![]() ![]() text, "string", sprintf ( "A = %.3f", A )) set ( hsrc, "userdata", h ) endfunction function up_fig (hsrc, evt ) h = get ( gcbf, "userdata" ) delete ( h. line, "ydata", tmp ( 2, :)) endif # calculate the area A = polyarea ( h. text = text ( NA, NA, "", "horizontalalignment", "center" ) # testing axis () else set ( h. points (:, idx ) = c endif # draw / update the line tmp = # duplicate first point to close triangle if ( isempty ( h. marker, "ydata", c ( 2 )) # find nearest point d = h. marker )) c = get ( gca, "currentpoint" )() set ( h. marker = plot ( NA, NA, "o", "markersize", 15, "color", "green" ) hold off endif set ( hsrc, "userdata", h ) drag_fig ( hsrc, evt ) endfunction function drag_fig (hsrc, evt ) # evt 1:left button, 2:middle button, 3:right button h = get ( hsrc, "userdata" ) if ( ! isempty ( h. marker = set ( gcf, "userdata", h ) function down_fig (hsrc, evt ) h = get ( hsrc, "userdata" ) if ( isempty ( h. ![]() points = rand ( 2, 3 ) # 3 random points h. See also uicontrols where you can create buttons and slider to create plots. %examples and ‘ko’ for the negative examples.Clear all graphics_toolkit qt set ( 0, "defaultlinelinewidth", 2 ) h. This page shows some possibilities to create interactive OpenGL plots (qt or fltk toolkit) not using uicontrols. A quiver object regroups the components of the quiver plot (body, arrow, and marker), and allows them to be changed together. The optional return value h is a graphics handle to a quiver object. % 2D plot, using the option ‘k+’ for the positive If the first argument hax is an axes handle, then plot into this axis, rather than the current axes returned by gca. %Plot the positive and negative examples on a I have a doubt, regarding the syntax, as i am facing an error (Octave 6.1.0 on Ubuntu) However, when I “Save-as” the result as a ‘png’, the image always contains residual evidence of the lines.Īlso, if I may, is there a way to lock the aspect ratio of resulting plots? Despite the fact that my x,y values are symmetric, the plots are always over a rectangular grid, instead of square. (I understand that the ‘interp’ shading interpolates missing values). ![]() Visible lines between the values of the mesh. (because I really only want intensities) and both do result in plots which visually do not show Surface(x,y,z,’edgecolor’,’none’), shading(‘interp’), colormap(gray) Surface(x,y,z,’linestyle’,’none’), shading(‘interp’), colormap(gray) I would like to eliminate the gridlines on the plot and see–and save–just color information.įrom advice elsewhere, I tried separately: Pingback: Octavian Statistics | Playing with Systems Pingback: Polynomial Curve Fitting & Interpolation | Playing with Systems This twelfth article of the mathematical journey through open source, shows the mathematical visualization in octave.ġ0 thoughts on “ Figures, Graphs, and Plots in Octave” ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. Archives
December 2022
Categories |