Questions on changing Mathematica expressions of one type or format to another, for example date formats, Boxes and other typesetting representations, or different units of measurements.

learn more… | top users | synonyms

7
votes
2answers
98 views

How to open and explore the codes of the system Palettes files

The built in Palettes of Mathematica are simply .nb files which can be found in the following place: ...
1
vote
2answers
192 views

How can I re-create the original Graph object from Graphics object into which that Graph was converted previously?

We can convert a Graph into Graphics very easily like it is shown in this answer. My question is: how to convert a ...
7
votes
1answer
105 views

How to convert arbitrary raw boxes directly into String?

This question is motivated by the recent question about searching inside of the NB files. According to the Documentation, ToString expects a high-level WL ...
5
votes
1answer
95 views

How to get “one Cell - one line” code format inside of NB files?

The PageWidth option controls the way the Cell's content is displayed, not the manner it's written in a ...
18
votes
2answers
314 views

Understanding evaluation and typesetting

Background So, one could be surprised by the fact that: Hold @ Grid[{{1, 2}}] (*or*) Hold @ Graphics @ Disk[] This issue and methods of prevention are ...
8
votes
2answers
87 views

Reading Cells or Boxes expression by expression

Let's say we have a cell: (*newline*) (*newline*) Plot[ x, {x, 0, 1} ] (*newline*) Plot[x, {x, 0, 2}] How to read it expression by expression? ...
1
vote
2answers
102 views

How to convert Image3D object into Graphics3D object and vice versa?

There are some rendering options (for example, Lighting) which are associated with the Graphics3D objects. I cannot apply these ...
6
votes
1answer
169 views

How convert old version 2.2 .ma files to .nb notebooks?

I have a lot of old Mathematica version 2.2 .ma files that simply crash the current (10.4.1) version of Mathematica if I try to open them. Is there some way to ...
7
votes
1answer
125 views

ToExpression and ToBoxes aren't inverses of each other?

Applying ToExpression and ToBoxes repeatedly to Hold[1/1] gives many ...
2
votes
1answer
97 views

Can one prevent $\TeX$ conversion from changing form of expressions?

This is similar to my previous question Can one prevent operators like `Factor` or `Apart` from changing full form of some algebraic expressions? but concerns $\TeX$ and I cannot figure out whether I ...
2
votes
1answer
62 views

$CellContext issue while trying to export the current output of a Manipulate

Having just read this question Getting variables out of Dynamic Modules after restoring the program and the Kuba's answer I'm trying to optimize my workflow. I'm writing a Mathematica notebook to ...
3
votes
1answer
52 views

An issue regarding the use of CopyToClipboard with dynamic content

Please, consider the following code: ...
10
votes
1answer
91 views

Arrows from GraphicsComplex not converted to Normal form correctly

Bug introduced in 7.0 or earlier and persisting through 10.4.0 Show @ Graph[{1 -> 2, 2 -> 3}, Frame -> True] Normal @ % Is this a pure bug, or have ...
5
votes
2answers
101 views

How can DateObject handle calender weeks

I have dates given for a TimeLinePlot. These dates are in {year,week} format. DateObject ...
5
votes
0answers
122 views

WDF specification?

Motivated by a recent question on the meaning of all sorts of W* acronyms, I would like to get more information about the Wolfram Data Framework (WDF). On its web page http://www.wolfram.com/data-...
5
votes
1answer
80 views

Custom rules for expressions in export to HTML(Fragment)

ExportString[Grid[{{a, b}}], "HTMLFragment"] ...
1
vote
0answers
74 views

Convert large KML coordinate datasets to UTM [closed]

I was wondering if there are ways to convert massive amounts of KML coordinates into UTM coordinates using Mathematica. Other programs would also be acceptable. Thanks. I have the KML file from ...
4
votes
1answer
69 views

convert MeijerG to form Standard Functions in Mathematica

I'd like to convert MeijerG[{{}, {1., 1.}}, {{0., 0., 4.}, {}}, -1. T λ] to its Standard Functions (For example Bessel function or ...). Any suggestion?
0
votes
1answer
70 views

Electromagnetism units conversion in Mathematica 10 (possible bug)

Is this a bug in Mathematica 10? Why can't I convert Amps/m to Gauss? ...
5
votes
1answer
163 views

Why Base64 ends with a newline? (\n)

Why everything converted to Base64 has a newline at the end? It isn't one of base characters, is it? ...
3
votes
1answer
69 views

Whitespace is lost during MathML -> XMLElement conversion

ImportString["<mtext> </mtext>", {"MathML", "XMLElement"} ] XMLElement["mtext",{},{}] while I'd expect: <...
2
votes
0answers
115 views

Export Mathematica to $\LaTeX$ properly

I am simply trying to convert an existing sample in Mathematica to $\LaTeX$. For example, if I open a new Mathematica notebook using styled templates such as Journal article and save it as $\TeX$. ...
1
vote
1answer
44 views

FromDigits gives “not a list of digits” error for integer string in StringExpression rule of StringCases

I have large StringExpression that is used in StringCases. Some of the parts being pulled out are integer strings. These pull ...
0
votes
0answers
42 views

Possible bug of Exporting as HTMLFragment at Linux

This is the result of Mathematica 10.0.2 of Linux Version. There are two style inside one tag, and this fragment cannot be Imported as XML by Mathematica. This is the result of Mathematica 10.1 of ...
2
votes
0answers
52 views

How to convert a list of polynomials into a list of equations and plug into Contourplot? [duplicate]

Given a list q of polynomials (output of GroebnerBasis) in two variables I want to transform the list into a list of equations and plug it into CountourPlot. For ...
5
votes
3answers
290 views

Converting between AbsoluteTime and Unix time

By trial and error, I've found that the following gives the current Unix time: AbsoluteTime[] - UPOCH where UPOCH can be defined in any of the following ways: <...
4
votes
5answers
156 views

How can I convert a Piecewise into a nested If?

For later conversion into a programming language where if is the only conditional construct, I would like to convert a Piecewise ...
3
votes
2answers
152 views

What's real analogue for FromDigits?

FromDigits only works for integer strings. What's its real-number analogue?
3
votes
1answer
86 views

Converting path list to the nested list

I'm trying to convert the plain path list to the nested tree list like the following codes. ...
0
votes
2answers
209 views

Decimal-to-ASCII conversion

I have to write a program that converts a number (decimal notation) to an ASCII string. For example, x = 26728 (or 0x6868) and the string is "hh". I wrote this, but it seems that it is not the ...
3
votes
1answer
151 views

ConversionRules and style inheritance

Take the LaTeX-Article stylesheet stylesheet = FileNameJoin[{"Article","LaTeX-Article.nb"}]; Compare these outputs ...
1
vote
1answer
3k views

Conversion of Sine to Cosine

I'm solving equations with many Cosines and Sines. And I want to convert all the Sines to Cosines using trigonometric formulas such as cos(x)=sin(x+pi/2). How can I do this?
2
votes
2answers
64 views

How do I extract the value of a 'Style'?

I have a Style displaying an underlying Real value. For example I might have ...
7
votes
1answer
114 views

How to replicate v9's color conversion to LAB under v10

Mathematica 10(.0.0) appears to use a different flavor of the LAB color space, but I would like to emulate the same behavior observed in version 9(.0.0). v9 ...
10
votes
4answers
410 views

Built-in way to convert Integer to Ordinal String

Is there a built-in way to convert an integer into its ordinal string representation (as per this page). That is, something akin to ...
0
votes
0answers
36 views

Strange style conversion indicator appeared when type “a Pre”

I got the following strange style conversion indicator when I was typing a Pre(character a and ...
4
votes
2answers
584 views

Conversion of 3D plot to 2D Contour Plot

Is it possible for Mathematica to convert a 3D plot into a 2D contour plot without having to recompute the values for each point? I realize that looking directly down at the 3D plot will be similar to ...
8
votes
3answers
240 views

Incompatibility of Row and TeXForm

Bug introduced in 9.0 and persisting through 10.1.0 or later Update: Since no one has been able to give a reason for this change in behavior or provide a solution I am tagging this as a bug. ...
2
votes
2answers
314 views

Simplify results further

I have an extremely long result in polynomial form following some matrix operations. However, given the symmetry of the problem, I can safely say that the solution will reduce much further than is ...
7
votes
6answers
4k views

Convert a string into a list of numbers

I got the following problem I don't know how to solve or if it's at all possible to solve(I'm quite new to Mathematica and don't have an IT background, so please explain slowly if possible:)) I'm ...
0
votes
1answer
1k views

How to convert sine wave into square wave? (analog to digital signal)

I've got this plot with two sine waves and what I need is follow: Amplitude values can diverge from time to time like here min 100 and max 700 but another time it's 300 600. I guess I will not be ...
2
votes
0answers
131 views

Read in bezier curve from svg file

I am trying to do some calculation of some svg file,After read in with Import["filename","XML"]and some easy operation, I can get the string of the bezier curve, ...
2
votes
1answer
144 views

Convert frequency counts to long notation in Mathematica

I have a series of frequencies of values, e.g. 5 times 1, 10 times 2 and 5 times 3, as in list={{1,5},{2,10},{3,5}} and I would like to convert this to long ...
8
votes
3answers
242 views

Graphics in Notebook Different from Graphics Expression?

Consider the expression TreeForm[a+b^2+c^3+d] which displays as This is a nice Graphics object, as I can prove by typing ...
9
votes
2answers
295 views

Working with Java hashmaps from Mathematica

I'm using J/Link to access data from an external Java program. The data are represented as a ConcurrentHashMap (see the official specification here). ...
1
vote
2answers
635 views

Converting expression into string without evaluating it

How can one convert a Mathematica expression into a string without the expression being evaluated first? I tried using Hold, but it returns ...
7
votes
2answers
2k views

How to convert a string of number into real numbers without precision loss

I searched and did not find similar answers which can resolve the 'no precision loss' issue. A sample string is: ...
0
votes
3answers
209 views

Conversion of binary matrix of mlf into multilinear function, any ready function for this?

I convert here only one term $x_1x_3x_7$ from the binary matrix by first getting the reversed binary 1010001 and then miggling with the data. I know I could convert the columns into binaries and then ...
1
vote
2answers
63 views

How to get monomials multiplied by each other?

Suppose Subscript[x, #] & /@ {1, 3, 7} that returns {x_1,x_3,x_7}. Now how can I get ...
0
votes
1answer
197 views

Old notebook (Version 3) not opening in version 9

I have some old notebook files in version 3 format from the book "Mathematica for Physicists". These files are blank except for the chapter header when opened in Mathematica 9. I have similar ...