NSIDC

nsidc_south_vrt_text(date, ..., .local_root = NULL)

nsidc_north_vrt_text(date, ..., .local_root = NULL)

Arguments

date

date-time, date, or convertible character string

...

Arguments passed on to nsidc_south_files

.local_root

allows local use, to shortcut and use the local data library (under expert guidance)

Value

VRT text, used by GDAL

Details

Details

Examples

nsidc_south_vrt_text("2010-01-01")
#> <VRTDataset rasterXSize="316" rasterYSize="332"> #> <VRTRasterBand dataType="Byte" band="1" subClass="VRTRawRasterBand"> #> <SourceFilename relativetoVRT="1">/vsicurl/ftp://sidads.colorado.edu/pub/DATASETS/nsidc0051_gsfc_nasateam_seaice/final-gsfc/south/daily/2010/nt_20100101_f17_v1.1_s.bin</SourceFilename> #> <ImageOffset>300</ImageOffset> #> <PixelOffset>1</PixelOffset> #> <LineOffset>316</LineOffset> #> </VRTRasterBand> #> <SRS>PROJCRS["WGS 84 / NSIDC Sea Ice Polar Stereographic South", #> BASEGEOGCRS["WGS 84", #> DATUM["World Geodetic System 1984", #> ELLIPSOID["WGS 84",6378137,298.257223563, #> LENGTHUNIT["metre",1]]], #> PRIMEM["Greenwich",0, #> ANGLEUNIT["degree",0.0174532925199433]], #> ID["EPSG",4326]], #> CONVERSION["US NSIDC Sea Ice polar stereographic south", #> METHOD["Polar Stereographic (variant B)", #> ID["EPSG",9829]], #> PARAMETER["Latitude of standard parallel",-70, #> ANGLEUNIT["degree",0.0174532925199433], #> ID["EPSG",8832]], #> PARAMETER["Longitude of origin",0, #> ANGLEUNIT["degree",0.0174532925199433], #> ID["EPSG",8833]], #> PARAMETER["False easting",0, #> LENGTHUNIT["metre",1], #> ID["EPSG",8806]], #> PARAMETER["False northing",0, #> LENGTHUNIT["metre",1], #> ID["EPSG",8807]]], #> CS[Cartesian,2], #> AXIS["easting (X)",north, #> MERIDIAN[90, #> ANGLEUNIT["degree",0.0174532925199433]], #> ORDER[1], #> LENGTHUNIT["metre",1]], #> AXIS["northing (Y)",north, #> MERIDIAN[0, #> ANGLEUNIT["degree",0.0174532925199433]], #> ORDER[2], #> LENGTHUNIT["metre",1]], #> USAGE[ #> SCOPE["Polar research."], #> AREA["Southern hemisphere - south of 60S onshore and offshore - Antarctica."], #> BBOX[-90,-180,-60,180]], #> ID["EPSG",3976]]</SRS> #> <GeoTransform> -3.9500000000000000e+06, 2.5000000000000000e+04, 0.0000000000000000e+00, 4.3500000000000000e+06, 0.0000000000000000e+00, -2.5000000000000000e+04</GeoTransform> #> </VRTDataset>
nsidc_north_vrt_text("2010-01-01")
#> <VRTDataset rasterXSize="304" rasterYSize="448"> #> <VRTRasterBand dataType="Byte" band="1" subClass="VRTRawRasterBand"> #> <SourceFilename relativetoVRT="1">/vsicurl/ftp://sidads.colorado.edu/pub/DATASETS/nsidc0051_gsfc_nasateam_seaice/final-gsfc/north/daily/2010/nt_20100101_f17_v1.1_n.bin</SourceFilename> #> <ImageOffset>300</ImageOffset> #> <PixelOffset>1</PixelOffset> #> <LineOffset>304</LineOffset> #> </VRTRasterBand> #> <SRS> #> PROJCRS["WGS 84 / NSIDC Sea Ice Polar Stereographic North", #> BASEGEOGCRS["WGS 84", #> DATUM["World Geodetic System 1984", #> ELLIPSOID["WGS 84",6378137,298.257223563, #> LENGTHUNIT["metre",1]]], #> PRIMEM["Greenwich",0, #> ANGLEUNIT["degree",0.0174532925199433]], #> ID["EPSG",4326]], #> CONVERSION["US NSIDC Sea Ice polar stereographic north", #> METHOD["Polar Stereographic (variant B)", #> ID["EPSG",9829]], #> PARAMETER["Latitude of standard parallel",70, #> ANGLEUNIT["degree",0.0174532925199433], #> ID["EPSG",8832]], #> PARAMETER["Longitude of origin",-45, #> ANGLEUNIT["degree",0.0174532925199433], #> ID["EPSG",8833]], #> PARAMETER["False easting",0, #> LENGTHUNIT["metre",1], #> ID["EPSG",8806]], #> PARAMETER["False northing",0, #> LENGTHUNIT["metre",1], #> ID["EPSG",8807]]], #> CS[Cartesian,2], #> AXIS["easting (X)",south, #> MERIDIAN[45, #> ANGLEUNIT["degree",0.0174532925199433]], #> ORDER[1], #> LENGTHUNIT["metre",1]], #> AXIS["northing (Y)",south, #> MERIDIAN[135, #> ANGLEUNIT["degree",0.0174532925199433]], #> ORDER[2], #> LENGTHUNIT["metre",1]], #> USAGE[ #> SCOPE["Polar research."], #> AREA["Northern hemisphere - north of 60N onshore and offshore, including Arctic."], #> BBOX[60,-180,90,180]], #> ID["EPSG",3413]] #> </SRS> #> <GeoTransform> -3.8375000000000000e+06, 2.5000000000000000e+04, 0.0000000000000000e+00, 5.8375000000000000e+06, 0.0000000000000000e+00, -2.5000000000000000e+04</GeoTransform> #> #> </VRTDataset>