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Introduction

The NRT Spatial Data Format extends the NRT Data Format with a geometry column. It is used to create the possibilty to describe both, simple and complex geometries for visualisation products.


o2a.GeoCSV Format version 1

Definition for Format version 1 is in progress and is not yet proofed. It is basically a GeoCSV using the WKT notation.


o2a.GeoCSV Example

datetime    vessel:polarstern:mins:latitude [deg]  vessel:polarstern:mins:longitude [deg]  vessel:polarstern:tsk1:salinity [psu]  vessel:polarstern:geometry [point]
2019-02-28 15:50:00.000  34.03449  -14.17956  34.1234  POINT(34.03449 -14.17956)
2019-02-28 15:50:01.000  34.03449  -14.17956  34.1345  POINT(34.03449 -14.17956)
2019-02-28 15:50:02.000  34.03449  -14.17956  34.1456  POINT(34.03449 -14.17956)

Format

For complete description see 'Format' in NRT Data Format Version 2.


WhatHow
Geometry Header - Units

The 'unit' in square brackets '[ ]' is used for describing the geometry type. If empty 'point' is the default. If no 'datetime' the row will be deleted.

datetime    type:dev:longitude [deg]    type:dev:latitude [deg] type:dev:parameter1 [°C] type:dev:geometry [point]

datetime    type:dev:parameter1 [°C]    type:dev:geometry [line]

datetime    type:dev:parameter1 [°C]    type:dev:geometry [polygon]

Tasks

What is with DOI based data?


o2a.GeoTiff Format version 1

Definition for Format version 1 is in progress and is not yet proofed. An GeoTiff with defined metadata tags. The advantage is to store the SensorURN and/or DOI and/or additional metadata tags in

o2a.GeoTiff Example

Driver: GTiff/GeoTIFF
Files: ../Downloads/SeaIceRgb.tiff
Size is 1170, 385
Coordinate System is:
GEOGCS["WGS 84",
  DATUM["WGS_1984",
    SPHEROID["WGS 84",6378137,298.257223563,
    AUTHORITY["EPSG","7030"]],
    AUTHORITY["EPSG","6326"]],
  PRIMEM["Greenwich",0],
  UNIT["degree",0.0174532925199433],
  AUTHORITY["EPSG","4326"]]
Origin = (55.375000000188301,87.291666666664497)
Pixel Size = (0.041666666666700,-0.041666666666700)
Metadata:
    AREA_OR_POINT=Area

    SENSOR_URN=satellite:gcomw1:amsr2:l2:sic 

    DOI=PANGAEA.123456

    PARAMETER_UNIT=%

Image Structure Metadata:
    INTERLEAVE=PIXEL
Corner Coordinates:
  Upper Left ( 55.3750000, 87.2916667) ( 55d22'30.00"E, 87d17'30.00"N)
  Lower Left ( 55.3750000, 71.2500000) ( 55d22'30.00"E, 71d15' 0.00"N)
  Upper Right ( 104.1250000, 87.2916667) (104d 7'30.00"E, 87d17'30.00"N)
  Lower Right ( 104.1250000, 71.2500000) (104d 7'30.00"E, 71d15' 0.00"N)
Center ( 79.7500000, 79.2708333) ( 79d45' 0.00"E, 79d16'15.00"N)
Band 1 Block=1170x2 Type=Byte, ColorInterp=Red
Band 2 Block=1170x2 Type=Byte, ColorInterp=Green
Band 3 Block=1170x2 Type=Byte, ColorInterp=Blue

Format

ToDo

Tasks

The metadata tags must be tested in the processing workflow.a

o2a.NetCDF Format version 1

Format version 1 is not yet proofed.


o2a.NetCDF Example

ToDo

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