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

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0
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2answers
43 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
48 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
0answers
44 views

Is there a better way to search a string so that I don't get false positives? [migrated]

I've been using this equation to find primes of a specified range, in this example the range is 10 to 10000. Go ahead and try it out, your monitor will not catch fire. The problem I'm now having is ...
0
votes
2answers
73 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 ...
0
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0answers
58 views

Need help with formula for generating primes [migrated]

I've done this: N[Sum[(10^(n*2) + 1)/(10^(n^2*2)*(10^(n*2) - 1)), {n, 1, Floor[49^(1/2)]}], (49)*2] ...
3
votes
2answers
183 views

Regular expression too large problem

pattern = Names["*"]; StringMatchQ["Bold", pattern[[1 ;; -1 ;; 2]]] (* True *) StringMatchQ["Bold", pattern] Error Information: ...
3
votes
1answer
33 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
83 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
103 views

Convert recursive RegularExpression to StringExpression?

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

import string to data

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4
votes
3answers
173 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
56 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
128 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
59 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
105 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
53 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
259 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
184 views
4
votes
1answer
61 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
88 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
78 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
70 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
128 views

LetterCharacter for Cyrillic symbols

Why does the code StringMatchQ["ы", LetterCharacter] return False? Probably because: ...
0
votes
2answers
154 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
76 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
75 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
29 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
138 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
145 views

Unexpected result from StringReplace

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

How can I lookup the grammatical type of a word?

It seems WordData isn't complete: ...
1
vote
1answer
133 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
57 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
54 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
400 views

Camel hump string split

Given System names of 2 or more characters: systemNames = Names["System`*"] // Select[StringLength[#] > 1 &] ; Is ...
3
votes
3answers
210 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
549 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
181 views

Returning computable numbers from WolframAlpha

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

Insert a linebreak and character repeatedly into a matrix output which is in fortranForm

Suppose I have a very long string which is a11 element of matrix a11=2*gopsv-2*Bgopsvw+2*acgmops*v+2*cgmopsv*B-2*acgmopsvB+3*gmopsvB-3*BgmopsvwB+m*w2*B +5*acgm2 +opsvB -ac*m2*w2*B +cgm2*opsvB* - ...
1
vote
1answer
52 views

Importing file as a string causes a puzzle

I generate simple txt file and import it as follows: a = Import["binary.txt"]; b = Import["binary.txt", "String"]. It appears then that lengths of imported strings ...
3
votes
2answers
81 views

Removing non-word characters in certain parts of a string

I would like to ask how I can remove non-word characters from a string, but only in certain cases. I have read this article, so I know how to get the words out of a string. My text is however a bit ...
1
vote
2answers
113 views

How to solve ArcSinh equation for many differents parameters?

I am totally stuck trying to solve the equation below (1/2) x Sqrt[1 + 4 a^2 x^2] + ArcSinh[2 a x]/(4 a) == d Where a and ...
4
votes
1answer
222 views

How do I remove single-character whitespace between words, leaving multiple, contiguous, whitespace characters unchanged?

In a string, I want to remove only the single-character whitespace between printing characters, leaving any multiple, contiguous, whitespace characters between printing characters unchanged? What is ...
1
vote
2answers
63 views

Generate a sequence of names such as a1, a2, a3 [duplicate]

How do I generate the sequency {disp1, disp2, disp3, ...}? I tried the following but it didn't give me what I expected: ...
3
votes
5answers
208 views

How to join two strings one of which is Subscript?

If I write this one str=Subscript["x","y"]; StringQ[str] False How can I get str as string?
2
votes
4answers
127 views

Finding relevant parts in XML document

My qyestion is about a XML document and finding parts of strings. test = Import["C:\\Users\\filename.xml", "XMLObject"] This gives the following output: ...
1
vote
1answer
73 views

Transforming a nested list for textual output

Hello I have a data structure based on lists, with items, subitems and subsubitems, and I want to display a textual output with a description. ...