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plot(x,y,z)

  • Will plot X versus Y. If Y is omitted, the function will plot X versus size(X).
  • Z parameter will change the format of the plot. It is a character string. For example, Z = 'b*' will plot using blue stars. For all possible options, check the help page for plot

semilogx(x,y,z)

  • Creates plot with logarithmic scale for x

semilogy(x,y,z)

  • Creates plot with logarithmic scale for y

loglog(x,y,z)

  • Creates plot with logarithmic scales for both x and y

plot(x1,y1,z1,x2,y2,z2...xn,yn,zn)

  • Will plot multiple curves on one graph where X, Y and Z each correspond to one individual curve.

subplot(y,x,z)

  • Will allow you to plot many graphs at once. X and Y are the number of graphs in each row and column, respectively. Z is the current graph that the plot() command will affect.
  • To change which plot to modify, you must reuse the subplot command with the same X and Y, and change the Z value to the plot you wish to modify

xlabel('label'),ylabel('label')

  • Changes the label for the x and y axis on the current graph.

title('label')

  • Changes the title of the current graph.

grid on/ grid off/ grid minor

  • Turns a grid on or off. grid minor adds more lines to the plot.

Alumni Liaison

Abstract algebra continues the conceptual developments of linear algebra, on an even grander scale.

Dr. Paul Garrett