Please help me understand something about pie chart.
Can I get sum of values in specific field of documents for documents which are unique in another field (as slice size). For example, we have documents with fields "Number of apples" and "id" of person, who has these apples in his bag. We get new documents about these people with (often) unchanged number of apples several times per hour. When we choose sum of "Number of apples" as slice size, we want to count this field only once for specific person, so we want to get sum of "Number of apples" for documents which are unique in "id" field. How can we do it?
Sorry for my bad English! Hope, my question is clear.