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statistics: fix date ranges smaller than two days

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The calculation of the range was broken, it resulted in
a to-value smaller than the from-value, owing to a
sign-mismatch.

Signed-off-by: Berthold Stoeger <bstoeger@mail.tuwien.ac.at>
This commit is contained in:
Berthold Stoeger 2022-10-20 16:24:19 +02:00 committed by Dirk Hohndel
parent 56c91a46b6
commit 9ced3a3a4d
1 changed files with 3 additions and 3 deletions
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6
stats/statsaxis.cpp
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@ -584,15 +584,15 @@ static std::pair<bool, char> day_format()
// create year, month or day-based bins. This is certainly not efficient and may need // create year, month or day-based bins. This is certainly not efficient and may need
// some tuning. However, it should ensure that no crazy number of bins is generated. // some tuning. However, it should ensure that no crazy number of bins is generated.
// Ultimately, this should be replaced by a better and dynamic scheme // Ultimately, this should be replaced by a better and dynamic scheme
// From and to are given in seconds since "epoch". // From and to are given in days since "epoch".
static std::vector<HistogramAxisEntry> timeRangeToBins(double from, double to) static std::vector<HistogramAxisEntry> timeRangeToBins(double from, double to)
{ {
// from and two are given in days since the "Unix epoch". // from and two are given in days since the "Unix epoch".
// The lowest precision we do is two days. // The lowest precision we do is two days.
if (to - from < 2.0) { if (to - from < 2.0) {
double center = (from + to) / 2.0; double center = (from + to) / 2.0;
from = center + 1.0; from = center - 1.0;
to = center - 1.0; to = center + 1.0;
} }
std::vector<HistogramAxisEntry> res; std::vector<HistogramAxisEntry> res;