~~NOTOC~~
====== General Instructions for Creating Graphs and Figures ======

Examples below can be generated by ''plot_example.m'' script in [[http://cw.felk.cvut.cz/courses/GVG/2013/Tools|Tools repository]].

  * Use ''subfig'' to place your figures reasonably. Note that a new figure is created each time, so don't forget to close your figures. Preferably ''close all'' at the beginning of your script.
  * Each figure should a have descriptive title.
  * When necessary, a legend describing lines of different colors/styles should be added, preferably inside the plot, if possible.

==== Figures with Bitmap Image Superimposed ====

  * Do not use ''imshow'' Matlab command for displaying bitmaps. Use ''image'' (or ''imagesc'' for grayscale bitmaps), then axes are kept shown.
  * Ensure square pixels: ''axis image'' (this hides area outside the image) or ''axis equal''.

|  {{courses:gvg:labs:ex_img.png|Example image}}  |

==== 2D and 3D Euclidean Plots ====

  * Ensure equal axis scale: ''axis equal''
  * Use labels for axes, e.g. ''xlabel( 'x' )'', ''zlabel( 'z' )''

|  {{courses:gvg:labs:ex_3d.png|Example 3D Plot}}  |

==== Plotting vectors ====
  * Use ''quiver'' and ''quiver3'' to plot bound vectors in 2D/3D. 
  * Use as ''quiver(X,Y,U,V,0)'' where X,Y is the origin and U,V the vector. The scaling argument 0 ensures the arrow is of the proper length.

|  {{courses:gvg:labs:random2CS.png|Example vector plot}}  |

==== Other Graphs ====

  * Use labels for axes, e.g. ''xlabel( 'time [s]' )'', ''ylabel( 'voltage [mV]' )''. Don't forget units.
  * Use ''axis tight'' to set axis limits tightly to data.

|  {{courses:gvg:labs:ex_graph.png|Example graph.}}  |