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Questions tagged [string-manipulation]

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

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1answer
60 views

Resolution of string lists to smaller components II

Some weeks ago, I posted a question which involved creating string pairs from a list of string elements. One of the answers posted (by Kuba) worked very well until I found an example where it didn't. ...
1
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3answers
121 views

Finding the frequency of letters in a string

Given the following string: ...
2
votes
1answer
67 views

How to refer to a character group without ambiguity in a regex?

Suppose I want to realize a replacement in a string: "aabbcc11dd ee" -> "aabbcc112dd ee", I can use a regex like this within ...
1
vote
1answer
61 views

Selecting elements using two lists

I made the following list: ...
2
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1answer
44 views

Logically equivalent Through expressions, but one produces an error

I have a list of three lists of strings. Thus, MatchQ[{{__String}, {__String}, {__String}}] is True. I would like to extract all ...
7
votes
4answers
781 views

Add a space after a ending dot of a sentence

How can I add a space after the ending dot of a sentence? So dots like in "1.2" should be unaffected. Also if there is already a space, then there should not be a ...
4
votes
1answer
265 views

Delete all French stopwords [duplicate]

I have a list of french stopwords: ...
7
votes
1answer
447 views

A strange verb from Mathematica's WordList

The first word returned by WordList["Verb"] is "aah", even though I think it actually an interjection, I still wonder whether ...
3
votes
2answers
136 views

Merge associations with the same keys, same in a sense by user's definition

I know that it is the standard functionality of Merge to combine the values of the same keys among associations. Now I would like to deal with a situation in which,...
5
votes
2answers
157 views

Convert Unicode to Math Input

Any Ideas how I could convert unicode to Mathematica Input ? For instance : I have the following Unicode: test= {"a", "\\:1d62"} So here I would like to convert ...
2
votes
1answer
132 views

Convert ASCII Characters to Mathematica Input Form

I have the following pure ASCII character list: ...
2
votes
1answer
114 views

Convert Math in Text Form to $\LaTeX$ Form

I have the following math as a text file: text = {"aᵢ₁β₁ + aᵢ₂β₂ + ... + aₙ₁βₙ = bᵢ"} Is it somehow possible to convert it clean $\LaTeX$ Input ? The Goal: I ...
4
votes
2answers
135 views

Delete Consecutively Repeated String

I have the following text: text = {"hello","hello","hello","c","a","e","e","hello","hello"} Now I would like to do the following: Delete every string that is "...
2
votes
3answers
240 views

Replacing Strings at specific locations

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4
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0answers
98 views

WordCloud Produces strange squares

I am trying to make a wordcloud from this txt file: https://ufile.io/dqhyd Source: How to delete certain words from a word cloud in mathematica? ...
1
vote
1answer
61 views

Excluding some words in string patterns

I'm working on a program that deals with 'part-of-speech tagged' strings such as "I_Pronoun am_Verb a_Determiner human_Noun". What I want to do is replace each verb ...
11
votes
1answer
142 views

Lexical scanning and parsing in a toy language

I'm trying to do lexical scanning and parsing in a toy language. One with just functions (of the form $f(a,\,b,\,c,\,...)$, ended with semicolons) and special tokens (such as ...
12
votes
1answer
222 views

OrderedQ with string arguments

I don't find these results consistent: OrderedQ[{"a", "A"}] True OrderedQ[{"a2", "A1"}] False Is there any ...
4
votes
1answer
175 views

Selecting an element of a matrix that contains specific string

I have the following matrix: ...
2
votes
1answer
43 views

Character Encoding Problem with ReadList

I have a .srt file (subtitle file) with the following text: Chapitre 1 : Systèmes d'équations linéaires et matrices However when I import it into Mathematica, using: ...
3
votes
1answer
73 views

Rewriting Text-blocs

I have three sets of text blocs (actually many more...) which show part of a complete text. However the partitioning of the original text was not done correctly as some sentences were split between ...
3
votes
0answers
73 views

Match Polish letters

I am quite confused about the following cases, in Mathematica 9.0.1.0: LetterQ["ł"] StringMatchQ["ł", WordCharacter ..] The first case gives ...
12
votes
0answers
105 views

What changed in String handling between 11.0 and 11.3?

I was trying to optimize some String-handling code here using my standard trick of converting it to a list of bytes first and using basic list operations instead of ...
0
votes
3answers
377 views

How to scramble a string of text?

How to implement foo function which works like this: foo @ "abcdef" "fdbace" Steps: <...
1
vote
1answer
58 views

Simple way to apply a rule (from list of rules) based on the presence of the a rule key within a string

If I have some strings eg: str1 = "12-26b-14a"; str2 = "12-21h-14"; and I want to replace the string with a value based on the following rules: ...
4
votes
3answers
129 views

List rearrangment with joining of strings

I have a list of strings: lis = {{"a","b","x"},{"d","e","y"},{"a","b","z"},{"d","c","x"},{"a","b","w"}} I would like to use StringJoin on the last elements where ...
15
votes
4answers
2k views

What stopwords list is the Wolfram language using?

The documentation of DeleteStopwords only says that it "uses a standard, built-in list of stopwords". So what is it exactly? Update Now that it is said "standard"...
1
vote
1answer
54 views

RegionPlot: building a list of inequalities

I have a function like this: Myfunction[x_,y_]:={Max[1, Min[x, 2]], Max[1, Min[y, 2]]} and I need to do a RegionPlot like ...
3
votes
2answers
93 views

How to remove adjacent date strings in a list?

Given a list as list = {"2018-9-1",1,2,3,"2018-9-2","2018-9-3",4,5,6,"2018-9-5",7,8,9,"2018-9-6","2018-9-7",10,11,12,"2018-9-8",13,14,15,"2018-9-9",16,17,18} or ...
11
votes
3answers
472 views

Loop over a list of strings and increment letter count in a corresponding sublist

I have a 2D list as follows: ...
0
votes
1answer
51 views

Joining strings in FrameLabel [duplicate]

I want the $ x $-axis of this plot to be $ \tau/\alpha_e $ without the "+", but I'm unable to do this without Mathematica putting the $ \alpha_e $ to the front of the string. ...
13
votes
3answers
430 views

Generating a pattern from user-defined rules

I want to generate a list of $L$ and $S$ according to the following rule: upon each iteration, replace $S \rightarrow L$ $L \rightarrow LS$ Such that, starting with $L$: $ L \rightarrow LS \...
9
votes
4answers
566 views

How to replace numbers in a string?

I have a long string list: ...
8
votes
2answers
239 views

Deleting certain integers from string list

I have a list of strings: lis = {"a","1","b","2","c","3","a","d","4"} and would like to get: ...
2
votes
1answer
44 views

Matching combinations of StringExpressions and general patterns i

Is there a clean way to match patterns that combine general patterns and ?StringExpression For example, Cases will not match ...
5
votes
2answers
203 views

Split up word pairs in string based on semantic textual analysis

I have several hundred sentence-strings with joined words. They were extracted from a text (and are in sequence). Here is an example of one: ...
2
votes
0answers
70 views

How to render an emoji? [duplicate]

Is there any way to get Mathematica to render emoji's from unicode strings? For instance, ":1F600" should be 😀but it renders as an "oulinded question mark": Also, ...
3
votes
1answer
60 views

Inconsistent behaviour using string with superscript as label

This might be a silly question, but actually I lost a bit of time to figure out what I was doing wrong and now I want to understand better. Moreover, I'm not sure if the behaviour I see is a bug or ...
2
votes
1answer
53 views

How to specify optional string parameters in a function signature and identify the pattern

As a newbie, I've got a rather simple question. I would like to define a function that accepts one of a few possible strings. I.e., I wish to do the following. ...
5
votes
0answers
50 views

Pattern for string that does not contain x, constrained to shortest matches only [duplicate]

I need a pattern for a string that does not contain a specified string, while at the same time respecting the mandate to match only shortest sequences. For example strings bracketed by ...
1
vote
1answer
58 views

Is this decryption function idiomatic?

This is my first non-trivial Mathematica notebook, which I wrote for a cryptology homework. It encrypts/decrypts strings using an affine cipher. Is the code readable/idiomatic? How could it be ...
4
votes
1answer
124 views

Jaro distance in MMA

I'm trying to program Jaro distance as requested by this page I've done the following code that works well for the next two pairs ("MARTHA", "MARHTA") and ("DIXON", "DICKSONX") but when I try with ("...
0
votes
0answers
48 views

How should I import list of results with scientific numbers so they can be used for further calculation?

I have a file, listOfResults.txt, consisting of many rows of which the following is an example: ...
0
votes
0answers
73 views

How to rasterize huge fonts

If ...
0
votes
2answers
96 views

How to properly write fraction in style

I would like to write the following for the legend of a curve : $$ Theta = \frac{\pi}{2}$$ Where the value $\frac{\pi}{2}$ is actually in a variable named $Theta$ (same name as the text on the lhs ...
1
vote
2answers
43 views

Changing the style in a list

I have the following list, l={{"a", "b"}, {"c", "d"}} I was wondering how can I convert it into: output: {"ab", "cd"}
0
votes
1answer
88 views

Generating list of labeled string [closed]

I want to generate a table that gives the following output: output: {"x1", "x2", "x3", "x4", "x5"} I have tried: ...
2
votes
4answers
153 views

Splitting a binary number into smaller parts and converting each smaller part back to decimal

This is my first Mathematica post and I would be obliged if you could be patient with me. I have the following large binary number $1111010010001001100011010101111110000101101110110011100101$ which I ...
3
votes
2answers
215 views

Deleting unwanted spaces in a list of string

I have a badly structured data and I need to clean it up, suppose I have the following list: l={{"a","b","c"},{"e"," f","g"},{" a"," b"}} As you can see they ...
7
votes
2answers
230 views

Select UPPER CASE list items with spaces and punctuation

I have a sample list that includes people's names in Title Case, and their companies in UPPER CASE. ...