Linked Questions
14 questions linked to/from How to 'merge' a list like FromDigits, but with a mixture of numbers and symbols?
17
votes
5
answers
981
views
Opposite of StringSplit
What is an appropriate command that does the opposite of the following?
StringSplit["a b c d e f g"," "]
- 7,535
11
votes
3
answers
214
views
StringReplace adds "~~" to words with Tooltip
I'm adding tooltip to certain words in a text. I guess since words with tooltips are not considered as strings, it gives the ~~ operators before and after the word ...
- 113
9
votes
2
answers
1k
views
How to name a variable with the value of another variable?
A simple but very important (at least for me) question.
In some languages for defining a variable, for example, we can do:
i=10
"d"&i=30
So I have defined the variable d10, and...
d10=30
...
6
votes
3
answers
1k
views
Understanding Function and Variable in Mathematica for beginner [closed]
I'm reading the book of Leonid Shifrin, and I love the way the book explains the core in Mathematica. As everything is an expression, now I understand that, there ...
- 1,731
5
votes
7
answers
4k
views
Getting a String from a list of strings
Is there a way to write down Mathematica with a string such as:
{"M","a","t","h","e","m","a","t","i","c","a"}?
- 8,477
3
votes
1
answer
164
views
How to use a variable within StringJoin
I would like Mathematica to symbolically line up partial derivative symbol with a value stored in variable. I wrote this simple code below
...
- 33
3
votes
1
answer
163
views
Iteration variable in variable [duplicate]
Is it possible to create following list by some sort of iteration?
{a1,a2,a3,...,a100}
I cannot think of any way to append a to
...
- 363
2
votes
5
answers
997
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"
...
- 1,658
2
votes
1
answer
333
views
Generating plot legends [duplicate]
I want to generate a list as below for the legend of my plot,
{D=0, D=0.5, D=1, ...}
using the code
...
- 565
2
votes
1
answer
582
views
How to Convert a Number to String for Export a Table
I am generating a table with 4 columns, wheras only the columns 3 and 4 have the same length.
...
- 311
2
votes
1
answer
203
views
How to joint symbolic expressions together [duplicate]
I want to joint symbolic expressions together to create a another symbolic expressions.
one way to do that is as follows:
...
- 19.6k
1
vote
1
answer
150
views
How to generate a training set in an automatic way?
This question is related to [my previous item][1] where arithmetic with machine learning was considered. The results of the Predict command were not good because of ...
1
vote
1
answer
48
views
Some challenge for a Table mixing between output number Variables and ToString symbols [duplicate]
How can I output a series of data, ranging from s00, s01, s02, s10, s11, s12, s20, s21, s22; by writing a table with s is a fixed, and m and n are running parameters, for example:
...
- 843
0
votes
1
answer
1k
views
Is it possible in mathematica to use dynamic names of variables [duplicate]
I have variables in my code following the following notation :
theta12, theta13, theta14 etc..
I would check the values of all this variable so I could write an if condition for each theta but I ...
- 2,085