Open jeffnaus opened 5 years ago
We are attempting to catalog MODIS data sets and have found some issues with the boundary polygons being incorrect. For instance this product: MOD09GQ.A2017112.h23v02.006.2017114034459.hdf found here https://s3-us-west-2.amazonaws.com/modis-pds/MOD09GQ.006/23/02/2017112/MOD09GQ.A2017112.h23v02.006.2017114034459.hdf.xml.
Has a boundary polygon in the XML like this:
Which does not seem correct. Note the product.json has the same values.
The tif (band 1) headers look like this: Corner Coordinates: Upper Left ( 5559752.598, 7783653.638) (146d11'24.79"E, 70d 0' 0.00"N) Lower Left ( 5559752.598, 6671703.118) (100d 0' 0.00"E, 60d 0' 0.00"N) Upper Right ( 6671703.118, 7783653.638) (175d25'41.75"E, 70d 0' 0.00"N) Lower Right ( 6671703.118, 6671703.118) (120d 0' 0.00"E, 60d 0' 0.00"N) Center ( 6115727.858, 7227678.378) (130d 8'27.91"E, 65d 0' 0.00"N)
Is there an issue with the data or am I misinterpreting what that boundary polygon in the XML?
We are attempting to catalog MODIS data sets and have found some issues with the boundary polygons being incorrect. For instance this product: MOD09GQ.A2017112.h23v02.006.2017114034459.hdf found here https://s3-us-west-2.amazonaws.com/modis-pds/MOD09GQ.006/23/02/2017112/MOD09GQ.A2017112.h23v02.006.2017114034459.hdf.xml.
Has a boundary polygon in the XML like this:
Which does not seem correct. Note the product.json has the same values.
The tif (band 1) headers look like this: Corner Coordinates: Upper Left ( 5559752.598, 7783653.638) (146d11'24.79"E, 70d 0' 0.00"N) Lower Left ( 5559752.598, 6671703.118) (100d 0' 0.00"E, 60d 0' 0.00"N) Upper Right ( 6671703.118, 7783653.638) (175d25'41.75"E, 70d 0' 0.00"N) Lower Right ( 6671703.118, 6671703.118) (120d 0' 0.00"E, 60d 0' 0.00"N) Center ( 6115727.858, 7227678.378) (130d 8'27.91"E, 65d 0' 0.00"N)
Is there an issue with the data or am I misinterpreting what that boundary polygon in the XML?