KwCheng's blog

In this example , we want to tell you how to replace specific number of array.

Assume we have follow matrix , and we want replace 0 to -1 ;

In Matlab , there are two method to concatenate string .

It is different with the plot function , we can use axis() to adjust the x-axis ,

but it does not work in histogram.

so , Matlab has provided anothoer method as follow:

x = 0:1:4;

y = randn(10000,1);

hist(y,x) 

x = 0:1:4 ;

It means that the range of x-asis is from 0 to 4 , and the distance between each column is 1.

We can use the function , ezplot() , to achieve the purpose.

for example :

period character , 也就是 . 運算子 ,

他區隔兩個運算是矩陣運算或是單純的array運算 , 

在Matlab中有一些內建變數 , 像是:

eps

The standard form of quadratic programming is 1/2*x'*H*x + f'*x .

In Matlab , we can use the function , quadprog( H,f ) , to solve the quadratic programming problem.

fr = fopen('inputFile.txt','r');

for i=1:numOfpoint

 在Matlab中 , 一般的element我們可以使用array來進行儲存 , 

但是如果element是一個個的array , 我們則可以藉由cell array 

If we want to input data into array in Matlab , we can use the function as below:

input('message');

How to get the size of a Matrix

Assume L is a 2-dimensional Matrix ,

1. vector for polynomial

2. sym for polynomial

size()

  會傳回一個矩陣的row and column,若是圖片則會傳回3個值,