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

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29
votes
4answers
3k views

Looking for “Longest Common Substring” solution

I'm looking for robust code to solve the "Longest Common Substring" problem: Find the longest string (or strings) that is a substring (or are substrings) of two or more strings. I can just code it ...
14
votes
3answers
739 views

How to remove accents from text?

I would like to know how I can remove accents from a string. For example, how can I transform "string test áéíóú" into ...
0
votes
1answer
50 views

How to check String format?

How can I check if the string contains a real or integer number, space and string? e.g. StrCheck["156 af"] = true ...
11
votes
1answer
415 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 ...
0
votes
1answer
46 views

How to manipulate string parts?

Let's consider I have following string: "{a-> POR, b-> D610, c-> 0, d-> \"300/7\", e -> \"1/400\"}" How can I run over and update anything that is ...
0
votes
1answer
161 views

Converting strings of the form “1.34e5” to real numbers? [duplicate]

ToExpresssion doesn't understand real numbers of the form "1.34e5". How do I convert the string ...
2
votes
1answer
133 views

How do I dynamically construct a string from a variable number of 'PopupMenu's in 'Manipulate'?

I have a string with a variable length, determined by the value of a SetterBar and whose characters are determined by a corresponding number of ...
14
votes
8answers
969 views

DeleteCases on list of Strings

Consider the following: data={"AB","CD","AF"}; Now I would like to delete all String from data which starts with "A". ...
11
votes
3answers
752 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? ...
0
votes
1answer
39 views

Selecting from a list [duplicate]

OK, I know this must be a simple problem, but right now I'm just stuck and need some advice with this :). I have the following list: ...
0
votes
2answers
44 views

How do I complete this function len for the length of a line segment?

I need to have len[{{x1,y1},{x2,y2}}] is Sqrt[(x2-x1)^2+(y2-y1)^2]. The beginning of the function will be defined as ...
13
votes
3answers
334 views

Transform fancy usage messages in 1D string

When we look at the usage messages of built-in functions nowadays (not in the good old times, when they were a simple descriptions) we see that although they look pretty in the front end, it is really ...
7
votes
4answers
446 views

Strange answer from StringReplace

I have a list of strings and I would check if there is an empty string element, that's "", because I need to replace it with a "0". I try the following ...
0
votes
2answers
78 views

Get a filename used in an import and store it as a variable

Hopefully a simple one for you (or at least seemingly)! I import a .txt file, from which i make a ListLinePlot. I simply want to read in the name of the file, store it in a variable so I can use it ...
3
votes
1answer
71 views

When is Unicode code point same as Mathematica CharacterCode?

For what characters c does CharacterCode[c] not return the same value as c's Unicode code point? How does one convert c to its Unicode code point with Mathematica ...
3
votes
2answers
186 views

Please help translate regular expression to StringExpression

I am familiar with regular expressions in other languages (e.g., Perl, Python, ViM), but the Mathematica StringExpression is baffling me. I'd like to match strings ...
3
votes
1answer
41 views

How to process Result of StringReplace?

StringReplace["item_10", "item_" ~~ x__ -> x + 1] returns "1+10" How can I force it to evaluate to 11?
1
vote
2answers
110 views

How do I make a single character bold?

I have a string of characters, like "CDABOZPVRYXSWQEGNILUTHMKJF" and want to convert it to a string in which the character at position ...
0
votes
2answers
74 views

Using StringReplace to make file names

Often I'm making many plots for different values of parameters. Each plot has a nice PlotLabel with superscripts, subscripts and some special characters. I would ...
1
vote
3answers
241 views

Swap first and last names in a list

Edited to fix an inconsistency in the given example data format. I'm trying to write a simple function to load in a csv list of names which is formatted as "Lastname Firstname Initial " and ...
1
vote
3answers
368 views

Replace with position and order number

question conversion1 : Convert "[AA]AB[AA]BB[AA]B[AA]CCC" to "[A1A2]A3B1[A4A5]B2B3[A6A7]B4[A8A9]CCC" conversion2 : Convert ...
1
vote
1answer
74 views

Are all of the numbers in my file legitimate hex numbers

I have about 10,000 hexadecimal numbers (32 digits each) in an excel file, in one column. I want to verify that all of them are indeed hexadecimal number and that no other characters are present. My ...
0
votes
2answers
81 views

Is there a manual way to generate a string of zeroes with a 2 at the end?

How do I get mathematica to display 33141015 zeroes and a 2 I've tried using 2*10^-33141016 but it just gives me scientific notation Is there a manual way to generate a string that looks like ...
3
votes
2answers
222 views

Regular expression too large problem

pattern = Names["*"]; StringMatchQ["Bold", pattern[[1 ;; -1 ;; 2]]] (* True *) StringMatchQ["Bold", pattern] Error Information: ...
2
votes
1answer
109 views

Optimizing alphametrics code

First of all, thank you all in this great community. I have been reading a lot of threads about Mathematica optimization learning things like using Compile ...
1
vote
1answer
64 views

Using the string Match with options! [duplicate]

Here is what I want to do: I have a list of strings for example s={"red carpet","red box","black carpet","black box"} I want to use something like ...
18
votes
1answer
539 views

NotebookFind and String Pattern Expressions

Is there a way that NotebookFind can be used to match string pattern expressions rather than just strings? The documentation for ...
4
votes
3answers
185 views

How can I improve NumberString?

I would like to test strings to see if they represent numbers. This should include number representations with precision marks and scientific notation. NumberString ...
3
votes
1answer
65 views

Is the use of StringTemplate with a styled string documented behavior?

I was pleasantly surprised to find out that StringTemplate appears to work with styled (formatted) strings, with the style of the slots applied to the inserted ...
2
votes
0answers
95 views

How to efficiently find parts of a string with beginning and ending specified?

I'm trying to find specific URL addresses from a html document. The addresses can be found between the strings "href=\"" and "\" class=\"listing". The problem is not including strings like this: ...
17
votes
8answers
3k views

How to express an integer number in English words?

How do I convert a number to a readable string? I would like to implement a function, inWords[], inWords[n_]:= ? which ...
9
votes
2answers
165 views

Convert recursive RegularExpression to StringExpression?

Consider the following expression for matching balanced brackets: ...
1
vote
2answers
81 views

Why doesn't ToString work in ReplaceAll? [duplicate]

I'm trying to use ReplaceAll in a subscript. However, it doesn't seem to work as expected if I want to use the output the subscript in a ...
3
votes
1answer
94 views

Strings with exclamation marks in Mathematica [duplicate]

Given this input FullForm[ToString[TraditionalForm[x]]] Mathematica outputs "\!\(TraditionalForm\`x\)" It seems like ...
6
votes
1answer
176 views

Limit characters/digits entered into InputField

When using InputField, whether setting the input type as a Number or String, is there a way ...
6
votes
3answers
371 views

Finding all sublists or substrings of a given list/string

Given a list or string, how do I get a list of all (contiguous) sublists/substrings? The order is not important. Example for lists: ...
0
votes
2answers
163 views

Exctrating data information from a file.txt

I really did previous long search in the site and I couldn't find any answer that might help me. So I am asking it. I have the following data set, ...
4
votes
1answer
96 views

How to convert expression with Subscript to string

I've tried ToString[], but it doesn't work properly with subscripts: How to convert expr with subscript to string with exactly the same FullForm that "expr" has?
4
votes
1answer
108 views

Parsing string with nested information

I am trying to parse a string, but I have no idea how to solve the following problem ...
0
votes
2answers
130 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 ...
1
vote
0answers
80 views

Geodesy without units?

Suppose I'm interested in the latitude of Los Angeles and I do the following: ...
0
votes
1answer
67 views

Data file organized in strings

I am working in a data set : The original question, They are strings of thousands stars,and each one contains a lot of parameters, and the following item is called identifies, they are the names ...
7
votes
1answer
147 views

LetterCharacter for Cyrillic symbols

Why does the code StringMatchQ["ы", LetterCharacter] return False? Probably because: ...
10
votes
2answers
172 views

Unexpected result from StringReplace

The following works as expected. StringReplace["xxxyxz", "x" ~~ _ -> "ww"] "wwwwww" And so does this. ...
0
votes
0answers
47 views

Error when converting a string involving superscript after closing square bracket using ToExpression

I would like to store a piece of code in the form of a string, make some string transformation to it and get the new code evaluated using ToExpression. Everything works just fine but one: if there is ...
3
votes
2answers
191 views

how to extract the string using regular expressions

I have the list : a1 = {"struct name1 {","struct name2{","struct name3{","struct name4{", "struct name5{","struct lastStruct{"} I tried to extract the ...