title: Plot with a grid
body: <p>I am looking for a type of plot that is essentially a grid. For example, there will be 10 columns and 50 rows. For example, something like this:</p>
  
  <p><img src="https://i.stack.imgur.com/JkWNS.jpg" alt="enter image description here"></p>
  
  <p>Each of the boxes (in this case, 10*50 = 500) will have a unique value that I will be providing via a data frame. Based on the unique values, I'll have a function that will assign a colour to each box. So then it becomes a grid to visualize "the range" of each box. I'd also need to label each of the columns (probably vertically so all labels fit) and rows (horizontally).</p>
  
  <p>I just don't know what kind of plot that will be and I don't know if any libraries do this. I'm just looking for some help in finding something that does this. I'd appreciate some help if possible.</p>