Sets the thickness of the lines on a graph.


plotSetLineThickness(&myPlot, thickness)
  • &myPlot (struct pointer) – A plotControl structure pointer.
  • thickness (1xN matrix) – line thickness settings.


// Declare plotControl structure
struct plotControl myPlot;

// Initialize plotControl structure
myPlot = plotGetDefaults("xy");

// Set all lines to have a thickness of 2
thickness = 2;
plotSetLineThickness(&myPlot, thickness);

// Create data
x = seqa(0.1, 1, 50);
y = sin(x)~cos(x);

// Plot the data with the new line thickness settings
plotXY(myPlot, x, y);


This function sets an attribute in a plotControl structure. It does not affect an existing graph, or a new graph drawn using the default settings that are accessible from the Tools > Preferences > Graphics menu. See the GAUSS Graphics chapter for more information on the methods available for customizing your graphs.