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

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1
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1answer
65 views

Change parentheses to square-brackets when using CForm

I'm not experienced with Mathematica, but am learning to appreciate its awesome power for manipulations. I get the an expression like this when using CForm (I cut ...
0
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1answer
70 views

Dataset fails on StringMatchQ warning due to Missing value

Missing values are a pain mathematically and computationally in general not just in WL, but I think this problem is more related to Dataset handling of warnings: ...
2
votes
2answers
125 views

Input a non-string input — output as a string

I am trying to create a function that needs to transform its input into a string. The objective is to transform a $\LaTeX$ mathematical expression into an executable Mathematica expression. ...
0
votes
2answers
46 views

How do I use DictionaryLookup to exclude words with certain phrases?

I'm looking to use DictionaryLookup to search the English dictionary for words that don't contain certain strings. For example, I want to exclude ...
1
vote
1answer
78 views

Importing Data Issue, Breaking Up Elements

I am trying to import a comma delimited text file as a Table and I am having two issues: First, the file imports all of the numbers that should be separate columns as a single string. This is not ...
0
votes
2answers
100 views

How to remove unnecessary brackets in one formula

I have some string,like "3+(3*(2+5))", obvious that some brackets are unnecessary. It can write like "3+3*(2+5)", so I try to use Inactive. ...
5
votes
3answers
121 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
160 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
83 views

Dealing Repeated pattern in StringReplace

A problem about StringReplace When I'm running into this problem possible [bug] ...
4
votes
3answers
236 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
156 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
39 views
1
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2answers
64 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
225 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
101 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
49 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
714 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
202 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
98 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
92 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
129 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 ...
33
votes
2answers
800 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
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 ...
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 ...
2
votes
1answer
132 views

How to parse string to expression? [closed]

When trying to make a string an expression I see some wrong results: ...
13
votes
7answers
785 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 ...
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 ...
3
votes
1answer
50 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
112 views
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
80 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
72 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
136 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
47 views

SequenceAlignment behavior

When I do: SequenceAlignment["-0.999995756767227832383453368554576431549","-0.999995756767227832383346049698547342279"] I get: ...
10
votes
3answers
188 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
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
113 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
304 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
75 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
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
226 views

Regular expression too large problem

pattern = Names["*"]; StringMatchQ["Bold", pattern[[1 ;; -1 ;; 2]]] (* True *) StringMatchQ["Bold", pattern] Error Information: ...
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: ...
9
votes
2answers
165 views

Convert recursive RegularExpression to StringExpression?

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

import string to data

...
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 ...
1
vote
2answers
82 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 ...