-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi,
I'm trying to access Modis data (Terra) with gdal through the python API. I'm following the gdal tutorial http://www.gdal.org/gdal_tutorial.html, but get stuck at the rasterband reading part, with an error: Traceback (most recent call last): File "gdaltest.py", line 24, in <module> print 'Band Type=',gdal.GetDataTypeName(band.DataType) AttributeError: 'NoneType' object has no attribute 'DataType' which means that the line: band = dataset.GetRasterBand(1) did return None. Does anyone have an idea of what is going on ? I join the gdaltest.py and the dump of the file from gdalinfo (removed some lengthy metadata). Thanks, Martin -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.9 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ iQEcBAEBAgAGBQJLh5HaAAoJEBdvyODiyJI4FoUH/jIbIM2s+rWq9V01CYRxjv+B PsvKJwIIL2saJ/ozuGlg6K3VMofW4eRRgOq877S6nnuVFSn1Ex0LnL01TKJIqoQF z9oOAY5knq/c2L37F2M1Y1ROg7hXyu0aTRsJD4+dkEBztu1DXSyC9j1ziYZYf52w /F0rWAkUjo1z+VuLnAbuqMX/41aHSLQCh5ksMaTv7+aw1QebAwL05IaKAKlEEbLE Mo8PpZfEl9NeoMyGkm8hK92dkpGxiFTozBmrGZy8zISmY5P3NpuUXDJGMQvX+OHY 3Hf+hHhYZhCXMVKNgM1ECs+SfFQFzegU9W+v5BFxL/VsuG3uwAhDJyhU/XuOcCY= =UQkq -----END PGP SIGNATURE-----
import gdal
from gdalconst import *
filename =
"/local_disk/data/satellite/terra/MOD021KM.A2005161.0920.005.2005161194747.hdf"
dataset = gdal.Open( filename, GA_ReadOnly )
if dataset is None:
print "Dataset is None"
print 'Driver: ', dataset.GetDriver().ShortName,'/', \
dataset.GetDriver().LongName
print 'Size is ',dataset.RasterXSize,'x',dataset.RasterYSize, \
'x',dataset.RasterCount
print 'Projection is ',dataset.GetProjection()
geotransform = dataset.GetGeoTransform()
if not geotransform is None:
print 'Origin = (',geotransform[0], ',',geotransform[3],')'
print 'Pixel Size = (',geotransform[1], ',',geotransform[5],')'
band = dataset.GetRasterBand(1)
print 'Band Type=',gdal.GetDataTypeName(band.DataType)
min = band.GetMinimum()
max = band.GetMaximum()
if min is None or max is None:
(min,max) = band.ComputeRasterMinMax(1)
print 'Min=%.3f, Max=%.3f' % (min,max)
if band.GetOverviewCount() > 0:
print 'Band has ', band.GetOverviewCount(), ' overviews.'
if not band.GetRasterColorTable() is None:
print 'Band has a color table with ', \
band.GetRasterColorTable().GetCount(), ' entries.'
scanline = band.ReadRaster( 0, 0, band.XSize, 1, \
band.XSize, 1, GDT_Float32 )
gdal.Close(dataset)
Driver: HDF4/Hierarchical Data Format Release 4 Files: MOD021KM.A2005161.0920.005.2005161194747.hdf Size is 512, 512 Coordinate System is `' Metadata: HDFEOSVersion=HDFEOS_V2.9 HDFEOS_FractionalOffset_10*nscans_MODIS_SWATH_Type_L1B=0 HDFEOS_FractionalOffset_Max_EV_frames_MODIS_SWATH_Type_L1B=0 LOCALGRANULEID=MOD021KM.A2005161.0920.005.2005161194747.hdf PRODUCTIONDATETIME=2005-06-10T19:47:48.000Z DAYNIGHTFLAG=Day REPROCESSINGACTUAL=processed once REPROCESSINGPLANNED=further update is anticipated SCIENCEQUALITYFLAG=Not Investigated AUTOMATICQUALITYFLAGEXPLANATION=not being investigated AUTOMATICQUALITYFLAG=Suspect QAPERCENTMISSINGDATA=0 QAPERCENTOUTOFBOUNDSDATA=52 QAPERCENTINTERPOLATEDDATA=0 PARAMETERNAME=EV_1KM_RefSB SCIENCEQUALITYFLAG=Not Investigated AUTOMATICQUALITYFLAGEXPLANATION=not being investigated AUTOMATICQUALITYFLAG=Suspect QAPERCENTMISSINGDATA=0 QAPERCENTOUTOFBOUNDSDATA=0 QAPERCENTINTERPOLATEDDATA=0 PARAMETERNAME=EV_1KM_Emissive EQUATORCROSSINGDATE=2005-06-10 EQUATORCROSSINGTIME=09:38:13.976074 ORBITNUMBER=29140 EQUATORCROSSINGLONGITUDE=12.7623657291106 VERSIONID=5 SHORTNAME=MOD021KM INPUTPOINTER=LGID:MOD01:005:MOD01.A2005161.0915.005.2005161191258.hdf, LGID:MOD01:005:MOD01.A2005161.0920.005.2005161191440.hdf, LGID:MOD01:005:MOD01.A2005161.0925.005.2005161191649.hdf, MOD02_Reflective_LUTs.hdf.V5.0.6.4.coeff, MOD02_Emissive_LUTs.hdf.V5.0.6.4.coeff, MOD02_QA_LUTs.hdf.V5.0.6.4.coeff GRINGPOINTLONGITUDE=8.7597011923161, 55.6532739676118, 40.0391675744443, 9.38789658628149 GRINGPOINTLATITUDE=66.8481307216782, 60.1649488030506, 44.3272211294195, 48.4759872891678 GRINGPOINTSEQUENCENO=1, 2, 3, 4 EXCLUSIONGRINGFLAG=N RANGEENDINGDATE=2005-06-10 RANGEENDINGTIME=09:25:00.000000 RANGEBEGINNINGDATE=2005-06-10 RANGEBEGINNINGTIME=09:20:00.000000 PGEVERSION=5.0.6 ANCILLARYINPUTPOINTER=LGID:MOD03:005:MOD03.A2005161.0920.005.2005161192012.hdf ANCILLARYINPUTTYPE=Geolocation ASSOCIATEDSENSORSHORTNAME=MODIS ASSOCIATEDPLATFORMSHORTNAME=Terra ASSOCIATEDINSTRUMENTSHORTNAME=MODIS AveragedBlackBodyTemperature= 290.02 AveragedMirrorTemperature= 276.36 AveragedFocalPlane1Temperature= 269.49 AveragedFocalPlane2Temperature= 269.78 AveragedFocalPlane3Temperature= 83.39 AveragedFocalPlane4Temperature= 83.02 CalibrationQuality=marginal MissionPhase=EXECUTION NadirPointing=Y NORTHBOUNDINGCOORDINATE=66.9024176306048 SOUTHBOUNDINGCOORDINATE=44.4806525822938 EASTBOUNDINGCOORDINATE=55.6517447686945 WESTBOUNDINGCOORDINATE=9.37947978255603 ALGORITHMPACKAGEACCEPTANCEDATE=1999-12-14 ALGORITHMPACKAGEMATURITYCODE=OPERATIONAL ALGORITHMPACKAGENAME=MODIS Level 1B Algorithm Package ALGORITHMPACKAGEVERSION=5.0.6.4_Terra INSTRUMENTNAME=Moderate Resolution Imaging SpectroRadiometer PROCESSINGCENTER=GSFC DESCRREVISION=5.0 PRODUCTIONHISTORY=PGE02:5.0.6.4;PGE01:5.0.2 LONGNAME=MODIS/Terra Calibrated Radiances 5-Min L1B Swath 1km PROCESSINGENVIRONMENT=/usr/bsd/hostname Number of Scans=204 Number of Day mode scans=204 Number of Night mode scans=0 Incomplete Scans=0 Max Earth View Frames=1354 %Valid EV Observations=100, 99.21136, 99.99989, 99.99982, 99.99178, 99.99998, 99.92158, 77.74535, 50.97116, 41.75863, 37.40073, 33.14359, 24.75512, 14.11185, 26.32291, 8.996546, 5.195354, 5.656334, 96.05117, 100, 99.85711, 100, 99.93998, 99.96195, 99.94226, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100, 100 %Saturated EV Observations=0, 0.7886288, 9.955977e-05, 0.0001719669, 9.050887e-06, 0, 0, 22.14911, 48.40397, 58.16368, 62.59927, 66.85641, 75.24488, 85.88815, 73.67709, 91.00346, 94.80465, 94.34367, 3.94883, 0, 0.1428954, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 % L1A EV All Scan Data are Missing=0 % L1A EV RSB DN Not in Day Mode=0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 00, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 Bit QA Flags Last Value=819400 Bit QA Flags Change=8200 Granule Average QA Values=290.0298, 290.0169, 290.044, 290.023, 290.0063, 289.9778, 290.0536, 290.0276, 290.0271, 289.9987, 289.9916, 289.9913, 269.4888, 269.7763, 83.38789, 83.01974, 276.3508, 276.3605, 277.0281, 275.5197, 276.6356, 275.4676, 274.5634, 268.8403, 265.752, 267.1087, 267.2303, 82.72014, 82.85756, 126.2144, 126.1309, 185.1862, 5.768203, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 Electronics Redundancy Vector=22405973, 1048 Electronics Configuration Change=0, 0 Reflective LUT Serial Number and Date of Last Change=R090 2005:05:27:11:08 Emissive LUT Serial Number and Date of Last Change=E082 2005:05:27:11:08 QA LUT Serial Number and Date of Last Change=Q078 2005:05:27:11:08 Focal Plane Set Point State=1 Doors and Screens Configuration=224 Reflective Bands With Bad Data=0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0 Emissive Bands With Bad Data=0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 Noise in Black Body Thermistors=3, 2, 3, 2, 3, 2, 2, 3, 2, 2, 6, 2 Noise in Average BB Temperature=2 Noise in LWIR FPA Temperature=207 Noise in MWIR FPA Temperature=18 Noise in Scan Mirror Thermistor #1=63 Noise in Scan Mirror Thermistor #2=2 Noise in Scan Mirror Thermistor Average=9 Noise in Instrument Temperature=6 Noise in Cavity Temperature=3 Noise in Temperature of NIR FPA=0 Noise in Temperature of Vis FPA=0 Dead Detector List=0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, Subdatasets: SUBDATASET_1_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_1KM_RefSB SUBDATASET_1_DESC=[15x2040x1354] EV_1KM_RefSB MODIS_SWATH_Type_L1B (16-bit unsigned integer) SUBDATASET_2_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_1KM_RefSB_Uncert_Indexes SUBDATASET_2_DESC=[15x2040x1354] EV_1KM_RefSB_Uncert_Indexes MODIS_SWATH_Type_L1B (8-bit unsigned integer) SUBDATASET_3_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_1KM_Emissive SUBDATASET_3_DESC=[16x2040x1354] EV_1KM_Emissive MODIS_SWATH_Type_L1B (16-bit unsigned integer) SUBDATASET_4_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_1KM_Emissive_Uncert_Indexes SUBDATASET_4_DESC=[16x2040x1354] EV_1KM_Emissive_Uncert_Indexes MODIS_SWATH_Type_L1B (8-bit unsigned integer) SUBDATASET_5_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_250_Aggr1km_RefSB SUBDATASET_5_DESC=[2x2040x1354] EV_250_Aggr1km_RefSB MODIS_SWATH_Type_L1B (16-bit unsigned integer) SUBDATASET_6_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_250_Aggr1km_RefSB_Uncert_Indexes SUBDATASET_6_DESC=[2x2040x1354] EV_250_Aggr1km_RefSB_Uncert_Indexes MODIS_SWATH_Type_L1B (8-bit unsigned integer) SUBDATASET_7_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_250_Aggr1km_RefSB_Samples_Used SUBDATASET_7_DESC=[2x2040x1354] EV_250_Aggr1km_RefSB_Samples_Used MODIS_SWATH_Type_L1B (8-bit integer) SUBDATASET_8_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_500_Aggr1km_RefSB SUBDATASET_8_DESC=[5x2040x1354] EV_500_Aggr1km_RefSB MODIS_SWATH_Type_L1B (16-bit unsigned integer) SUBDATASET_9_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_500_Aggr1km_RefSB_Uncert_Indexes SUBDATASET_9_DESC=[5x2040x1354] EV_500_Aggr1km_RefSB_Uncert_Indexes MODIS_SWATH_Type_L1B (8-bit unsigned integer) SUBDATASET_10_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_500_Aggr1km_RefSB_Samples_Used SUBDATASET_10_DESC=[5x2040x1354] EV_500_Aggr1km_RefSB_Samples_Used MODIS_SWATH_Type_L1B (8-bit integer) SUBDATASET_11_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:Height SUBDATASET_11_DESC=[408x271] Height MODIS_SWATH_Type_L1B (16-bit integer) SUBDATASET_12_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:SensorZenith SUBDATASET_12_DESC=[408x271] SensorZenith MODIS_SWATH_Type_L1B (16-bit integer) SUBDATASET_13_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:SensorAzimuth SUBDATASET_13_DESC=[408x271] SensorAzimuth MODIS_SWATH_Type_L1B (16-bit integer) SUBDATASET_14_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:Range SUBDATASET_14_DESC=[408x271] Range MODIS_SWATH_Type_L1B (16-bit unsigned integer) SUBDATASET_15_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:SolarZenith SUBDATASET_15_DESC=[408x271] SolarZenith MODIS_SWATH_Type_L1B (16-bit integer) SUBDATASET_16_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:SolarAzimuth SUBDATASET_16_DESC=[408x271] SolarAzimuth MODIS_SWATH_Type_L1B (16-bit integer) SUBDATASET_17_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:gflags SUBDATASET_17_DESC=[408x271] gflags MODIS_SWATH_Type_L1B (8-bit unsigned integer) SUBDATASET_18_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_Band26 SUBDATASET_18_DESC=[2040x1354] EV_Band26 MODIS_SWATH_Type_L1B (16-bit unsigned integer) SUBDATASET_19_NAME=HDF4_EOS:EOS_SWATH:"MOD021KM.A2005161.0920.005.2005161194747.hdf":MODIS_SWATH_Type_L1B:EV_Band26_Uncert_Indexes SUBDATASET_19_DESC=[2040x1354] EV_Band26_Uncert_Indexes MODIS_SWATH_Type_L1B (8-bit unsigned integer) 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)
gdaltest.py.sig
Description: Binary data
moddump.sig
Description: Binary data
<<attachment: martin_raspaud.vcf>>
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