Refer the subset of a matrix:

It is also possible to refer to the subset of a matrix. For illustration, this refers to the first & second rows, second & third columns:

>> mat(1:2,2:3)

ans =

3 4

4 5

 

Using a colon for the row index means that all rows, regardless of how many, and using a colon for the column index means that all columns. For illustration, this refers to the whole first row:

>> mat(1,:)

ans =

2  3  4

and this refers to the whole second column:

>> mat(:, 2)

ans =

3

4

 

Posted Date: 10/18/2012 4:22:25 AM | Location : United States

Ask an Expert

Related Discussions:- Refer the subset of a matrix, Assignment Help, Ask Question on Refer the subset of a matrix, Get Answer, Expert's Help, Refer the subset of a matrix Discussions

Write discussion on Refer the subset of a matrix
Your posts are moderated

Write your message here..

Related Questions

Variance, The variance is generally defined in terms of the arithmetic me... The variance is generally defined in terms of the arithmetic mean as: At times, though, the denominator is defined as n instead of n - 1. The default definition used by t

Built in recursive function in matlab, Built in recursive function in MATLA... Built in recursive function in MATLAB: We have seen that the built-in function in MATLAB to compute factorials, termed as the factorial and we know how to implement the iterat

Types of user-defined functions, Types of User-defined Functions: We k... Types of User-defined Functions: We know how to write a user-defined function, stored in an M-file, which computes and returns one value. This is merely one type of the functi

Bar and barh functions - plot functions, bar and barh functions: For a... bar and barh functions: For a matrix, the bar and barh functions will group altogether the values in each and every row. The illustration is as shown: rm = randint(2,4,[1

Illustration of a recursive function, Illustration of a recursive function:... Illustration of a recursive function: illustration is of a recursive function which does not return anything, but simply prints. The below function prtwords receives a sentenc

Illustration of variance, Illustration of Variance For illustration, fo... Illustration of Variance For illustration, for the vector [4, 6, 1, 5], there are n = 4 values therefore n - 1 is 3. The mean of this data set is also 4. The variance will be

Indexed empty matrix, Indexed empty matrix: The Individual elements ca... Indexed empty matrix: The Individual elements cannot be eliminated from matrices, as matrices always have the similar number of elements in every row. >> mat = [7 9 8; 4 6

Polar form, Polar Form: Any complex number z = a + bi can be thought o... Polar Form: Any complex number z = a + bi can be thought of as a point (a,b) or vector in the complex plane in which the horizontal axis is the real part of z, and the vertica

Referring to and modifying the matrix elements, Referring to and Modifying ... Referring to and Modifying the Matrix Elements: To refer to matrix elements, the row and then the column indices are given in parentheses (always the row index initially and t

Function isreal - complex numbers, Function isreal - complex numbers: ... Function isreal - complex numbers: The function isreal returns 1 for logical true when there is no imaginary part of the argument, or 0 for false when the argument does have a