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1D Arrays (Ch.5,6,7)

Terms in this set (18)

Array
an ordered sequence of items of a given data type
Array Element
each item in an array
Numeric Array
Array with numbers
Homogenous Array
An array whose elements are all the same class types.
inhomogeneous array
An array whose elements may be of different class types
Row Array
a one-dimensional array consisting of 1 row having n columns, each column i containing a single numeric element xi.
Size of Array
Given by R*C, where R is the number of rows and C is the number of columns.
Column Operator
constructs a numeric row array by specifying a starting value, an increment value, and a terminating value, with those values separated by colons.

The array's first element is the starting value, second element is the starting value plus the increment value, and so on, until the terminating value is reached

A negative increment (or decrement) value used in the colon operator constructs an array with elements in descending order

(If the increment value is 1, the increment value can be omitted from the colon operator. Good practice is to omit the increment value in the colon operator if the increment is 1.)

(Starting value can't be greater than ending value when using increments)

Ex: myArray = [5:1:9] yields array [5, 6, 7, 8, 9].
Column Array
N elements are organized as 1 column of N rows. In a numeric column array, each row i contains a single numeric element xi:
Transpose of an Array
Turns rows into columns

colArray = transpose(rowArray)

A (') can also be used at the end of an array, outside brackets to transpose it.
Concatentate
Combining two arrays into one array by arrayNew = [array1, array2].
Linspace
creates a row array of linear spaced points, given a start value, stop value, and the number of desired points:
Logspace
creates a row array with numPoints points, logarithmically spaced from 10^powerStart to 10^powerStop:
Element Wise Operator
performs an operation on each corresponding pair of elements of two one-dimensional (1D) arrays, yielding a new array.

The two numerical arrays must have compatible sizes to allow an element-wise operation. Two numerical array inputs have compatible sizes if, for every dimension, the dimension sizes of the inputs are either the same, or one of the dimension sizes is 1
Dot operators
An element-wise multiplication operator exists and has the notation . (note the period before the symbol). Likewise, element-wise division (./) and element-wise exponentiation (.^) operators exist.
Logical Array
is an array whose elements are logical values (true or false).

One-dimensional (1D) logical arrays can be used as the index to another 1D array to simultaneously access multiple elements of that 1D array.
Indexing Array
The logical array is known as the indexing array, and the array being accessed as the indexed array.
Logical Indexing
Accessing an array's elements using a logical indexing array
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