Questions on the manipulation of String objects in Mathematica, and the functions used for these manipulations.

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14
votes
5answers
2k views

sprintf() or close equivalent, or re-implementation?

Is there a sprintf() command (some command that takes a printf-style format string and a list of values to insert into the ...
10
votes
4answers
493 views

How does string interpolation work in Mathematica

I've noticed that Mathematica 8 seems to have some kind of string interpolation feature, but I couldn't find any documentation on it and I can't figure out how it works. For example, if I enter ...
1
vote
1answer
85 views

Insert glyphs into a string using functional code

I asked this question few days ago: Replace For-loop with functional code Suppose I use strings instead of lists; for example a = ToString /@ {123123, 112233};` ...
5
votes
2answers
234 views

How to get complement of a pattern

I have a list. I want to get all the elements in that list which do not match a given pattern. That is, I want the strings which do not match any of the following patterns: First and last characters ...
9
votes
1answer
133 views

Named string patterns in Alternatives, why does it depend on order?

When using the same name for part of patterns inside Alternatives how come it behaves differently for strings than in normal patterns? ...
3
votes
1answer
161 views

Use of StringExpression as argument

Is it possible to use a StringExpression as a pattern for an argument? I.E. something like foo[chars__~~ WordCharacter.. ~~ num:NumberString] := {chars, num}; At ...
5
votes
3answers
346 views

How can I find English words among the names of the characters in the Mathematica character set?

I want to find some single meaningful words in the "ASCII/Unicode" form characters. For example, I want to get alpha from ...
4
votes
0answers
80 views

Error with String patterns producing Removed[“$$Failure”]

While working on How to capitalize the first letter of each word in a string and trying to understand why certain characters were not considered letters I tried this: ...
4
votes
4answers
229 views

How to construct tuples with a given order?

How do I create a list of tuples with an ordering imposed on them, where each element is from a generating set? Specifically, I'm trying to create a listing of tuples $(x_1, x_2, ..., x_n)$ such that ...
5
votes
2answers
262 views

Removing commented lines of text in a string

Suppose that I have a string str. str contains headings -- which are written in commented lines -- and data. For example: ...
5
votes
3answers
379 views

Highlighting text with StringReplacePart but also using Style, Subscript

For a Natural Language Processing analysis task it's desirable to highlight a text string programmatically according to XML tags that reference specific words or phrases. The XML tags specify the ...
3
votes
1answer
567 views

Convert String to List of Numbers

I want to create a function that when a string is entered it will turn it into a list of numbers, these numbers are the numerical form of the characters in the string. e.g. a=1, b=2, c=3, d=4 and ...
-3
votes
2answers
132 views

StringCases functionality

I have a list of strings in where each element of the list is in this form: ...
2
votes
2answers
111 views
1
vote
3answers
538 views

How to export a header before the data in the result file?

I would like to export a phrase to my result data as a heading. I'm exporting the data correctly with Export["file.dat", table]. But I'm doing several ...
20
votes
7answers
1k views

Elegant and fast way to join all string sequences

I want to do what title says: {"a","b",1,2,3,4,"a",2,2,2,"edg","?"} => {"ab",1,2,3,4,"a",2,2,2,"edg?"} in the most elegant way. For example one replacement rule for ...
1
vote
1answer
195 views

Style markers in strings

I'm dealing with strings in Mathematica and I would love to handle their stylling in the most cenvenient way. Without loss of generality, let's assume I want to make some parts of string ...
4
votes
3answers
513 views

Using subscript in a string

I am trying to create a string of the form $0 < d_1 < d_2 < \ldots < d_n$ For a given n. My closest attempt so far is ...
5
votes
2answers
204 views

Extract substring by repeated StringPattern

This code failed, but may exemplify my intention. StringCases["aA1bbbbbbbbbbaA2baA3b...aA4b",Repeated[Shortest["a"~~xx__~~"b"],{2,100}]] I want to get the ...
1
vote
1answer
97 views

How to make the StringExpression not occur in my case?

Why is there a StringExpression in the following code? ...
2
votes
1answer
875 views

How to import a Microsoft Word document into Mathematica?

I have a Microsoft Word document in DOCX format. I need to import it into Mathematica as a String preserving all formatting (font, size, bold/italic style, colors, ...
3
votes
2answers
292 views

StringReplace except some pattern

StringReplace and search out of one pattern ...
19
votes
3answers
362 views

Unexpected result {“.a”, “co”, “.m”} from Sort[{“.m”, “.a”, “co”}]

I came across the following situation: Evaluating Sort[{".m", ".a", "co"}] Results in {".a", "co", ".m"} I wondering: ...
10
votes
3answers
266 views

balanced Shortest[] and string-patterns

The pattern Shortest["A"~~__~~"B"] is oriented : It assumes the text is read from left to right and it takes the text between the first "A" and the next "B". Any ...
1
vote
0answers
107 views

Split one string about a fixed width with `SyntaxQ=True`

How to split one string about a fixed width, the string may come from the input or output cell of Notebook. sample string ...
3
votes
1answer
159 views

Importing strings in Mathematica

This is my first post so apologies if any obvious mistakes. I'm trying to work on a data containing names (in quotes) in Mathematica. The data is already saved on my system under ...
6
votes
1answer
313 views

String pattern search and replacement — it works, but produces error messages only the first time it is called

I defined a function in Mathematica to process a pre-generated string. More specifically, I'd like to process some parts of C codes generated from MMA. Basically what my function does is to expand the ...
6
votes
1answer
244 views

Match sequence of zero or more characters except a given character

This looks like it should be simple: I want to match an "i" followed by an "o" with an arbitrary (possibly zero-length) sequence of characters in between, unless that sequence also contains an "i". ...
1
vote
1answer
165 views

Searching a string that may contain Null

I have an array of triplets that can be approximated by the following code: ...
2
votes
1answer
230 views

Showing special characters in text containing unicode

How does one conveniently convert a string like: "Ya no me burlar\:00e9 de la diabetes de Nick Jonas. Me lo guardar\:00e9 para cuando le corten la pierna. S\:00ed es que a\:00fan alguien lo recuerda, ...
3
votes
5answers
439 views

How to write a function to remove comments from a .m source file preserving formatting such as line wrapping reasonably?

How to write a function to remove comments from a .m source file preserving formatting such as line wrapping reasonably? This means if I have ...
5
votes
6answers
329 views

Selective thinning of string elements in nested lists

I have a nested list similar to this example list (but much bigger and more messy): ...
4
votes
5answers
308 views

A simple StringCases problem

Given this text: text1 = " A Vitamin D Deficiency (ICD-9-CM 268.9) (ICD-9-CM 268.9) 09/11/2015 01 "; Yes, the ICD code values are duplicates- possibly but ...
23
votes
4answers
1k views

What is the fastest way to count square-free words?

Background A word is a string of letters in an alphabet. A square-free word has no adjacent repeating substring. For example, (in the ternary alphabet of {0,1,2}) the words 00, 012121, and 0212012021 ...
5
votes
3answers
508 views

Find the position of a string element, knowing only part of the string

I have a list, e.g.: list = {1, 2, 3, "Element 1", 4, 5, "Element 2", "Something else 1", "etcetera"} Now, I want all elements starting with ...
6
votes
1answer
118 views

How does `LongestCommonSubsequence` work?

When I recently came across this posting about LongestCommonSubsequence I was curious about how the function worked. ...
3
votes
1answer
315 views

String replacement to make the TeXForm output beautiful

This question is inspired by this question: How to convert the symbol $d$ in Integrate into $\mathrm{d}$?. Although it’s not a big problem, the TeXForm can be ...
0
votes
0answers
99 views

How to highlight a string pattern? [duplicate]

This is an example in the help pages (Working with patterns: Highlight Patterns): ...
10
votes
1answer
812 views

Mathematica equivalent of regex '\w{2,3}'

It beats me to write the Mathematica pattern equivalent to the regex: \w{2,3} Any ideas?
38
votes
3answers
1k views

Visualizing the difference between two sequences (strings)

I'm trying to develop a way of comparing two sequences (probably originally text, such as text writing or source code, possibly converted to lists). As a familiar example, consider the revisions ...
2
votes
2answers
200 views

Image processing - How can I apply an operation to several images at once?

I imported pictures into Mathematica, and used names for them that follow the easy scheme "name" string joined with an integer, ranging from 14 to 20. Printing these images on screen works nicely: ...
0
votes
2answers
123 views

help with StringJoin [duplicate]

dollarWon := 100 "(" <> Style["$" <> ToString[dollarWon], If[dollarWon >= 0, Darker[Green], Red]] <> ")" I am getting an error: String ...
6
votes
2answers
215 views

How to count words in a Greek text

I want to perform a simple analysis of some Greek text: collect the different words used and count their frequency. It seems that some of the built-in commands do not work well with Greek letters. For ...
1
vote
2answers
177 views

How to convert TableForm to proper LaTex and why is “\” not replaced by StringReplace?

I'm trying to optimize the teXForm output of a table because the standard output ist not satisfying: ...
12
votes
1answer
642 views

Rearranging a Polynomial

In Mathematica 8.04 on Windows, I want to display a formula in standard textbook format. The formula is the variance of an $N$-security portfolio. For two securities it is: ...
5
votes
3answers
3k views

Parameters in plot titles

My issue is how to mix strings with variables, specifically in the context of PlotLabel: I can put a string as my plot title, and I can also put a variable as a ...
7
votes
3answers
329 views

Unencoding encoded URLs in a function

Is there a built-in function for decoding encoded URLs in Mathematica? I would like to convert an encoded URL, for example ...