Following the constructors and parameter definitions set out above, a Category Pattern Report could be added and defined in the PIN file as follows:

rw.addReport(new CategoryReport("detail/areaTreatedLmu/period10", 
                                "Area by LMU and Species code for period 10",
                                "hectares", 
                                control.getBlockTable(),
                                "product.Area.managed",
                                "LMU",
                                lmu,
                                new int[] {10},
                                "Spatial Planning Systems",
                                false));

This PIN file definition of a Category Pattern Report was used to create the above output examples. The filename "detail/areaTreatedLmu/period" creates three files "period10.html, period10.csv, and period10.png" and places them in a subfolder of "detail/areaTreatedLmu". This type of filename definition allows the Report Writer to create the well organized directory tree of folders, subfolders and individual reports.

The title of the report will be "Area by LMU and Species code for period 10" and will be followed by the name of the entire scenario folder. This title will also be used in the PNG sub-report along the top of the bar chart. This stacked bar chart will have "hectares" as the units along the Y-axis.

The columnPrefix used to search for unique attribute categories was specified as "product.Area.", therefore any attribute in the Block Table (control.getBlockTable()) that began with this prefix was used to create the report. This prefix was removed when the column headings were created (managed.DF, managed.LA, ...).

"LMU" is the categoryColumn being used to classify the attribute values found with the Prefix into categories. The variable name 'values' (defined above) can then be used as the categories parameter.

This particular report is only gathering information from one period, period 10. More information could have been included in this report by adding more periods to the array list({10,11,12,13}).

The company name "Spatial Planning Systems" was added in the additionalHTML parameter and will appear underneath the embedded PNG bar chart. Finally, the values in the report are not percentages of the row totals, they are absolute values specified by setting the computePercentparameter to "false".

	Important
	The Category Expression report is identical to the Category Pattern Report, except that instead of simply supplying a pattern, you will have the option of supplying an expression that includes the pattern, i.e. feature.Area.managed*TOTALAREA, or feature.Area.managed*10000. See the section called “Category Expression Report”.