graphics files (.ps, .eps, .pdf) to the raster ones (.png). Export[out, Import[in], ImageSize -> size] fails for some ...
0
votes
1answer
40 views

What is the definition of FitResiduals

What is the definition of FitResiduals in Mathematica? I could not find its definition in the Mathematica help. Is it the same as chi squared?
5
votes
1answer
78 views

“The function DiscretizeGraphics is not implemented for GraphicsComplex” confusion

Why does DiscretizeGraphics seems to work on one GraphicsComplex and not the other? Here is an example that works: ...
1
vote
0answers
50 views

How do I obtain the Fisher Information Matrix from a data set?

My apologies in so much as this is probably in large part a problem of me not being aware of the necessary mathematics but since this should be a common issue in machine learning and Mathematica now ...
1
vote
1answer
67 views

How can I modify specific key values within a dataset?

Given a dataset, is there a way to modify a value? Example ...
3
votes
1answer
128 views

Add contour lines to Graphics3D

I am writing the following code: ...
10
votes
2answers
124 views

Dispatch displays rules incorrectly and evaluates when displaying

Consider this a = 3; disp = Dispatch[Unevaluated[{a -> 2}]] We see the rule 3 -> 2, rather than ...
0
votes
0answers
61 views

StreamPlot,StreamPoints and the Fisher's equation

I'm trying to reproduce a StreamPlot from a vector field encoundered while analyzing the Fisher's equation (http://en.wikipedia.org/wiki/Fisher%27s_equation), for a ...
2
votes
0answers
38 views

Export Notebook causes an INTERNAL SELF-TEST ERROR: Files2|c|1713 message

On my machine (Windows 8.1) and M10 the following two lines, that must be run on an already saved notebook, ...
9
votes
1answer
152 views

Classify command in Mathematica 10

Where can I find documentation about the methods used in the Classify command in Mathematica 10? Specifically, how does the method ...
1
vote
2answers
227 views

Plotting 3D piecewise function with distinct colors

I want to draw the following picture in Mathematica as shown below with distinct color for each section.
1
vote
0answers
35 views

Bug report: Attempting to Save Selection As… in a magnified Notebook fails with errors

I have found that attempting to Save Selection As... in a magnified Notebook fails with errors. On my system it can be easily reproduced by: opening any documentation page setting Notebook ...
3
votes
1answer
183 views

Is this a bug in FunctionDomain (V.10)?

I used FunctionDomain[1/(x^3 + 1), x, Complexes] and got 1 + x^3 != 0 Is this a bug in FunctionDomain (V.10)? Can I receive $x \neq -1$, $x \neq ...
4
votes
1answer
464 views

Why is there a huge performance gap using Map with more than 100 List entries

im using Map on a List like this: cube= {{1, 1, 1}, {1, 1, 2}, {1, 1, 3}, {1, 1, 4}, ... , {5, 5, 4}, {5, 5, 5}} Mapping the whole List with 125 entries takes ...
0
votes
2answers
53 views

intersection between two curves in Mathematica [duplicate]

I have a ListLinePlot of some datas and a plot of a constant function. How can I find the intersection point? My data are: ...
1
vote
1answer
44 views

Replace distinct values of list with values of another list

First of all I´m new to Mathematica; I´m trying to exchange distinct values of a list with values of another list (piecewise). I thought ReplacePart in combination ...
5
votes
1answer
205 views

Version 10 of Mathematica in Windows XP

I obtained the latest version 10 of Mathematica however, when I start the installation the process aborts and a pop up window explains that "The program requires Windows NT version 6.0 or later". As ...
2
votes
2answers
115 views

how to write string to file without Quotation mark

I am trying to Write String to file, something like this: Write["test.txt", "This is a test"]; when I opened the file I found that the string was written with ...
1
vote
0answers
64 views

Strange behavior of my vertex eventhandler!

I have two level EventHandler. The inner one is made of vertex of Graph and the other outer one is of the Dynamic Graph. (1) If I select a arbitray place on the Graph except a vertex, then every ...
-3
votes
0answers
37 views

Going back 10% on an price [closed]

I have updated something by adding 10% to a value, I now want to find the original value by taking 10% off, how can I do this?
3
votes
2answers
87 views

Can I save a manually cropped Image in Mathematica 10 without hard cropping?

In Mathematica 7 I was accustomed to a certain workflow: Paste an image into a Notebook Select Actual Size from the context menu, if necessary Ctrl-drag the control points on the sides of the frame ...

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