- Gnu octave matrix operations install#
- Gnu octave matrix operations code#
- Gnu octave matrix operations free#
- Gnu octave matrix operations windows#
Octave's "look and feel" is similar to MATLAB. If you are using Octave Version 4.0.0 but you do not want to use the GUI, add the -no-gui option: %> octave -no-guiįor comprehensive instructions on using Octave, see the GNU Octave documentation. To access a quick help guide: %> octave -help To check the version you are using: %> octave -version To see a list of versions available on NAS systems, run: %> module avail octave All of the previous versions run only with a command-line interface. The latest version of Octave, Version 4.0.0, includes a graphical user interface (GUI). If you rely on any of the MATLAB toolboxes, you may not want to switch to Octave (or, you can make an appropriate modification).įor detailed information about Octave, see the GNU Octave home page.įor a comparison of the two programs, see Differences Between Octave and MATLAB on the GNU Octave wiki page. However, Octave toolboxes are different from MATLAB toolboxes. Also, because the Octave language is similar to MATLAB, most MATLAB programs should be able to run on Octave. Its basic numerical functions are very similar to MATLAB, in terms of appearance and usage.
GNU Octave is an open-source program that you can use as an alternative to MATLAB. > subplot(1,2,1) plot(t,y1) % Divides plot into 1x2 grid > print -dpng 'myPlot.png' % Saves plot to PNG > ylabel('value') % - Add labels, legend and title > plot(t,y2,'r') % Add to graph with cos plot in red > hold on % Says to wait with plot instead of overwriting > % DRAW SIN AND COS CURVE ON SAME GRAPH: > plot(t,y1) % Show nice sin curve in default blue. > sum(sum(A)) % Sums all elements in A and would return (27). > sum(a) % Adds all elements in a and returns (17.5). % Where: c = col, r = row of any value >= 7. > r,c = find(A>=7) % Finds the row, column index of all values >= 7. > A = magic(3) % 3x3 matrix where all cols up to same value. % WARNING: if matrix does max for each column. > val = max % Returns (3) max value in v. > exp(v) % " " " " " " base e exponentiaion * B % element-wise multiplication (must be same dimensions) > A * C % matrix multiplication (results is 3x2 matrix) > v = % NOTE: commas behave same as semicolons
Gnu octave matrix operations code#
you can write code in files ending with ".m" (example: myFunction.m) and call those files / functions so long as you are in that directory." cd ls pwd" - these common unix commands work as you'd expect.
Gnu octave matrix operations install#
If you install Octave you can copy and paste these commands to see the full output from each line. Often I'll explain output in the % comments, but generally I have saved space by not showing any output lines. Here I go through some commands - roughly in the order I saw them in the online machine learning course.
Gnu octave matrix operations windows#
It works on all platforms, although on windows you will need to install it with Cygwin. Octave is an excellent language to prototype machine learning. Most of them I actually saw in an excellent online machine learning course which is referenced and acknowledged properly below, and was my reason for learning Octave. This page is my own "cheat sheet" where I list out most of the commands I'll need.
Gnu octave matrix operations free#
The language is very similar to and *mostly* comaptible with MATLAB - but unlike Matlab is free and open source under a GNU General Public License. It provides its own command line interface for solving linear and nonlinear problems and plotting graphs. GNU Octave is a high-level programming language, primarily intended for numerical computations, and very useful for matrix operations.