title: Heatmap generation
body: <p>I have an Excel file with two different columns. One column have values ranging from 2 to 15 and other column have values ranging from positive to negative numbers. </p>
  
  <p>I want to produce a heatmap in such a way that for first column each value should have a different color. Second column should be in the form of a gradient. </p>
  
  <p>I tried using excel conditional formatting to do this.</p>
  
  <p>But I want to know is there any way to do it in R?</p>