II.1 Programming in MATLAB Getting Started Graphing

%% tgraph.m%% This m-file is a template for creating graphs of functions. It contains many of the% commands that are commonly used in graphing.%% In this template, the graphs of the sine function and the cosine function are created% in one figure window.%% This template shows:%% - several ways of plotting% - how to create a grid in a figure window% - how to label axes% - how to create a title for a figure window% - how to create a legend when more than one plot is drawn in a figure window%clear% Optional Feature. This sets all values to zero.for i = 1:361:1% This is the beginning of a loop. The index i increases% from 1 to 361 in increments of 1 each time through the% loop. More compact ways of doing loops is shown in% the template called tarray.%for i = 1:361 % The default increment is 1.theta(i) = (i-1)*2*pi/360; % theta is an array. theta varies from 0 to 2*pi radians.f(i) = sin(theta(i));% f is an array. The i-th entry of f is the sine function% evaluated at the i-th value of theta.p(i) = cos(theta(i));% p is an array. The i-th entry of p is the cosine% function evaluated at the i-th value of theta.end% This is the end of the loop.figuregrid onaxis([0 7 -1 1])hold%plot(theta,f)%plot(f)plot(theta,f,'r')plot(theta,p,'g')%plot(theta,p,'--')%plot(theta,p,':')%plot(theta,p,'r.')title('force and position')xlabel('t-axis')ylabel('force or positon')legend('force','position')% This opens a new figure window.% Optional Feature. This creates a grid on your graph.% Optional Feature. This specifies the axis limits% ([theta-min theta-max f-min f-max]).% Optional Feature. This holds the figure window for more% graphs.% This plots the array f versus theta (in radians).% This plots the array f versus the index (from 1 to% 361).% This plots the array f versus theta in red. The 'r'% indicates the color red.% This plots the array p versus theta in green. The 'g'% indicates the color green.% This plots the array p versus theta in large dashes.% This plots the array p versus theta in small dashes.% This plots the array p versus theta in red in small% red dots (zoom in to see them).% Optional Feature. This creates a title for the figure% window.% Optional Feature. This creates a label for the% horizontal axis.% Optional Feature. This creates a label for the vertical% axis.% Optional Feature. This creates a legend for the first% and second graphs in the figure window.Table 1: Template for Graphing3