Hi! What you are seeing as doubling might be the zigzag-encoding of signed integers. See here: https://developers.google.com/protocol-buffers/docs/encoding#signed-integers
Jochen On Thu, Sep 26, 2019 at 01:14:03PM -0700, Pbf Crasher wrote: > Date: Thu, 26 Sep 2019 13:14:03 -0700 > From: Pbf Crasher <pbf.cras...@gmail.com> > To: osmosis-dev@openstreetmap.org > Subject: [osmosis-dev] Full History pbf's DenseInfo Values are Doubled for > Timestamp, Changeset and Uid > > Hi, > > I was reading full history pbf published on planet website and realized > that timestamp, changeset and uid values (which are delta coded) in > DenseInfo are all doubled. Anybody aware of this? > > For example, if you read DenseNodes in history-190916.osm.pbf > <https://planet.openstreetmap.org/pbf/full-history/history-190916.osm.pbf>. > > *First DenseNodes block:* > https://www.openstreetmap.org/node/1/history > DenseNode[0]: id: 1, lat: 0, lon: 0 > DenseInfo[0]: timestamp: 2294571334 (1147285667 x 2 => May 10, 2006 6:27:47 > PM), changeset: 18514 (9257 x 2), uid: 2596 (1298 x 2 > https://www.openstreetmap.org/api/0.6/user/1298), version: 1 > > DenseNode[1]: id: 1, lat: 20000000, lon: 20000000 > DenseInfo[1]: timestamp: 184876220 ((2294571334 + 184876220) / 2 = > 1239723777), changeset: 1030752 ((18514 + 1030752) / 2 = 524633), uid: 7732 > ((2596 + 7732) / 2 = 5164 => https://www.openstreetmap.org/api/0.6/user/5164), > version: 3 > > *Second DenseNodes block:* > https://www.openstreetmap.org/node/80923/history > DenseNode[0]: id: 80923, lat: 584375459, lon: 155271244 > DenseInfo[0]: timestamp: 2845668844 (1422834422 x 2 => February 1, 2015 > 11:47:02 PM), changeset: 57117152 (28558576 x 2), uid: 57550 (28775 x 2 => > https://www.openstreetmap.org/api/0.6/user/28775), version: 4 > > DenseNode[1]: id: 80923, lat: 584374940, lon: 155271345 > DenseInfo[1]: timestamp: 80492406 ((80492406 + 2845668844) / 2 = 1463080625 > => May 12, 2016 7:17:05 PM), changeset: 21434884 ((57117152 + 21434884) / 2 > = 39276018), uid: 109452 ((57550 + 109452) / 2 = 83501 => > https://www.openstreetmap.org/api/0.6/user/83501), version: 5 > _______________________________________________ > osmosis-dev mailing list > osmosis-dev@openstreetmap.org > https://lists.openstreetmap.org/listinfo/osmosis-dev -- Jochen Topf joc...@remote.org https://www.jochentopf.com/ +49-351-31778688 _______________________________________________ osmosis-dev mailing list osmosis-dev@openstreetmap.org https://lists.openstreetmap.org/listinfo/osmosis-dev
