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

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7
votes
3answers
320 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 ...
14
votes
2answers
319 views

Haiku Extractor

Inspired by the cool Tumblr Haiku Times that searches for accidental haiku in New York Times articles, I tried my hand at implementing such a search in Mathematica for my own text samples. I'm still ...
1
vote
2answers
125 views

Finding strings in Web Code [duplicate]

I haven't found an answer that solves my problem, although I think it's actually a simple one. It seems hard to me because I don't have a lot of experience with string patterns. I have a Web Code ...
0
votes
1answer
241 views

Construct file names using a number and a string prefix [duplicate]

I'm trying to append filenames with Mathematica, and cannot do it. The output of my calculation are two lists : X and Y, ...
-4
votes
2answers
225 views

how can i convert data into string format? [duplicate]

I have nested-lists in number format,like data={{1,2,3},{2,{3,4,50}},{4,5,6},{3,{3,{5,6}}}} I want to convert each number into ...
5
votes
1answer
168 views
0
votes
1answer
171 views

How do I construct a “named character” programmatically?

Why am I getting the error Syntax::sntunc: Unicode longname in the string is unterminated. from the following? ...
6
votes
4answers
286 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 ...
1
vote
2answers
119 views

Why do I get two different results from StringLength?

I spent a reasonable amount of time to find the origin of an error in a larger code segment. ...
22
votes
6answers
691 views

Partition string into chunks

This seems like it should be trivial, but how do I partition a string into length n substrings? I can of course write something like ...
2
votes
3answers
415 views

How to extract a consecutive list of substring from a string?

Given a list of strings: data = { "2894;Hot Pink;53:09:44;1449714", "17456;Dark Cyan;19:06:42;6929227", "5147;Lime;54:11:55;5247632" } (Words are separated by ...
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? ...
5
votes
2answers
299 views

Concatenate strings from different levels of list

After a lot of trouble I've finally come pretty close to what I want to do. I now have a list that looks like this: ...
2
votes
1answer
110 views

Confused behavior using Dispatch to sort one list relative to another

I have a need to sort the entries of one list into the same sequence as the entries in a reference list. Because I have rather large lists involving strings, I'm trying to use Dispatch to accomplish ...
1
vote
1answer
275 views

Renaming files of form FileName(i).csv to NewNamej(k).csv where j increments and k resets to 1 when there is a jump in i?

Edit up top: The accepted answer works splendidly except I had to add //ToExpression to the end of the definition of ns given by ...
25
votes
1answer
646 views

Convenient string manipulation

With Mathematica I always feel that strings are "second class citizens." Compared to a language such as PERL one must juggle a lot of code to accomplish the same task. The available functionality is ...
15
votes
6answers
472 views

Splitting a list by specifying section headers

I have a list of strings called mylist: mylist = {"[a]", "a", "a", "[b]", "b", "b", "[ c ]", "c", "c"}; I would like to split ...
3
votes
0answers
130 views

Unicode beyond Basic Multilingual Plane

String manipulation takes a dive when characters beyond \:FFFF are used e.g. Mathematical Alphanumeric Symbols. The characters display fine but doing string ...
4
votes
2answers
100 views

How can I know if a pattern corresponds to a string pattern?

What would be the best way to detect if a pattern corresponds to a string pattern ? An invalid string pattern p would lead to an error in ...
10
votes
2answers
299 views

Mathematica Typing Effect

Here is a Typing Effect in javascript. I could only implement a very simple one: ...
4
votes
1answer
131 views

Strange behavior of DateList when converting string

DateList experiences some strange behavior which i cannot explain. This code works fine: ...
20
votes
2answers
3k views

How to import all files of a folder at once?

I know how to import one textfile by calling its name filestring = Import["myfile.tex", "Text"]; Then "filestring" is a string with the myfile content. How do ...
9
votes
5answers
773 views

convert long string to integer list

at first, i would like to thank all the people here. i'm working with mathematica for half a year now and always found great advice and tricks. now, i came up with a problem i couldn't find a ...
3
votes
2answers
188 views

Import[] exception possibly caused by ToString[] behaviour which I cannot explain

Let me just start by pointing out I'm a new StackExchange user as well as a new Mathematica user (started today!) I mention this as a context to my ineptitude :) I am attempting to read through a ...
4
votes
1answer
71 views

WordBoundary issue in StringReplace

Why does the following StringReplace pattern match: ...
2
votes
1answer
129 views

ToString in a function

f[x2_] = ToExpression[StringTake[ToString[x2], -1]] x2; f[a3] (*Out: 2 a3*) I expected the output to be 3 a3, but apparently ...
4
votes
2answers
737 views

Split string into sub-strings of length n [duplicate]

Possible Duplicate: Partition string into chunks How can I split a string into sub strings of length n? For example I have a string "ABCDEabcde1234" ...
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 ...
6
votes
3answers
293 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: ...
25
votes
3answers
1k views

How to join two Style[]d strings

Does anyone know whether it is possible to combine\join two styled strings? That is, while the following code works fine: omega = "text"; omega<>omega ...
3
votes
3answers
584 views

Converting a string containing whitespace-delimited numbers to a list of numbers

Suppose I have a string str that contains only whitespace-delimited real numbers: ...
19
votes
2answers
1k views

How do I perform string matching and replacements?

What are, and how do I use Mathematica's string matching and replacement tools?
6
votes
2answers
154 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) ...
5
votes
3answers
359 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
5answers
470 views

Extracting columns of text from a rectangular string

I have very large rectangular strings (on the order of 30-100 MB in size), which I import into Mathematica from text files using a command like ...
3
votes
3answers
124 views
3
votes
5answers
317 views

How to extract strings from the list with an additional condition on previous elements?

There are a long list of strings $s$ and two lists of substrings $s1$ and $s2$. I want to take all elements of $s$ which contain a substring from $s2$ and such that before it on no more than $n$ ...
11
votes
7answers
224 views
5
votes
3answers
172 views

DateList's aggressive interpretation of TimeML duration codes

DateList "aggressively" interprets strings, such as "p72h": DateList["p72h"] gives ...
4
votes
4answers
725 views

Creating lists from a string, separating words from numbers

Say I have a string that contains numbers and words, such as this one: string = "there are 1234 words and numbers 5678 in here $999"; How would I separate the ...
5
votes
1answer
392 views

import complete date string to mathematica

Based on an example from here I try to parse dates from a table including the time, but it fails. This is the modified example: ...
3
votes
4answers
221 views

Remove anything between () except for ; in a string

A simple question but I can't find the answer. I'm scanning a huge pile of mails and would like to get rid of anything between () in the email adresses since this normally contains just info that ...
6
votes
2answers
287 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 ...
12
votes
2answers
356 views

Split a Unicode string maintaining uppercase characters

I want to split a string according to a predefined set of substrings (lowercase), though the actual text can contain uppercase characters anyplace. The task is to find the matches, longer preferred ...
9
votes
1answer
249 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 ...
11
votes
2answers
236 views

Pasting “rectangles” of text side-by-side

In Emacs/Xemacs, there is a rectangle feature, such that you can delete, copy, etc., "rectangles" of text. Now suppose I have two text files, each containing one column of numbers. Is it possible to ...
9
votes
2answers
251 views
9
votes
2answers
427 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 ...