Estou tentando remapear de geoestacionário para lambert conforme gdalwarp. Meus dados de entrada estão em netcdf e em coordenadas geográficas (graus) e eu gostaria de enviar os dados remapeados para o netcdf. Eu criei um arquivo vrt correspondente para os dados netcdf de entrada. Gdalwarp produzirá o arquivo netcdf, mas os dados de saída são todos zeros e recebo o seguinte erro:
Creating output file that is 5120P x 5120L.
Processing input file netcdf.vrt.
ERROR 1: Too many points (441 out of 441) failed to transform,
unable to compute output bounds.
Warning 1: Unable to compute source region for output window 0,0,5120,5120, skipping.
0...10...20...30...40...50...60...70...80...90...100 - done.
Eu tentei o seguinte comando:
/usr/bin/gdalwarp -s_srs "+proj=geos +h=35785831 +lon_0=-75 +x_0=-0.151844 +y_0=0.151844 +a=6378140 +b=6356754.99999591 +units=degrees +no_defs" -t_srs "+proj=lcc +ellps=clrk66 +a=6378137 +b=6378137 +e=0.0818191910435 +lat_0=24.9999 +lon_0=-95 +lat_1=24.9999 +lat_ts=25.0001 +units=meters +no_defs" -te -1952976.3246 -828316.5944 3248431.6754 4373091.4056 -of netCDF -geoloc -overwrite -r bilinear -ts 5120 5120 netcdf.vrt out.nc
O gdalwarp pode remapear das coordenadas geográficas para o projetado? Ou preciso traduzir primeiro o geográfico para o projetado? Além disso, o gdalwarp pode ler as informações da projeção diretamente do netcdf ou precisa escrever primeiro no .vrt?
Aqui está o que o gdalinfo gera no arquivo de entrada: (é um arquivo do GOES 13 da CLASS)
Size is 512, 512
Coordinate System is `'
Metadata:
NC_GLOBAL#Conventions=CF-1.4
NC_GLOBAL#Satellite Sensor=G-13 IMG
NC_GLOBAL#Source=McIDAS Area File
Subdatasets:
SUBDATASET_1_NAME=NETCDF:"goes13.2013.100.165517.BAND_04.nc":auditTrail
SUBDATASET_1_DESC=[3x80] auditTrail (8-bit character)
SUBDATASET_2_NAME=NETCDF:"goes13.2013.100.165517.BAND_04.nc":data
SUBDATASET_2_DESC=[1x665x2036] data (32-bit floating-point)
SUBDATASET_3_NAME=NETCDF:"goes13.2013.100.165517.BAND_04.nc":lat
SUBDATASET_3_DESC=[665x2036] lat (32-bit floating-point)
SUBDATASET_4_NAME=NETCDF:"goes13.2013.100.165517.BAND_04.nc":lon
SUBDATASET_4_DESC=[665x2036] lon (32-bit floating-point)
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0, 512.0)
Upper Right ( 512.0, 0.0)
Lower Right ( 512.0, 512.0)
Center ( 256.0, 256.0)
E informações adicionais sobre a variável de dados:
Driver: netCDF/Network Common Data Format
Files: goes13.2013.100.174518.BAND_04.nc
Size is 2036, 665
Coordinate System is `'
Metadata:
data#coordinates=lon lat
data#long_name=0-255 Brightness Temperature
data#type=VISR
NC_GLOBAL#Conventions=CF-1.4
NC_GLOBAL#Satellite Sensor=G-13 IMG
NC_GLOBAL#Source=McIDAS Area File
NETCDF_DIM_EXTRA={time}
NETCDF_DIM_time_DEF={1,4}
NETCDF_DIM_time_VALUES=1365615900
time#long_name=seconds since 1970-1-1 0:0:0
time#units=seconds since 1970-1-1 0:0:0
Geolocation:
LINE_OFFSET=0
LINE_STEP=1
PIXEL_OFFSET=0
PIXEL_STEP=1
SRS=GEOGCS["WGS 84",DATUM["WGS_1984",SPHEROID["WGS 84",6378137,298.257223563,AUTHORITY["EPSG","7030"]],TOWGS84[0,0,0,0,0,0,0],AUTHORITY["EPSG","6326"]],PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]],UNIT["degree",0.0174532925199433,AUTHORITY["EPSG","9108"]],AUTHORITY["EPSG","4326"]]
X_BAND=1
X_DATASET=NETCDF:"goes13.2013.100.174518.BAND_04.nc":lon
Y_BAND=1
Y_DATASET=NETCDF:"goes13.2013.100.174518.BAND_04.nc":lat
Corner Coordinates:
Upper Left ( 0.0, 0.0)
Lower Left ( 0.0, 665.0)
Upper Right ( 2036.0, 0.0)
Lower Right ( 2036.0, 665.0)
Center ( 1018.0, 332.5)
Band 1 Block=2036x1 Type=Float32, ColorInterp=Undefined
NoData Value=9.96920996838686905e+36
Metadata:
coordinates=lon lat
long_name=0-255 Brightness Temperature
NETCDF_DIM_time=1365615900
NETCDF_VARNAME=data
type=VISR
Qualquer ajuda será muito apreciada!