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

learn more… | top users | synonyms (2)

11
votes
6answers
253 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
29 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: ...
3
votes
1answer
86 views
7
votes
4answers
427 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
55 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 ...
2
votes
1answer
89 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
39 views

SequenceAlignment behavior

When I do: SequenceAlignment["-0.999995756767227832383453368554576431549","-0.999995756767227832383346049698547342279"] I get: ...
3
votes
2answers
127 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
36 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
80 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 ...
4
votes
4answers
238 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
61 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
50 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
77 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
189 views

Regular expression too large problem

pattern = Names["*"]; StringMatchQ["Bold", pattern[[1 ;; -1 ;; 2]]] (* True *) StringMatchQ["Bold", pattern] Error Information: ...
3
votes
1answer
36 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
87 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: ...
8
votes
2answers
116 views

Convert recursive RegularExpression to StringExpression?

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

import string to data

...
4
votes
3answers
174 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
61 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 ...
4
votes
1answer
142 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
64 views

Strings with exclamation marks in Mathematica [duplicate]

Given this input FullForm[ToString[TraditionalForm[x]]] Mathematica outputs "\!\(TraditionalForm\`x\)" It seems like ...
6
votes
1answer
115 views

Limit characters/digits entered into InputField

When using InputField, whether setting the input type as a Number or String, is there a way ...
1
vote
1answer
55 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 ...
6
votes
3answers
278 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: ...
5
votes
5answers
190 views
4
votes
1answer
64 views

How to convert expression with Subscript to string

I've tried ToString[], but it doesn't work properly with subscripts: How to convert expr with subscript to string with exactly the same FullForm that "expr" has?
4
votes
1answer
91 views

Parsing string with nested information

I am trying to parse a string, but I have no idea how to solve the following problem ...
0
votes
2answers
84 views

Decimal-to-ASCII conversion

I have to write a program that converts a number (decimal notation) to an ASCII string. For example, x = 26728 (or 0x6868) and the string is "hh". I wrote this, but it seems that it is not the ...
1
vote
0answers
73 views

Geodesy without units?

Suppose I'm interested in the latitude of Los Angeles and I do the following: ...
0
votes
1answer
65 views

Data file organized in strings

I am working in a data set : The original question, They are strings of thousands stars,and each one contains a lot of parameters, and the following item is called identifies, they are the names ...
7
votes
1answer
133 views

LetterCharacter for Cyrillic symbols

Why does the code StringMatchQ["ы", LetterCharacter] return False? Probably because: ...
0
votes
2answers
155 views

Exctrating data information from a file.txt

I really did previous long search in the site and I couldn't find any answer that might help me. So I am asking it. I have the following data set, ...
2
votes
1answer
89 views

Optimizing alphametrics code

First of all, thank you all in this great community. I have been reading a lot of threads about Mathematica optimization learning things like using Compile ...
0
votes
1answer
81 views

How to fill a Marshal buffer with whitespace using NETLink

Further to Todd Gayley's answer on string handling in a DLL function, I have the following code: ...
0
votes
0answers
30 views

Error when converting a string involving superscript after closing square bracket using ToExpression

I would like to store a piece of code in the form of a string, make some string transformation to it and get the new code evaluated using ToExpression. Everything works just fine but one: if there is ...
3
votes
2answers
140 views

how to extract the string using regular expressions

I have the list : a1 = {"struct name1 {","struct name2{","struct name3{","struct name4{", "struct name5{","struct lastStruct{"} I tried to extract the ...
10
votes
2answers
147 views

Unexpected result from StringReplace

The following works as expected. StringReplace["xxxyxz", "x" ~~ _ -> "ww"] "wwwwww" And so does this. ...
3
votes
1answer
47 views

How can I lookup the grammatical type of a word?

It seems WordData isn't complete: ...
1
vote
1answer
134 views

how to make a recursive function to analyse this file

I am stuck at this problem beginning We assume we have keyword k, and the structure in the file: file.txt ...
1
vote
1answer
61 views

Find item in a big list that contains a specific string [closed]

I have a huge list with 17,576 (=26^3) items in it. All items consist of a long string of text about 1,200 or so characters long. These strings were all generated ...
1
vote
1answer
34 views

Creat a global variable from an argument and being able to use it as a numeric input

I want something like this: myfun[j_]:=Block[ {ans}, ans = Range[j]; "phi"<>ToString[j] = Total[ans]; ]; The procedure is just an illustrative ...
0
votes
1answer
55 views

TraditionalForm for PlotLabel with a parameter

This is a simple variation/spin off of this question, but I am having trouble. In the second example in the original question, I'm trying to get the $a=$ in the ...
5
votes
3answers
412 views

Camel hump string split

Given System names of 2 or more characters: systemNames = Names["System`*"] // Select[StringLength[#] > 1 &] ; Is ...
3
votes
3answers
215 views

String pattern defined by number of characters

I want to extract non-overlapping substrings from strings with only four possible characters a,b,c,d. These strings will always have equally many "a" and "d" characters. The substrings x I want satisy ...
16
votes
2answers
550 views

Why is TextString[-0.5] a positive number?

Fixed in 10.0.2 I want to format numbers in decimal notation and chose TextString for this task. But today, when looking at the final result of my 3-weeks ...
2
votes
1answer
36 views

Linear function on strings using UpValues

I have two functions Sup and Sdown that take a string of letters with allowed characters ...
6
votes
1answer
184 views

Returning computable numbers from WolframAlpha

WolframAlpha["Apple company revenue", {{"Result", 1}, "Plaintext"}] Desired output 182800000000 ...