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
57 views

Suppressing DateString default behavior when parts of date are missing

By subsampling data from a Excel spreadsheet I have created a Mathematica dataset that I then seek to modify by applying various functions to the fields to convert these data into a different flat ...
4
votes
1answer
51 views

String Pattern to match “x by y”

I'm trying to create a string pattern which will match either (with quotes included): "x by y" x by y 'x by y' I've tried to use the following pattern: ...
4
votes
2answers
110 views

Deleting unwanted elements in lists of words

I have imported Alice in Wonderland into Mathematica. I have made a list of the sentences and further divided them into words. Now suppose, nominally, I have the following list: ...
1
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1answer
46 views

Deleting all whitespace in mathematica expression

I have copied and pasted some output from a .log file into a mathematica notebook however the resulting output in the notebook contains many whitespaces between lines. Is there a way to eliminate ...
3
votes
3answers
202 views

Selecting elements from lists based on string pattern

I have a list: lis = {{"abc", 1, 2}, {"cde", 3, 4}, {"fgbc", 5, 6}} I would like to select list items that have first elements that end in the string "bc" to ...
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0answers
14 views

Transform String to Expression [duplicate]

I have a variable postVector and another called CHKpostVector. Both are global variables. Only the variable ...
0
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0answers
44 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 ...
0
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1answer
54 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: ...
5
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3answers
80 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
106 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
62 views

Manipulation of two lists of strings and integers

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

Complicated formatting of a string list

I have the following list: ...
0
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1answer
65 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
30 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 ...
5
votes
2answers
73 views

FileNames not containing a given extension

I would like to get all the files in a directory without a given extension. To get them with that extension is quite simple: FileNames["*.<myExt>", myDir] ...
0
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1answer
49 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
64 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
106 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
71 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
67 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
76 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
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1answer
43 views

StringSplit with SubscriptBox

My code has a problem ...
3
votes
2answers
95 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
90 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 ...
6
votes
2answers
246 views

Joining strings in 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
64 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
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
109 views

Finding the frequency of letters in a string

Given the following string: ...
2
votes
1answer
63 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
60 views

Selecting elements using two lists

I made the following list: ...
2
votes
1answer
43 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
772 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
259 views

Delete all French stopwords [duplicate]

I have a list of french stopwords: ...
7
votes
1answer
446 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
133 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
156 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
127 views

Convert ASCII Characters to Mathematica Input Form

I have the following pure ASCII character list: ...
2
votes
1answer
112 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
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3answers
240 views

Replacing Strings at specific locations

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4
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0answers
96 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
55 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
141 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
217 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
160 views

Selecting an element of a matrix that contains specific string

I have the following matrix: ...
2
votes
1answer
41 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
71 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
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0answers
103 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
363 views

How to scramble a string of text?

How to implement foo function which works like this: foo @ "abcdef" "fdbace" Steps: <...