Linked Questions
13 questions linked to/from How do I check if any element in a list is positive?
207
votes
3
answers
55k
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Alternatives to procedural loops and iterating over lists in Mathematica
While there are some cases where a For loop might be reasonable, it's a general mantra – one I subscribe to myself – that "if you are using a ...
- 273k
84
votes
4
answers
7k
views
Using a PatternTest versus a Condition for pattern matching
My last question to the site resulted in several answers that involve using pattern matching in Mathematica, a feature I wasn't very familiar with at the time. I am currently reading Mathematica ...
- 1,175
37
votes
7
answers
4k
views
Are there "All" and "Any" functions in Mathematica?
In Python, there is a function all which returns true if all of its arguments are true, and any which returns true if at least ...
- 4,961
45
votes
5
answers
10k
views
Fastest way to calculate matrix of pairwise distances
It is a very common problem that given a distance function $d(p_1,p_2)$ and a set of points pts, we need to construct a matrix ...
- 236k
8
votes
4
answers
1k
views
How to draw a hanging rootogram in Mathematica?
I am trying to plot a hanging rootogram of some data in Mathematica. I can't seem to find a built in function for it, while simply using Histogram (on "transformed" ...
- 91
7
votes
3
answers
5k
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Efficient way to test if all the elements in a list are Integers? [closed]
Consider a list such as
s = {1, 2, 3, 3, 5, 6, 3}
With IntegerQ[number] , you know if ...
- 3,261
5
votes
6
answers
794
views
Selecting sublists of different length if at least one element of the sublist fulfills a criterion
I have the following list, containing sublists with 1,2 or 3 elements.
...
- 960
6
votes
5
answers
683
views
Check whether array has only constant entries?
I have an array arr with n entries. Now I want to check whether
...
- 2,192
9
votes
3
answers
781
views
Generalization to AllTrue, AnyTrue and NoneTrue
I am wondering if there is a natural Mathematica way to generalize those functions. To be specific, All three functions AllTrue, ...
- 2,305
6
votes
6
answers
775
views
How do I replace elements in a list matching a pattern?
I have a list: {0, 1, 1, 1, 2, 2, 2, 6}.
I want to replace all the elements that are greater than 1 with the integer 1. In other words, I want Mma to return the list {0,1,1,1,1,1,1,1,1}.
- 877
1
vote
2
answers
161
views
List manipulation - End loop
Given are two matrices (a & b). I want to end the For-loop if all values in the matrix (a minus b) are smaller than 7, in contrast to any value in the matrix (a minus b) is smaller than 7. Can ...
- 11
2
votes
2
answers
189
views
How to use Contains functions on matrices?
I need a quick test to check if a large matrix contains any non-zeros. The Contains functions work on Lists not matrices.
...
- 4,642
2
votes
1
answer
102
views
Type declaration for list arguments
How can I make
f[n_Integer]=2*n
valid for a list of integers? For example:
f[nlist_Integer] := 2*nlist[[1]]
does not work ...
- 14.5k