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Switch mean over to internal accumulation state

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Erica Fischer
2025-01-30 12:23:42 -08:00
parent 9c299ba653
commit bc6b5f3d96
5 changed files with 15 additions and 16 deletions
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attribute.cpp
+6 -12
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@@ -120,19 +120,13 @@ static void preserve_attribute1(attribute_op const &op, std::string const &key,
}
case op_mean: {
auto state = attribute_accum_state.find(key);
if (state == attribute_accum_state.end()) {
accum_state s;
s.sum = full_values[i].to_double() + val.to_double();
s.count = 2;
attribute_accum_state.insert(std::pair<std::string, accum_state>(key, s));
full_values[i] = (s.sum / s.count);
size_t count = full_values[i].get_count();
if (count <= 1) {
full_values[i].set_double_count((full_values[i].to_double() + val.to_double()) / 2, 2);
} else {
state->second.sum += val.to_double();
state->second.count += 1;
full_values[i] = (state->second.sum / state->second.count);
double sum = full_values[i].to_double() * count + val.to_double();
count++;
full_values[i].set_double_count(sum / count, count);
}
return;
}