I have downloaded sample tile from
http://sentinel-s2-l1c.s3-website.eu-central-1.amazonaws.com/#tiles/10/S/DG/2015/12/7/0/
and found tileInfo.json
file with the following information
"tileGeometry" : {
"type" : "Polygon",
"crs" : {
"type" : "name",
"properties" : {
"name" : "urn:ogc:def:crs:EPSG:8.8.1:32610"
}
},
"coordinates" : [ [ [ 399960.0, 4200000.0 ], [ 509760.0, 4200000.0 ], [ 509760.0, 4090200.0 ], [ 399960.0, 4090200.0 ], [ 399960.0, 4200000.0 ] ] ]
},
It appears, that tile is strictly rectangular in some coordinates, because corners contain duplicate values. Is this property constraint, i.e. true for all tiles?
What units are used for these coordinates? I tried to interpret them as lat-lon multiplied by some factor, but probably failed (was unable to identify any ground details with compre to google maps).
Also I can interpret it as meters, because they have 6 digits and meters should have 5.
UPDATE
Both height and width are 109800
of units, so it can't be meters, which would sum up to 100000
. But it coincides with the number of pixels in tile.