Aggregation
ZingGrid has default behaviors for calculating the average, count, min, max, and sum values for a given column. These aggregation values are displayed in a single row at the base of the grid.
Average
Display the average of a column's values in the footer.
<zg-column index="exampleIndexName" foot-cell="avg"></zg-column>
Count
Display the count of a column's items (i.e., the number of rows containing data) in the footer.
<zg-column index="exampleIndexName" foot-cell="count"></zg-column>
Min
Display the minimum value of a column in the footer.
<zg-column index="exampleIndexName" foot-cell="min"></zg-column>
Max
Display the maximum value of a column in the footer.
<zg-column index="exampleIndexName" foot-cell="max"></zg-column>
Sum
Display the sum total of a column's values in the footer.
<zg-column index="exampleIndexName" foot-cell="sum"></zg-column>
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