Need Help: Matlab Function Plotting

Question

Why won't my matlab function plot? Whenever I enter in a variable I no lines come up in my matlab figure.

Here's the code:

---

%we have decided to emulate an auditory sensor

function GroupSensorFun1(N) %user chooses # of variables

    %creating sensor data for time and decibles

    timeVec = 1:1:N; %vector emulates N seconds

    soundVec = 1000/rand(N,1) %randomly generates N readings

    hold on

    for i = 1:N %loop N times to plot all data

        %plot data on to scatter graph one varible at a time.

        %scatter(timeVec(i),soundVec(i))

        plot(timeVec(i),soundVec(i))

    end

    % Create xlabel

    xlabel({'Time in Seconds'});

    % Create ylabel

    ylabel({'Decibles scaled'});

    % Create title

    title({'Auditory Sensor Data in ', num2str(N) ' Seconds'});

    hold off

Answer 1

Try this:

%we have decided to emulate an auditory sensor

function GroupSensorFun1(N) %user chooses # of variables

    %creating sensor data for time and decibles

    timeVec = 1:1:N; %vector emulates N seconds

    soundVec = 1000/rand(N,1) %randomly generates N readings

    %scatter(timeVec,soundVec)

    plot(timeVec,soundVec,'o')

    % Create xlabel

    xlabel('Time in Seconds');

    % Create ylabel

    ylabel('Decibles scaled');

    % Create title

    title(['Auditory Sensor Data in '  num2str(N) ' Seconds']);

You don't need a for to make a scatter plot, just plot without lines and a symbols ('o' in this case)