octave:octave
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octave:octave [2008/06/25 10:05] – deva | octave:octave [2009/03/29 13:52] – deva | ||
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=====Octave syntax and library overview===== | =====Octave syntax and library overview===== | ||
+ | ====plotting==== | ||
+ | <code matlab> | ||
+ | h = [1, | ||
+ | plot(h); | ||
+ | xlabel(" | ||
+ | print(" | ||
+ | </ | ||
+ | This code plots a a vector with a label on the x-axis, and exports it to a pdf file. | ||
+ | |||
+ | ====function==== | ||
+ | <code matlab> | ||
+ | function retval = myfunction(param1, | ||
+ | retval = param1 + param2; | ||
+ | end; | ||
+ | </ | ||
+ | |||
+ | ====strings==== | ||
+ | <code matlab> | ||
+ | mystring = 'hello world'; | ||
+ | sizeof(mystring) % get length of string | ||
+ | |||
+ | mystrilyng2 = [ mystring, ' | ||
+ | |||
+ | </ | ||
+ | sizeof on works in octave. in matlab the length of a string cannot be obtained! | ||
+ | |||
+ | ====string array==== | ||
+ | <code matlab> | ||
+ | myemptyarray = {}; % create empty string array. | ||
+ | |||
+ | myarray = { ' | ||
+ | myarray(1) % prints ' | ||
+ | myarray(3) = ' | ||
+ | |||
+ | sizeof(myarray) % get number of elements | ||
+ | sizeof(myarray(1)) %get length of first string | ||
+ | |||
+ | % Iterate strings in string array | ||
+ | for str = myarray | ||
+ | disp(str) | ||
+ | end | ||
+ | |||
+ | </ | ||
+ | Note: Arrays are 1-based, not 0-based as they usually are in real programming languages. | ||
+ | Note: sizeof is an octave-only function. size can be used to get the array size in matlab. | ||
+ | |||
====if then else==== | ====if then else==== | ||
<code matlab> | <code matlab> | ||
Line 29: | Line 75: | ||
end; | end; | ||
</ | </ | ||
+ | |||
+ | ====switch case==== | ||
+ | <code matlab> | ||
+ | yesno = " | ||
+ | |||
+ | switch yesno | ||
+ | case {" | ||
+ | value = 1; | ||
+ | case {" | ||
+ | value = 0; | ||
+ | case " | ||
+ | value = 42; | ||
+ | otherwise | ||
+ | error (" | ||
+ | endswitch | ||
+ | </ | ||
+ | Note: In matlab the '' | ||
====Links==== | ====Links==== |
octave/octave.txt · Last modified: 2009/04/23 13:54 by deva