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Questions tagged [string-manipulation]

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

1
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0answers
27 views

Ignoring text when converting strings of text to numbers

I have a string of measurements--mostly numbers, but occasionally an NA. Right now Mathematica is reading it all as text, so I'm using ...
1
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1answer
91 views

Interpreting Mathematica code on black holes

I am trying to understand the code written down on page 7 of this document (code is in Mathematica) I understand pretty much all of the code on the previous page needed to setup the page 7 code (...
0
votes
1answer
40 views

Modification to the list of string

Suppose we have a list of the following: l={"applejuice","lemon_juiceginger"} How can one modifies this to read as: ...
4
votes
2answers
59 views

StartOfLine and EndOfLine not working well inside Shortest

Suppose that I want to replace lines containing "b" with a new "XXX" line. This works as expected with regular expressions: ...
2
votes
1answer
28 views

DateObject ambiguous string interpretation?

I try to enter the following input, but receive an error message: DateObject["12/1/2016", DateFormat -> {"Month", "/", "Day", "/", "Year"}] despite having ...
1
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3answers
59 views

Manipulation of two lists of strings and integers

I have the following lists: ...
5
votes
1answer
71 views

Complicated formatting of a string list

I have the following list: ...
0
votes
1answer
33 views

Convert string representation of matrix to matrix

I have a Python script which generates and outputs Mathematica matrices. I use RunProcess to run my Python script and I extract the StandardOutput which is the Mathematica matrix as a string. What I ...
1
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0answers
27 views

Remove expression with matched braces from string

I am writing a LaTeX document where the custom command \chg{...} highlights changes in some color. Here I am, with a document of about 50 of those. Sure, one could ...
2
votes
1answer
27 views

FileNames not containing extension

I would like to get all the files in a directory without a given extension. To get them with is quite simple: FileNames["*.<myExt>", myDir] But instead I ...
0
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1answer
40 views

Convert number to list [closed]

FromDigits will convert a list to a number, i.e. FromDigits[{5, 1, 2, 8}] > 5128 Now, I want to convert ...
2
votes
1answer
52 views

Have a String of letters with different font sizes - LineLegend

There's a Plot whose legend has symbols with subscripts and regular text. The words that have subscripts appear to shrink in size and looks out of place in comparison to the rest of the legend. Was ...
3
votes
3answers
101 views

Convert Latin to e.g Gothic

Sorry for the very simple question but I can't seem to find an answer anywhere. I have a list of Latin letters, e.g. {a, b, c, d...}. I want to convert them to the corresponding Gothic letters. How ...
4
votes
1answer
37 views

Longest Repeated Substring

Is there a solution in Mathematica to the problem of finding the longest substring of a sequence that occurs at least twice.For example {1, 2, 3, 4, 5, 2, 3} has ...
2
votes
1answer
59 views

How to Text justify that includes StringSplit and MapAt in it?

I am preparing a practical class of physics in which I need to justify the following text that is very extensive. But when I use StringSplit or ...
4
votes
1answer
74 views

String Join but not fully

Suppose I have the following string list: l={{"a","dog"},{"the","pen"}} how can I turn this to {{"a dog"},{"the pen"}} I ...
0
votes
1answer
37 views

StringSplit with SubscriptBox

My code has a problem ...
3
votes
2answers
71 views

Having Mathematica replace DOS line breaks with UNIX in files

Say I have a file named "Silly.tex" which has \r\n line breaks. Is there a way to get Mathematica to convert it to only have \n line breaks? You can find such a file with DOS line breaks at: https://...
3
votes
1answer
60 views

How to change node color in .dot file using pattern matching?

For example I have a dot file that describe a decision tree or binary tree In the file, the color of node is always gold, so I try to change it according the number in ...
5
votes
2answers
218 views

Rearrangement of lists of strings

I have a list: lis = {{"abc","def","ghi"},{"jkl","mno"}} and wish to get: res = {"abc def ghi","jkl mno"} This: ...
2
votes
1answer
59 views

How to write single slash in string programmatically

Consider the function: unicode[numericLetters_List]:=StringJoin@Reverse@Cases[numericLetters,x_:>If[x!=" ","\:"<>x,x]]; now ...
1
vote
1answer
55 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
vote
3answers
82 views

Finding the frequency of letters in a string

Given the following string: ...
2
votes
1answer
53 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
45 views

Selecting elements using two lists

I made the following list: ...
2
votes
1answer
42 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
745 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
233 views

Delete all French stopwords [duplicate]

I have a list of french stopwords: ...
6
votes
1answer
438 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
122 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,...
4
votes
1answer
132 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 ...
1
vote
1answer
62 views

Convert ASCII Characters to Mathematica Input Form

I have the following pure ASCII character list: ...
2
votes
1answer
99 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 ...
3
votes
2answers
128 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
237 views
4
votes
0answers
73 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
41 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
128 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
211 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
85 views
2
votes
1answer
34 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
69 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
67 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
94 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
203 views

How to scramble a string of text?

How to implement foo function which works like this: foo @ "abcdef" "fdbace" Steps: <...
1
vote
1answer
44 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
125 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 ...
14
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
36 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
89 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 ...