Difference between revisions of "MatlabIntro"

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(Basics)
Line 6: Line 6:
  
 
<pre>
 
<pre>
>> x = [1 2 3 4 5]
+
>> x = 1
  
 
x =
 
x =
  
     1     2    3    4    5
+
     1
 
</pre>
 
</pre>
  
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<pre>
 
<pre>
>> x = [1 2 3 4 5];
+
>> x = 1;
 
>>
 
>>
 
</pre>
 
</pre>
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</code>
 
</code>
  
 +
 +
* Inside a vector/matrix definition, commas or spaces separate elements row-wise
 +
 +
<pre>
 +
>> x = [1 2 3 4 5]
 +
</pre>
 +
 +
is the same as:
 +
 +
<pre>
 +
>> x = [1,2,3,4,5]
 +
</pre>
 +
 +
and they both generate a row vector. Semi-colons, instead, separate elements column-wise:
 +
 +
<pre>
 +
>> x = [1;2;3;4;5]
 +
</pre>
  
 
== General tips ==
 
== General tips ==

Revision as of 10:47, 21 September 2010


Basics

  • Use semi-colon at the end of the line to prevent the output of the operation to be printed to the screen
>> x = 1

x =

     1

vs.

>> x = 1;
>>


Vector and Matrices

  • Use square brackets to define a vector/matrix

x = [1 2 3 4 5]


  • Inside a vector/matrix definition, commas or spaces separate elements row-wise
>> x = [1 2 3 4 5]

is the same as:

>> x = [1,2,3,4,5]

and they both generate a row vector. Semi-colons, instead, separate elements column-wise:

>> x = [1;2;3;4;5]

General tips

  1. Try to vectorize every operation if you can