You are viewing an old version of this page. View the current version.

Compare with Current View Page History

Version 1 Next »


Note

  • x and y represent real values or variables.
  • c and d represent complex values or variables.
  • m and n represent integer values or variables.
  • U represents a matrix of values. 
  • A matrix can be passed to a function that operates Element-wise on matrices, as its argument in the example as follows

X = [1, -2, 3; -4 5 -6; 7 -8 9];

Y = abs(X)
result:
Y = [1 2 3; 4 5 6; 7 8 9] 

Function
name
SyntaxFunction
abs

abs(x)

abs(c)

To return an absolute value of x or a complex modulus of c. This function operates Element-wise on matrices.
acos

acos(x)

acos(c)

To return an arc cosine of an angle in the range of 0.0 through pi. All angles are measured in radians.This function operates Element-wise on matrices. 
acosd

acosd(x)

acosd(c)

To return an inverse cosine of a given value expressed in degrees. This function operates Element-wise on matrices.
acosh

acosh(x)

acosh(c)

To return an inverse hyperbolic cosine of a given value. This function operates Element-wise on matrices.

acot

acot(x)

acot(c)

To return an inverse cotangent of a given value. This function operates Element-wise on matrices.
acotd

acotd(x)

acotd(c)

To return an inverse cotangent of a given value expressed in degrees. This function operates Element-wise on matrices.

acoth

acoth(x)

acoth(c)

To return an inverse hyperbolic cotangent of a given value. This function operates Element-wise on matrices.

acsc

acsc(x)

acsc(c)

To return an inverse cosecant of a given value. This function operates Element-wise on matrices.

acscd

acscd(x)

acscd(c)

To return an inverse cosecant of a given value expressed in degrees. This function operates Element-wise on matrices.

acsch

acsch(x)

acsch(c)

To return an inverse hyperbolic cosecant of a given value. This function operates Element-wise on matrices.

asec

asec(x)

asec(c)

To return an inverse secant of a given value. This function operates Element-wise on matrices.

asecd

asecd(x)

asecd(c)

To return an inverse secant of a given value expressed in degrees.This function operates Element-wise on matrices.

asech

asech(x)

asech(c)

To return an inverse hyperbolic secant of a given value. This function operates Element-wise on matrices.

asin

asin(x)

asin(c)

To return an arc sine of an angle in the range of -pi/2 through pi/2. This function operates Element-wise on matrices.

asind

asind(x)

asind(c)

To return an inverse sine of a given value expressed in degrees. This function operates Element-wise on matrices.

asinh

asinh(x)

asinh(c)

To return an inverse hyperbolic sine of a given value. This function operates Element-wise on matrices.

atan

atan(x)

atan(c)

To return an arc tangent of an angle in the range of -pi/2 through pi/2. This function operates Element-wise on matrices.

atan2

atan2(x,y)

atan2(U,V)

To return an arc tangent of an angle in the range of -pi through pi. atan2(U, V) returns a matrix of the same size as the U and V matrices containing the Element-by-Element, inverse tangent of the real parts of U and V.

atand

atand(x)

atand(c)

To return an inverse tangent of a given value, expressed in degrees. This function operates Element-wise on matrices.

atanh

atanh(x)

atanh(c)

To return an inverse hyperbolic tangent of a given value. This function operates Element-wise on matrices.

ceilceil(x)

To return a smallest (closest to negative infinity) value that is not less than the value of x and is equal to a mathematical integer. This function operates Element-wise on matrices.

conjconj(c)

To return a conjugated value of c. This function operates Element-wise on matrices.

cos

cos(x)

cos(c)

To return a trigonometric cosine of an angle. This function operates Element-wise on matrices.

cosd

cosd(x)

cosd(c)

To return a cosine of a given value expressed in degrees. This function operates Element-wise on matrices.

cosh

cosh(x)

cosh(c)

To return a hyperbolic cosine of a given value. This function operates Element-wise on matrices.

cot

cot(x)

cot(c)

To return a cotangent of a given value. This function operates Element-wise on matrices.

cotd

cotd(x)

cotd(c)

To return a cotangent of a given value expressed in degrees. This function operates Element-wise on matrices.

coth

coth(x)

coth(c)

To return a hyperbolic cotangent of a given value. This function operates Element-wise on matrices.

countcount(U)To return a number of Elements of a given matrix.
csc

csc(x)

csc(c)

To return a cosecant of a given value. This function operates Element-wise on matrices.

cscd

cscd(x)

cscd(c)

To return a cosecant of a given value expressed in degree. This function operates Element-wise on matrices.

csch

csch(x)

csch(c)

To return a hyperbolic cosecant of a given value. This function operates Element-wise on matrices.

diag

diag(U)

diag(U,m)

To return a diagonal matrix and diagonals of the matrix. If U is a row matrix or a column matrix of n Elements, this function will return a square matrix of order n+abs(m), with the Elements of U on the kth
diagonal. k = 0 represents the main
diagonal. k > 0 is above the main
diagonal. k < 0 is below the main
diagonal. If U is a square matrix, this function will return a column matrix formed by the Elements of the kth diagonal of U.

exp

exp(x)

exp(c)

To return a Euler's number e raised to the power of a or c. This function operates Element-wise on matrices.

eyeeye(m)To return an identity matrix of dimension m x m.
factorialfactorial(m)To return a factorial of m value.
floor

floor(x)

floor(c)

To return a largest (closest to positive infinity) value that is not greater than the value of x and is equal to a mathematical integer. This function
operates Element-wise on matrices.

IEEEremainderIEEEremainder(x,y)To compute the remainder operation in two arguments as prescribed by the IEEE 754 standard.
ifif(b,x,y)To return the value of x if b is true. Otherwise, y is returned. Where b is a boolean value.
imagimag(c)

To return a real value of an imaginary part of a given complex number. This function operates Element-wise on matrices.

invertinvert(U)

To return an inverse or pseudo inverse of a given matrix. If the given matrix is a square matrix, the inverse of a U matrix will be returned using the LU factorization. If the given matrix is not a square matrix, a pseudo inverse matrix will be returned using the QR factorization.

linsolvelinsolve(U,V)X = linsolve(U,V) solves the linear system
U*X = V using the LU factorization with partial pivoting when U is a square matrix.
In

ln(x)

ln(c)

To return a natural logarithm (base e) of a given value. This function operates Element-wise on matrices.

log

log(x)

log(c)

To return a natural logarithm (base e) of a given value. This function operates Element-wise on matrices.

log10

log10(x)

log10(c)

To return a logarithm base 10 of a given value. This function operates Element-wise on matrices.

log2

log2(x)

log2(c)

To return a logarithm base 2 of a given value. This function operates Element-wise on matrices.

max

max(x,y,...)

max(c,d,...)

max(U)

max(U,V)

To return a greater of the given values. max(U) returns the largest Element of a given matrix. max(U, V) returns a matrix the same size as U and V with the largest Elements taken from U or V. The dimensions of U and V must be the same.

meanmean(U)

To return a mean or average value of a given matrix. U is a row or a column matrix: mean(U) returns the mean value of all Elements in the given matrix.U is a 2-D matrix: mean(U) returns a row matrix that contains the mean value of each column of the given matrix.

medianmedian(U)

To return a median value of a given matrix. U is a row or column matrix: median(U)
returns the median value of all Elements in the given matrix. U is a 2-D matrix: median(U) returns a row matrix that contains the median value of each column of the given matrix.

min

min(x,y,...)

min(c,d,...)

min(U)

min(U,V)

To return a smaller of the given values. min(U) returns the smallest Element of a given matrix. min(U, V) returns a matrix the same size as U and V with the smallest Elements taken from U or V. The dimensions of U and V must be the same.

num2str

num2str(x)

num2str(c)

To return a string specifying a given number x.
onesones(m,n)To return an m x n matrix of all 1s.
pow

pow(x, y)
pow(U, c)
pow(c, d)

To return a value of the first argument raised to the power of the second argument. This function operates Element-wise on a given matrix U.

randomrandom()To return a real value with a positive sign, greater than or equal to 0.0 but less than 1.0.
realreal(c)

To return a real value of the real part of a given complex number. This function operates Element-wise on matrices.

rintrint(x)

To return a value that is closest in value to an argument and is equal to a mathematical integer. This function operates Element-wise on matrices.

roundround(x)

To return a closest value to an argument and is equal to a mathematical integer. This function operates Element-wise on matrices.

sec

sec(x)
sec(c)

To return a secant of a given value.This function operates Element-wise on matrices.

secd

secd(x)
secd(c)

To return a secant of a given value expressed in degree. This function operates Element-wise on matrices.

sech

sech(x)
sech(c)

To return a hyperbolic secant of a given value. This function operates Element-wise on matrices.

sin

sin(x)
sin(c)

To return a trigonometric sine of an angle. This function operates Element-wise on matrices.

sind

sind(x)

sind(c)

To return a sine of a given value, expressed in degree This function operates Element-wise on matrices.

sinh

sinh(x)
sinh(c)

To return a hyperbolic sine of a given value. This function operates Element-wise on matrices.

size

size(U)
size(U, m)

To return a size of a given matrix. If only the matrix is passed to the function as an argument, the returned value is a 1x2 matrix. The first Element
is the number of rows and the second Element is the number of columns.If the second parameter (m) is specified, this function will return the size of an mth dimension of a given matrix as a scalar value. The second argument can be 1 or 2 (1 for the row size and 2 for the column size). For example:
U = [1, 2, 3; 4, 5, 6];
size(U) is [2, 3]
size(U, 1) is 2
size(U, 2) is 3

sort

sort(U)
sort(U, ‘descend’)

To sort the Elements of a given matrix in an ascending or descending order. If the second argument is specified with ‘ascend’ or ‘descend’, the Elements will be in an ascending or descending order respectively. If this function is called without a second argument, the Elements will be sorted in an ascending order.
U is a row or column matrix:
sort(U) and sort(U, ascend) sort all Elements in the given matrix.
U is a 2-D matrix: std(U) and std(U,flag) sort Elements in each column of the given matrix.

ssqrt

sqrt(x)
sqrt(c)

To return a correctly rounded positive square root of a double value.This function operates Element-wise on matrices.

std

std(U)
std(U, flag)

To return a standard deviation of a given matrix. The ’flag’ argument can be 0 or 1. It specifies the method for calculating the standard deviation.
If the flag = 0, the standard deviation is normalized by N-1. If the flag = 1, the standard deviation is normalized by N where N is the number of data.
The value of the flag will be zero by default. U is a row or column matrix:
std(U) and std(U, flag) returns the standard deviation of all Elements in the given matrix. U is 2-D matrix: std(U) and std(U,flag) returns a row matrix that contains the standard deviation of each column of the given matrix.

str2numstr2num(s)To return a number specified by a given string s.
sumsum(U)To return a summation of all Elements in a U matrix.
tan

tan(x)
tan(c)

To return a trigonometric tangent of an angle. This function operates Element-wise on matrices.

tand

tand(x)
tand(c)

To return a tangent of a given value expressed in degree.This function operates Element-wise on matrices.

tanh

tanh(x)
tanh(c)

To return a hyperbolic tangent of a given value. This function operates Element-wise on matrices.

toDegrees

toDegrees(x)
toDegrees(c)

To convert an angle measured in radians to an approximately equivalent angle measured in degrees.This function operates Element-wise on matrices.

toRadians 

To convert an angle measured in degrees to an approximately equivalent angle measured in radians. This function operates Element-wise on matrices.

transposetranspose(U)To return a transposition of a given matrix
zeroszeros(m, n)To return an m x n matrix of all 0s.