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

learn more… | top users | synonyms (4)

5
votes
3answers
123 views

Elegant way to drop rest of a string at the occurence of a character

For example, I have a string "ahfiehfke$jfwfjejf0". Is there an elegant way to drop all characters after "$"? I know loop ...
10
votes
2answers
221 views

Comparing natural language strings

I have a large spreadsheet with thousands of rows/columns of text. Some are saying essentially the same thing but in different ways. When you enter a natural language question Wolfram Alpha makes a ...
1
vote
1answer
114 views

Dealing Repeated pattern in StringReplace

A problem about StringReplace When I'm running into this problem possible [bug] ...
4
votes
3answers
346 views

How could I transform the YYYYDDD date string/Integer to YYYYMMDD date string?

suppose I have lots of YYYYDDD date Integers which look like(for example): ...
1
vote
5answers
165 views

How to split list to strings?

Considering a list: lst = {"1", "2", "3", "4", "5", "6"} How can I have two strings : str1 = "1, 2, 3" str2 = "4, 5, 6" ...
0
votes
2answers
54 views

string and subscript in label

...
1
vote
2answers
99 views

Trouble with ToString and StringForm

The command ToString[StringForm["SomeText=`` as well as OtherText=``.", "textA", "textB"], FormatType -> InputForm] produces the output ...
2
votes
4answers
274 views

How to switch from array to string?

Considering we have an array: a = {2/3, 4/5, 9/7, 3/7, 1/7, 1/9}; How can I get this to be: "2/3 4/5 9/7 3/7 1/7 1/9" ...
0
votes
1answer
115 views

Replace a number in a string

I have several data files I want to import. The names of these files consist of a part that is the same for all of them and a number which identifies them, as in ...
3
votes
0answers
55 views

Error when combining Except, “*” and an additional character

Anyone knows why StringMatchQ["x", Except[{"1", "2"}]] StringMatchQ["x", Except[{"*"}]] StringMatchQ["x", {"1", "*"}] (* without Except *) all work as ...
5
votes
4answers
721 views

A too complicated lookup

I have the following keys: nm = {"bay", "ica", "rat", "tat", "dax", "dow", "sp5", "nas", "mean", "total"}; which I want to use to find a corresponding entry in ...
1
vote
3answers
207 views

How to manage list of list of rules?

Considering we have a list: str = "{1 -> {a -> aa, b -> bb}, 2 -> {2a -> \"{b -> bb}\"}}" Bringing this to expression gives: ...
1
vote
2answers
132 views

How do I use ReplaceAll to replace strings of a specified form?

Why is "Xabcde" /. "X" ~~ e__ -> e "Xabcde" and not "abcde"
2
votes
5answers
162 views

How to convert string to integer list?

Saying we have a string: "1 2 3 4 5 6" I want to convert this to integer list. First I do: ...
2
votes
3answers
154 views

How to delete a pattern from String?

Having a string like : "{Aaaa -> a, Bbbb- > b, Cccc -> , Ddddd -> c, Eeeee -> , Fffff -> e}" I want to delete the parts that contain ...
35
votes
2answers
837 views

String-manipulation bugs in v10.1

Fixed as of 2015-04-06 via paclet update. The new version 10.1 has introduced some strange (possibly buggy) behaviour compared to v10.0: ...
0
votes
1answer
64 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 ...
0
votes
1answer
48 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 ...
2
votes
1answer
212 views

How to parse string to expression? [closed]

When trying to make a string an expression I see some wrong results: ...
14
votes
7answers
837 views

How to sort digits in a string while keeping other characters untouched?

Now there is a string with digits and letters, for instance, "95uge678r3gi89hgfe30kgh063d51". And the expected output is ...
16
votes
5answers
620 views

Opposite of StringSplit

What is an appropriate command that does the opposite of the following? StringSplit["a b c d e f g"," "]
0
votes
1answer
48 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
48 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 ...
3
votes
1answer
58 views

Sort Unicode characters

Sorting ASCII phrases works fine: Sort[{"albatrob", "abo", "dict", "star", "mangel", "m"}] (*{"abo", "albatrob", "dict", "m", "mangel", "star"}*) But unless I'm ...
3
votes
1answer
152 views
7
votes
4answers
471 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
157 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
79 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 ...
2
votes
1answer
177 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 ...
0
votes
2answers
50 views

SequenceAlignment behavior

When I do: SequenceAlignment["-0.999995756767227832383453368554576431549","-0.999995756767227832383346049698547342279"] I get: ...
11
votes
3answers
331 views

How do I make a string literal without having to escape backslashes?

I'd like to say something like: foo = @"\abc\def\ghi" instead of foo = "\\abc\\def\\ghi" How do I do this? This would ...
3
votes
2answers
260 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
45 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
149 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 ...
5
votes
5answers
350 views

How do I pad numbers to the left so that all are the same length?

I have a list of numbers like {-6, 1, 3, 23} and want to get a list of strings, all of the same length, with zeros padding on the left as needed, like ...
0
votes
2answers
90 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
1answer
84 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
89 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
279 views

Regular expression too large problem

pattern = Names["*"]; StringMatchQ["Bold", pattern[[1 ;; -1 ;; 2]]] (* True *) StringMatchQ["Bold", pattern] Error Information: ...
4
votes
1answer
83 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
101 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: ...
10
votes
2answers
206 views

Convert recursive RegularExpression to StringExpression?

Consider the following expression for matching balanced brackets: ...
0
votes
2answers
60 views

import string to data

...
4
votes
3answers
196 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 ...
1
vote
2answers
102 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 ...
5
votes
1answer
239 views

Extra spaces when exporting strings into pdf (bug, linux)

Rationale: Imagine you would like to create a publication quality figure in Mathematica, from under Linux. Naturally, it will contain text/labels. Problem: Here is a simple string ...
3
votes
1answer
134 views

Strings with exclamation marks in Mathematica [duplicate]

Given this input FullForm[ToString[TraditionalForm[x]]] Mathematica outputs "\!\(TraditionalForm\`x\)" It seems like ...
7
votes
1answer
221 views

Limit characters/digits entered into InputField

When using InputField, whether setting the input type as a Number or String, is there a way ...
2
votes
1answer
77 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 ...
8
votes
3answers
558 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: ...