The pure-function tag has no wiki summary.
11
votes
2answers
243 views
Using several anonymous functions mixed together
This works:
list // BarChart[#[[2]], ChartLabels -> DateString @@@ #[[1]], ChartStyle -> "Pastel"] &
This doesn't:
...
9
votes
2answers
92 views
What are Root objects with multiple polynomials?
In Mathematica 9 a new flavor of Root object with multiple polynomials was introduced. For example,
...
5
votes
2answers
166 views
Second level depth pure function?
I have the following working construction:
Select[ln125, # == Nearest[ln125, 551.748][[1]] &]
Here, ln125 is a one ...
5
votes
1answer
106 views
nested use of Apply/Map/MapThread in pure functions
1. My main question
I have a function with two argument slots. I wan't to apply this function to 2 lists with different length's. I thought in this solution:
...
5
votes
3answers
131 views
Multiply list of pure functions by list of scalars?
I am trying to write a function that returns a list of pure functions. The last step in the function, is to multiply the list of pure functions by a list of scalars (i.e. matrix multiplication). When ...
3
votes
2answers
56 views
Generating a list of pure variables
I want to pass a list of pure variables to a function, in which the ordering of the variables matters. For instance, if I want a palindrome, my function might be:
...
2
votes
2answers
90 views
Using DeleteCases and Map together
Given:
list1 = {{"a",1},{"b",2},{"c",3}}
I would like to delete any pair in list1 that does not have a first element that belongs to list2.
Example 1: If ...
1
vote
2answers
54 views
How to construct a new list made from a function that operates on two lists
I need to take two lists (each list contains the number of moles of a chemical). I have a function calledFraction that takes the each entry of the list and then calculates the mole fraction of ...
1
vote
0answers
39 views
Confusing efficiency and evaluation when returning pure functions? [duplicate]
I have a function that takes some time to evaluate, that's meant to be a polynomial approximation to a function. The polynomial is defined by a list of coefficients, so I have the function ...
1
vote
0answers
40 views
Definition of differential operators [duplicate]
I am curious how differential operators are defined in Mathematica. More specifically, if the Laplacian function wasn't available, how would one go on to define such a function in Mathematica directly ...
0
votes
2answers
167 views
Expansion in Basis Functions
I am trying to create an expansion of the form
f[x,y]->Sum[Cn[x] y^n,{n,1,order}]
To replace the function f by the ...
