I want to use 'avg' to calc the project's avg progress, and use this code

{name: 'progress', index:'progress', width: 70, formatter:'integer', summaryType: 'avg', summaryTpl: '<strong>avg: {0}</strong>' },

but  the {0} result has Decimal in some condition. summaryType's func only has 3 param (value, name, record), i can't define the result's style. So i thought to use custom-func, and then found i can't get the total number from one grouping ( grlen).

the src code say:

        "avg" : function(v, field, rc) {
            // the same as sum, but at end we divide it
            return parseFloat(v||0) + parseFloat((rc[field]||0));
        }

ehm...

I wonder the feature:  user can difine formatter for summaryType , same as col-formatter

I thought maybe it's better to invoke summaryType-func one by one on Grouping dataset , and pass through the grouping info (eg: the number rows of this group), not on record row.  So user can defined custom-func for summaryType easyly.

Thanks.