matlab读取hdf显示,matlab读取.hdf文件

matlab读取.hdf文件

打开hdf文件，以臭氧廓线数据为例

file = ‘OMI-Aura_L2-OMO3PR_2009m0107t1808-o23846_v003-2009m1025t065521.he5’;

file_id = H5F.open(file);

% open data

data_path = ‘/HDFEOS/SWATHS/O3Profile/Data Fields/O3’;

data_id = H5D.open (file_id, data_path);

lat_path=‘HDFEOS/SWATHS/O3Profile/Geolocation Fields/Latitude’;

lat_id=H5D.open(file_id, lat_path);

lon_path=‘HDFEOS/SWATHS/O3Profile/Geolocation Fields/Longitude’;

lon_id=H5D.open(file_id, lon_path);

alt_path=‘HDFEOS/SWATHS/O3Profile/Geolocation Fields/Altitude’;

alt_id=H5D.open(file_id, alt_path);

pressure_path=‘HDFEOS/SWATHS/O3Profile/Geolocation Fields/Pressure’;

pressure_id=H5D.open(file_id, pressure_path);

% ========= Read-in variables from data ========================

data=H5D.read (data_id);

lat=H5D.read(lat_id);

lon=H5D.read(lon_id);

alt=H5D.read(alt_id);

pressure=H5D.read(pressure_id);

% ========= Read-in metadata ========================

% Read units

ATTRIBUTE = ‘Units’;

attr_id = H5A.open_name (data_id, ATTRIBUTE);

units = H5A.read(attr_id);

% Read the offset.

ATTRIBUTE = ‘Offset’;

attr_id = H5A.open_name (data_id, ATTRIBUTE);

offset = H5A.read(attr_id);

% Read the scale.

ATTRIBUTE = ‘ScaleFactor’;

attr_id = H5A.open_name (data_id, ATTRIBUTE);

scale = H5A.read(attr_id);

% Read the fill value.

ATTRIBUTE = ‘_FillValue’;

attr_id = H5A.open_name (data_id, ATTRIBUTE);

fillvalue=H5A.read (attr_id);

attr_id = H5A.open_name (alt_id, ATTRIBUTE);

fillvalue_alt=H5A.read (attr_id);

% Read the missing value.

ATTRIBUTE = ‘MissingValue’;

attr_id = H5A.open_name (data_id, ATTRIBUTE);

missingvalue=H5A.read (attr_id);

attr_id = H5A.open_name (alt_id, ATTRIBUTE);

missingvalue_alt=H5A.read (attr_id);

% Read title attribute.

ATTRIBUTE = ‘Title’;

attr_id = H5A.open_name (data_id, ATTRIBUTE);

long_name=H5A.read (attr_id, ‘H5ML_DEFAULT’);

% Replace fill values with NaN

data(datafillvalue) = NaN;

alt(altfillvalue_alt) = NaN;

% Replace missing values with NaN

data(datamissingvalue) = NaN;

alt(altmissingvalue_alt) = NaN;

% Apply scale and offset, the equation is "scale (data-offset)".

% In this example the ozone scale=1.0 and offset=0.0 so it does nothing.

% However, this may be useful for other variables or datasets.

data = scale(data-offset);

标签：H5A,open,ATTRIBUTE,hdf,matlab,attr,data,id,读取

来源： https://blog.csdn.net/qq_42010248/article/details/99988607