Help defining a variable and bar chart?

There is a set of data with 5 columns and column 2 is bacteria1 column 3 is bacteria2. How would you make a variable holding the data from columns 2 and 3?

How would you make a bar chart corresponding to this?

Answer 1

[Star Strider]

Days = [1:30]';                 % Days
Bact1 = randi(33,30,1);         % Bacteria 1 Counts
Bact2 = randi(66,30,1);         % Bacteria 2 Counts
Data = [Days  Bact1  Bact2];    % Data set matrix
Bact = Data(:,2:3);             % Variable for Bact1, Bact2

figure(1)
bar(Bact)                       % Plot the bar chart

[Dustin]

What are all these "randi" numbers ?

[Star Strider]

The randi function generates random integers. I used it to create data to plot.

Answer 2

[Dustin]

What are all these "randi" numbers ?