The Plot Function:
We will begin with a very simple graph of one point using the plot function. The script, plotonepoint, below plots only one point. To do this, at first the values are given for the x and y coordinates of the point in individual variables. The point is then plotted using a red*. The plot is then customized by identifying the minimum and maximum values on first the x-axis and then y-axis. The Labels are then place on x-axis, y-axis, and the graph itself by using the function xlabel, ylabel, and the title. All this can be completed from the Command Window, but it is much simpler to use a script. The below shows the contents of the script plotonepoint which accomplishes this. The x-coordinate shows the time of day (example 11am) and the y coordinate shows the temperature in degrees Fahrenheit at that time:
In the call to the axis function, one of the vectors is passed. The first two values are the minimum & maximum for x-axis, and the last two are the minimum & maximum for the y-axis. Executing this script carry a Figure that is window with the plot.