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cleaned up code, added struct docs

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cleaned up code, added struct docs
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Srinivas Gorur-Shandilya 2014-10-27 16:52:14 -04:00
parent 67de7d7281
commit 759f7349d2
1 changed files with 33 additions and 16 deletions
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matlab.html.markdown
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@ -40,36 +40,40 @@ ctrl-c % Abort current computation
edit('myfunction.m') % Open function/script in editor edit('myfunction.m') % Open function/script in editor
type('myfunction.m') % Print the source of function/script to Command Window type('myfunction.m') % Print the source of function/script to Command Window
profile viewer % Open profiler profile on % turns on the code profiler
profile of % turns off the code profiler
profile viewer % Open profiler
help command % Displays documentation for command in Command Window help command % Displays documentation for command in Command Window
doc command % Displays documentation for command in Help Window doc command % Displays documentation for command in Help Window
lookfor command % Searches for a given command lookfor command % Searches for a command in all other commands
% Output formatting % Output formatting
format short % 4 decimals in a floating number format short % 4 decimals in a floating number
format long % 15 decimals format long % 15 decimals
format bank % only two digits after decimal point - for financial calculations format bank % only two digits after decimal point - for financial calculations
fprintf fprintf('text') % print "text" to the screen
disp('text') % print "text" to the screen
% Variables & Expressions % Variables & Expressions
myVariable = 4 % Notice Workspace pane shows newly created variable myVariable = 4 % Notice Workspace pane shows newly created variable
myVariable = 4; % Semi colon suppresses output to the Command Window myVariable = 4; % Semi colon suppresses output to the Command Window
4 + 6 % ans = 10 4 + 6 % ans = 10
8 * myVariable % ans = 32 8 * myVariable % ans = 32
2 ^ 3 % ans = 8 2 ^ 3 % ans = 8
a = 2; b = 3; a = 2; b = 3;
c = exp(a)*sin(pi/2) % c = 7.3891 c = exp(a)*sin(pi/2) % c = 7.3891
% Calling functions can be done in either of two ways: % Calling functions can be done in either of two ways:
% Standard function syntax: % Standard function syntax:
load('myFile.mat', 'y') load('myFile.mat', 'y') % arguments within parantheses, spererated by commas
% Command syntax: % Command syntax:
load myFile.mat y % no parentheses, and spaces instead of commas load myFile.mat y % no parentheses, and spaces instead of commas
% Note the lack of quote marks in command form: inputs are always passed as % Note the lack of quote marks in command form: inputs are always passed as
% literal text - cannot pass variable values. Also, can't receive output: % literal text - cannot pass variable values. Also, can't receive output:
[V,D] = eig(A) % this has no equivalent in command form [V,D] = eig(A); % this has no equivalent in command form
[~,D] = eig(A); % if you only want D and not V
@ -100,6 +104,10 @@ a = {'one', 'two', 'three'}
a(1) % ans = 'one' - returns a cell a(1) % ans = 'one' - returns a cell
char(a(1)) % ans = one - returns a string char(a(1)) % ans = one - returns a string
% Structures
A.b = {'one','two'};
A.c = [1 2];
A.d.e = false;
% Vectors % Vectors
x = [4 32 53 7 1] x = [4 32 53 7 1]
@ -160,6 +168,10 @@ A(1,:) % All columns in row 1
% 4 5 42 % 4 5 42
% 7 8 9 % 7 8 9
% this is the same as
vertcat(A,A);
[A , A] % Concatenation of matrices (horizontally) [A , A] % Concatenation of matrices (horizontally)
%ans = %ans =
@ -168,6 +180,8 @@ A(1,:) % All columns in row 1
% 4 5 42 4 5 42 % 4 5 42 4 5 42
% 7 8 9 7 8 9 % 7 8 9 7 8 9
% this is the same as
horzcat(A,A);
A(:, [3 1 2]) % Rearrange the columns of original matrix A(:, [3 1 2]) % Rearrange the columns of original matrix
@ -180,10 +194,13 @@ A(:, [3 1 2]) % Rearrange the columns of original matrix
size(A) % ans = 3 3 size(A) % ans = 3 3
A(1, :) =[] % Delete the first row of the matrix A(1, :) =[] % Delete the first row of the matrix
A(:, 1) =[] % Delete the first column of the matrix
transpose(A) % Transpose the matrix, which is the same as:
A'
ctranspose(A) % Hermitian transpose the matrix ctranspose(A) % Hermitian transpose the matrix
% (the transpose, followed by taking complex conjugate of each element) % (the transpose, followed by taking complex conjugate of each element)
transpose(A) % Transpose the matrix, without taking complex conjugate