Results of PGPLOT example 16

1. Example 16-1
   Upper row
   
   • left - a bar chart
   • right - a grouped bar chart (no surrounding box)
   
   Lower row
   
   • left - a stacked bar chart
   • right - a grouped bar chart with negative values
   
   
2. Example 16-2
   Upper row
   
   • left - a stacked bar chart with negative values
   • right - Bar chart
   
   Lower row
   
   • left - Grouped Bar chart
   • right - Stacked Bar chart
   
   
3. Example16-3
   Upper row
   • left - Grouped Bar Chart with Negative Values
   • right - Stacked Bar Chart with Negative Values
   
   Lower row
   • left - Stacked Bar Chart (Hatched)
   • right - Grouped Bar Chart (Hatched)
   
   
4. Example 16-4
   
   • left - Bar Chart (Hatched)
   • right - Bar Chart