Transformation Operator

The transformation operator (->) is very powerful and has many uses. It transforms an expression on the left using an expression on the right.

This operator creates a step value when used with a range. A range of 1..10 goes from 1 to 10 with a default step value of 1. A range of 1..10 -> 2 creates the same range with a step value of 2.

Examples


Substitution

x^2 -> 4
x^2+y^2 -> [x=2, y=4]

Unit Conversions

3@miles -> @kilometers
@cups -> @tablespoons
5@hours -> @minutes
30@C -> @F

Sublists with ranges

[1, 2, 3, 4, 5] -> 2..4
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10] -> (1..$ -> 2)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10] -> (2..$ -> 2)

Substrings with ranges

"Hello World" -> 1..5
"Hello World" -> 6..$
"ABCDEFGHIJ" -> (1..$ -> 2)

Split

"abcdefg" -> []
x+y+z -> []

Join

[a, b, c, d, e, f, g] -> ""
[x, y, z] -> +
[x, y, z] -> *
[x, y, z] -> ^

Transformations

x+y+z -> ^
a*b*c -> +

Appending Lists

[1, 2, 3] -> [4]
[1, 2] -> [3, 4, 5]
[1] -> [2, 3, 4]

Sum

[1, 2, 3, 4, 5, 6, 7] -> +

Product

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10] -> *

Deleting elements in a list using the index operator

[1, 2, 3, 4, 5] -> #2
[1, 2, 3, 4, 5] -> #2..4

Inserting elements into a list using the index operator

1 -> #1 -> [2, 3, 4, 5]
3 -> #2 -> [2, 5, 7, 11]

Evaluate a script

@cube(x) x^3
cube -> 3
@multiply(a, b, c) a*b*c
multiply -> [a, b, c]
multiply -> [2, 3, 4]
Using MathStudio
The Basics
1. Introduction
2. Trigonometric Functions
3. Special Values
4. Lists
5. Matrices
6. Algebra
7. Calculus
8. Fourier Analysis
9. Units
10. Base Conversions
11. Regression Analysis
12. Natural Language
13. Constants
14. Dynamic Variables
Operators
1. Basic Operators
2. Double Power Operator
3. Comparison Operators
4. Logical Operators
5. Compound Assignment Operators
6. Type Comparison Operators
7. Size Operator
8. Range Operator
9. Transformation Operator
10. Index Operator
11. Union Operator
12. Intersection Operator
13. Difference Operator
14. Double Modulo Operator
15. Matrix Operator
16. Matrix Size Operator
17. Angle Operator
18. Choose Operator
19. String Concatenation Operator
20. Conditional Operator
21. Append Operator
22. Element Operator
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10. Working with JSON
Functions
A
abs(z)
AiryAi(z)
AiryBi(z)
AlternatingSeries(n, [terms])
Angle(A, B)
Animate(variable, start, end, [step], [value], [fps])
Apart(f(x), x)
Append(expression1, expression2)
Arg(z)
B
BarPlot(list1, list2, ...)
Bernoulli(n, [z])
BesselI(v, z)
BesselJ(v, z)
BesselK(v, z)
BesselY(v, z)
Beta(m, n)
Binomial(n, r)
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BinomialPDF(n, p, x)
BodePlot(function, variable, minimum, maximum, mode)
BoxPlot(x, [y], [x2], [y2], ...)
Button(name, [list], [value])
C
Call(function, parameter1, parameter2, ...)
Caps(string, index, [mode])
Catalan(n)
Ceil(z)
cFrac(n, [terms])
Char(x)
ChebyshevT(n, z)
ChebyshevU(n, z)
CheckBox(variable, [value])
Chi(z)
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ChiSquarePDF(x, df)
Cholesky(A)
Choose(test1, value1, test2, value2, ...)
Ci(z)
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D
D(f(x), x, [n])
Date(letter)
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Degree(expression)
DEGtoDMS(angle, [digits])
Delete(expression, position, [length])
Denominator(expression)
Det(A)
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DiLog(z)
Dirichlet_Eta(z)
Dirichlet_Lambda(z)
Divergence([varlist], vector, [mode])
Divisors(n)
DivisorSigma(n)
Dot(A, B)
DSolve(equation, dependent(independent), values, mode=1)
Duf(function, [varlist], [point], [direction])
dynamic(name, value)
E
Ei(z)
Eigenvalues(A)
Eigenvectors(A)
Else If(condition)
Erf(z)
Erfc(z)
Error(string)
Euler(n, [z])
Eulerian(n, k)
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Exp(z)
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ExpConvert(expression)
ExpFit([x], y)
ExpFitModel([x], y)
ExpFitPlot([x], y)
ExponentialFit([x], y)
ExponentialFitModel([x], y)
ExponentialFitPlot([x], y)
Extract(expression, position, [length])
F
Factor(expression)
Factorial(n)
Fcdf(lower, upperbound, numerator, denominator)
fDiff(f(x,y,z,..), (x,y,z,...))
Fibonacci(n, [z])
Finance(PV, FV, Pmt, i, n, [mode=0])
FindFit(function, variable, [x], y)
FindFitModel(function, variable, [x], y)
FindFitPlot(function, variable, [x], y)
Flatten(matrix)
Floor(z)
FourierCos(f(x), x, w)
FourierExpSeries(f(x), x, n)
FourierSeries(f(x), x, [n], [mode])
FourierSin(f(x), x, w)
FourierTrigSeries(f(x), x, n)
fPart(z)
Fpdf(x, d1, d2)
FractalPlot(expression, ...)
FresnelCos(z)
FresnelSin(z)
FullRectSineWave(x, [T])
Function(function, parameter1, parameter2, ...)
G
Gamma(z)
GCD(n1, n2)
GegenbauerC(n, a, z)
GeoCDF(p, x)
GeoPDF(p, x)
Gradient(function, [varlist], [mode])
Gudermannian(z)
H
HalfRectSineWave(x, [T])
HankelH1(v, z)
HankelH2(v, z)
Harmonic(z)
Heaviside(x)
HermiteH(n, z)
Hessian(function, [varlist], [mode])
HRStoHMS(hours, [digits])
http(url, [filter])
Hypergeom_2F1(a, b, c, z, [mode])
I
Identity(n)
iDiff(f(x,y,z,..), dependant_variables, independant_variables)
If(condition)
iLaplace(F(s), s)
Im(z)
ImagePlot(data)
ImaginaryPart(expression)
ImplicitPlot(expression, ...)
Include(filename)
Insert(expression, item, position)
Integrate(f(x), x, [a], [b])
Inverse(A)
InverseNormal(p, [mu], [sigma])
invGudermannian(z)
iPart(z)
IsList(expression)
IsMatrix(expression)
IsNumber(expression)
IsPoly(expression, variable)
IsPrime(n)
J
Jacobian(function, [varlist], [point])
json(data, [filter])
JuliaPlot(expression, ...)
K
KelvinBei(v, z)
KelvinBer(v, z)
KelvinKei(v, z)
KelvinKer(v, z)
L
LaguerreL(n, z)
LambertW(z)
Laplace(f(t), t)
Laplacian(function, [varlist], [mode])
LCM(n1, n2)
Left(expression)
LegendreP(n, z)
LegendreQ(n, z)
Length(expression)
Li(x)
Limit(function, variable, point, [direction])
LinearFit([x], y)
LinearFitModel([x], y)
LinearFitPlot([x], y)
List(length)
ListMap(list, name, [value])
ListPlot(x, [y], [x2], [y2])
ListPlot3D(x, y, z, [x2], [y2], [z2], ...)
Ln(z)
LnFit([x], y)
LnFitModel([x], y)
LnFitPlot([x], y)
LnGamma(z)
local(name, value)
Log([n], z)
LogisticFit([x], y)
LogisticFitModel([x], y)
LogisticFitPlot([x], y)
Lucas(n, [z])
M
Matrix(rows, [columns])
MatrixLU(matrix, [mode])
MatrixMap(matrix, name, [value])
MatrixQR(A)
MatrixSVD(A)
Max(number, ...)
Mean(list)
MedianFit([x], y)
MedianFitModel([x], y)
MedianFitPlot([x], y)
Message(string)
Min(list)
Mod(m, n)
Multinomial(nList)
MultiPlot(plot1, plot2, ...)
MultiPlot3D(expression, ...)
N
nCr(n, r)
NIntegrate(f(x), x, a, b)
Norm(z)
NormalCDF(lower, upper, [mu], [sigma])
NormalPDF(x, mu, sigma)
nPr(n, r)
nPrimes(n)
nRoot(z, n, [mode])
P
ParametricPlot(expression, ...)
ParametricPlot3D(expression, ...)
Part(expression, n)
pDiff(f(x,y,z,..), dependent_variables, dependent_equations, independent_variables)
Pi_Digits(n)
Plot(expression, ...)
Plot3D(expression, ...)
Pochhammer(n, k)
PoissonCDF(mu, x)
PoissonPDF(mu, x)
PolarPlot(expression, ...)
PolyDivide(f(z), g(z))
PolyFit(pList, var)
PolyGamma(n, z)
PolyGCD(polynomial1, polynomial2)
PolyLCM(polynomial1, polynomial2, [mode=1])
PolyLog(n, z)
PowerExpand(expression)
PowerFit([x], y)
PowerFitModel([x], y)
PowerFitPlot([x], y)
Prime(n)
Primorial(n)
Product(f(n), n, start, end)
Psi(z)
Q
QuadraticFit([x], y)
QuadraticFitModel([x], y)
QuadraticFitPlot([x], y)
QuarticFit([x], y)
QuarticFitModel([x], y)
QuarticFitPlot([x], y)
Quotient(f(x), g(x))
R
Random(min, max, [size1], [size2])
Re(z)
RealPart(expression)
Remainder(f(x), g(x))
Replace(expression, old, new)
Reshape(matrix)
Return(expression)
Reverse(list)
Right(expression)
RK4(function, t, y, a, b, y0, N=10)
RK45(function, t, y, a, b, y0, Tol=10E-5, hmax=0.25, hmin=10E-6, N=20)
Round(number, digits)
RowReduce(A)
S
SawToothWave(x, [T])
Sequence(f(x), x, start, end, [step], [start term], [number of terms])
Series(f(z), z, n)
Shi(z)
Si(z)
Sign(z)
SimplifyFunction(expression)
SimplifyPoly(f(x)/g(x), [variable])
sin(z)
SinFit([x], y)
SinFitModel([x], y)
SinFitPlot([x], y)
Size(list)
Slider(variable, start, end, [step], [initial value])
Solve(f(x), x, [guess])
SolveSystem(equations, [variables], [guesses])
Sort(list)
SphericalPlot3D(expression, ...)
Sqrt(z)
SquareWave(x, [T])
StaircaseWave(x, [T])
StandardDeviation(list)
String(expression1, expression2, ...)
StudentTCDF(x, df)
StudentTPDF(x, df)
Sum(f(n), n, start, end)
SurfaceNormal(function, [varlist], [point])
T
Together(expression)
Trace(variable)
Transpose(A)
TriangleWave(x, [T])
TrigConvert(expression)
TrigExpand(expression)
TrigReduce(expression)
V
Variables(expression)
Variance(list)
VectorPlot(list, ...)
VectorPlot3D(list, ...)
W
While(condition)
Z
Zeta(z, [a])