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

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9
votes
2answers
237 views

Behavior of ImportString in Mathematica

I tried the following commands ...
9
votes
4answers
421 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 ...
9
votes
3answers
239 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 ...
9
votes
2answers
350 views

Keeping Quotation Marks in Output

I am running into the following seemingly simple problem. I have this code: testphrase="i love you"; input=ToLowerCase[StringSplit[testphrase, Whitespace]] It ...
9
votes
1answer
125 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? ...
8
votes
3answers
562 views

Specifying string patterns in DeleteCases

It seems that DeleteCases is not compatible with string patterns, at least directly (see, for example, this question). Is this true? If so, why is this the case? ...
8
votes
2answers
2k views

Convert a string to hex number?

How can I convert a string containing a hex number such as "6b" to a hex digit that mathematica can use to do math with? I have tried using ...
8
votes
1answer
114 views

CSS Selectors for Symbolic XML

Symbolic XML is a convenient way of managing XML in Mathematica, at least for casual use or small tasks. Here and elsewhere you can find examples of XML handling in Mathematica, including XSLT/XPath ...
8
votes
2answers
526 views

A femme is a wife is a Frau

As can be seen from LanguageData["Properties"] // Multicolumn Mathematica's translation capabilities seem to be very limited. It can translate month names, ...
8
votes
1answer
243 views

Creating a version of SequenceAlignment that accepts patterns

SequenceAlignment seems like a function that is not (yet?) fully integrated into Mathematica. I want a function that accepts general patterns instead. I ...
8
votes
0answers
197 views

How to convert a notebook cell to a string retaining all formatting, colorization of identifiers etc?

I have an opened Mathematica notebook containing several cells. Suppose, I am interested in one of them -- it may contain a complete or incomplete expression (e.g. with syntax errors, highlighted ...
7
votes
3answers
293 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 ...
7
votes
3answers
451 views

How to capitalize the first letter of each word in a string

The following examples only work for the first character of the whole string, but not of words. ...
7
votes
5answers
354 views

Splitting strings at lower case characters and numbers

I'm trying to split the strings of chemicals into their elements and numbers. See this example "Fe3O4" will be split into ...
7
votes
5answers
248 views

String replacement question

If you have a string string="<ALK>ene" and I have a list alk={"meth", "eth", "prop", "but", "pent"}, what function ...
7
votes
3answers
547 views

Creating word histograms from lists of strings

Consider the following: ...
7
votes
3answers
310 views

How to parse information contained in a file name

I have a set of files containing my data, and the file-names contain relevant information that I would like to extract. What I have is: ...
7
votes
3answers
163 views

Converting StringJoin to StringForm inside Hold

Let's say I have a piece of code: Hold[{code1, "asdad " <> ToString[testa] <> " adsd " <> ToString[testb], code2}] (*MWE ofc*) ...
7
votes
1answer
2k views

What pattern will match accented letters in a regular expression?

How should I modify the following such that the accented letter É is matched and the expression returns True? ...
7
votes
2answers
185 views
7
votes
3answers
225 views

How to turn a set of strings which represent a list into a 2D list

I have a set of data read in from a larger CSV file. I want it to match the format I have from another analysis. It is structured as a series of strings with letters and numbers Here it is copy-pasted ...
7
votes
2answers
287 views

Revert FullForm-ed text to prettyprinted

Sometimes strings in a notebook/package file end up garbled due to some unknown/unintentional conversion of the expression/cell/notebook. I could not find a way to revert such unreadable text to its ...
6
votes
4answers
279 views

Where can I take a pool of words from?

Dear Community members, I am thinking about an interactive machine to teach a school child to write difficult words correctly. As a first step I need a collection of words. I will select a pool of ...
6
votes
2answers
472 views

How to overload System`StringJoin to automatically use ToString on arguments?

I am using an overloaded version of the StringJoin function since years now, without any problem, as I've invested a lot of time and effort earlier to make its ...
6
votes
4answers
576 views

Caesar's cipher

How can Caesar cipher be implemented? I want to use StringReplace but I don't know how to write the replacement rule to replace the characters with, say, the ...
6
votes
4answers
283 views

Is there a more Mathematica-y way to label these plots?

I am studying an infinite square well in the context of quantum mechanics. ...
6
votes
3answers
906 views

print the name of the variable in a list without evaluation

a := az + 1 b := bz + 5 list := {a, b} I'd like mathematica to print a = az + 1 b = bz + 5 so basically it needs to first ...
6
votes
3answers
198 views

Problem with WordBoundary in string patterns

I am trying to extract from a string all words that end with "-man", but the problem is that WordBoundary does not seem to work as it returns whole string ignoring ...
6
votes
2answers
172 views

How to Clear variables represented as a list of strings?

Say I have a string list called fullpara fullpara={"width", "long", "line", "distance"} And there are corresponding variables ...
6
votes
3answers
269 views

Importing and manipulating strings - time data

I have a list of time durations, which are strings of the form: "hh:mm:ss". Here's a sample for you to play with: ...
6
votes
2answers
147 views

Why is StringMatchQ[“IP1”, “IP”] returning False?

Maybe there is a knot in my head, but I would expect that StringMatchQ["IP1", "IP"] should return True (which it does not) ...
6
votes
3answers
171 views

Isolating string characters

I have the following string: ...
6
votes
3answers
242 views

String templating

I am pretty new to string processing in Mathematica. But I'm having some problems in doing simple string template filling to my mind elegantly. For example when doing export for my answer here, one of ...
6
votes
1answer
134 views

Understanding `Paste` and how to get a string from the Clipboard to use with `ImportString`

Trying to work on this question I got distracted by my first naive attempt of copying the data and then typing dat = ImportString[Paste[], "Table"] ...
6
votes
2answers
147 views

Using Except with strings

Suppose that I have the following sample list, called list: list = {"bBb", "aAa", "aaa"}; Now suppose I want to select the ...
6
votes
1answer
158 views

Returning computable numbers from WolframAlpha

WolframAlpha["Apple company revenue", {{"Result", 1}, "Plaintext"}] Desired output 182800000000 ...
6
votes
2answers
241 views

Formatting text through pattern matching

I am trying to format some text based on some patterns. ...
6
votes
1answer
290 views

Interpreting text entry and splitting it in a Manipulate text field?

I have the following program that plots the number of trigram appearances across a corpus of textual information between 1964 and 1989 (apologies for the messy code): ...
6
votes
1answer
215 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". ...
6
votes
2answers
238 views

Converting a string into a nested list of strings

The following string can be converted easily into a list with ToExpression ...
6
votes
3answers
428 views

neighbor swapping distance between two strings

Updated Problem Description I have a collection of strings $S$ that only contain two (or $m$ in general) kinds of elements: in this case C and D. For all $s\in S$, the length is the same, the number ...
6
votes
1answer
237 views

How to set up new types for pattern matching strings?

Consider the following toy example: I have a set of language sounds, which I partition into two exclusive subsets, consonants and vowels. I want to set up string patterns for e.g. ...
6
votes
1answer
259 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
2answers
271 views

How to choose variables from a list for a function and then use the solution in a subsequent function?

I am trying to calculate heating degree days and cooling degree days and output that information to a table. I am using mathematica's curated data to do this. In text this is what I would like to ...
6
votes
1answer
204 views

Dataset and string conversion, using Internal`StringToDouble

i'm trying to get familiar with the new Dataset-stuff in Mathematica 10. As it will (hopefully) provide some benefit for me, I have started to convert my app to move from list and list of rules to ...
6
votes
1answer
113 views

How does `LongestCommonSubsequence` work?

When I recently came across this posting about LongestCommonSubsequence I was curious about how the function worked. ...
5
votes
6answers
938 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 ...
5
votes
3answers
312 views

Thousands separator (comma) option for NumberString/StringCases?

I've been looking for a way to read numbers that have thousands separators in them: StringCases[" 1142.123 ", Whitespace ~~ NumberString ~~ Whitespace, 1] gives ...
5
votes
6answers
256 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): ...
5
votes
3answers
336 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 ...