Desktop Basics
When you start MATLAB®, the desktop appears in its default layout.
The desktop includes these panels:
Current Folder— Access your files.
Command Window— Enter commands at the command line, indicated by the prompt (
>>
).Workspace— Explore data that you create or import from files.
当你在MATLAB工作,你命令cre问题ate variables and call functions. For example, create a variable nameda
by typing this statement at the command line:
a = 1
MATLAB adds variablea
to the workspace and displays the result in the Command Window.
a = 1
Create a few more variables.
b = 2
b = 2
c = a + b
c = 3
d = cos(a)
d = 0.5403
When you do not specify an output variable, MATLAB uses the variableans
, short foranswer, to store the results of your calculation.
sin(a)
ans = 0.8415
If you end a statement with a semicolon, MATLAB performs the computation, but suppresses the display of output in the Command Window.
e = a*b;
You can recall previous commands by pressing the up- and down-arrow keys, ↑ and ↓. Press the arrow keys either at an empty command line or after you type the first few characters of a command. For example, to recall the commandb = 2
, typeb
, and then press the up-arrow key.