matlab.io.hdf4.sd
Low-level access to HDF4 multifile scientific datasets (SD)
Description
To use these MATLAB® functions, you should be familiar with the HDF SD C API. In most cases, the syntax
of the MATLAB function is similar to the syntax of the corresponding HDF library function. The
functions are implemented as the namespace matlab.io.hdf4.sd. To use this
namespace, prefix the function name with a namespace path, or use the import function to add the
namespace to the current import list, prior to calling the function, for
example,
import matlab.io.hdf4.*
sdID = sd.start("myfile.hdf","read");
Access
| matlab.io.hdf4.sd.close | Terminate access to SD interface |
| matlab.io.hdf4.sd.endAccess | Terminate access to dataset |
| matlab.io.hdf4.sd.getFilename | Name of file |
| matlab.io.hdf4.sd.select | Identifier of dataset with specified index |
| matlab.io.hdf4.sd.setExternalFile | Store data in external file |
| matlab.io.hdf4.sd.start | Open HDF file and initialize SD interface |
Read/Write
| matlab.io.hdf4.sd.create | Create new dataset |
| matlab.io.hdf4.sd.readData | Read subsample of data |
| matlab.io.hdf4.sd.setFillMode | Set current fill mode of file |
| matlab.io.hdf4.sd.writeData | Write to dataset |
Inquiry
| matlab.io.hdf4.sd.fileInfo | Number of datasets and global attributes in file |
| matlab.io.hdf4.sd.getCompInfo | Information about dataset compression |
| matlab.io.hdf4.sd.getInfo | Information about dataset |
| matlab.io.hdf4.sd.idToRef | Reference number corresponding to dataset identifier |
| matlab.io.hdf4.sd.idType | Type of object |
| matlab.io.hdf4.sd.isCoordVar | Determine if dataset is a coordinate variable |
| matlab.io.hdf4.sd.isRecord | Determine if dataset is appendable |
| matlab.io.hdf4.sd.nameToIndex | Index value of named dataset |
| matlab.io.hdf4.sd.nameToIndices | List of datasets with same name |
| matlab.io.hdf4.sd.refToIndex | Index of dataset corresponding to reference number |
Dimensions
| matlab.io.hdf4.sd.dimInfo | Information about dimension |
| matlab.io.hdf4.sd.getDimID | Dimension identifier |
| matlab.io.hdf4.sd.getDimScale | Scale data for dimension |
| matlab.io.hdf4.sd.setDimName | Associate name with dimension |
| matlab.io.hdf4.sd.setDimScale | Set scale values for dimension |
User-defined Attributes
| matlab.io.hdf4.sd.attrInfo | Information about attribute |
| matlab.io.hdf4.sd.findAttr | Index of specified attribute |
| matlab.io.hdf4.sd.readAttr | Read attribute value |
| matlab.io.hdf4.sd.setAttr | Write attribute value |
Predefined Attributes
| matlab.io.hdf4.sd.getCal | Dataset calibration information |
| matlab.io.hdf4.sd.getDataStrs | Predefined attributes for dataset |
| matlab.io.hdf4.sd.getDimStrs | Predefined attributes for dimension |
| matlab.io.hdf4.sd.getFillValue | Fill value for dataset |
| matlab.io.hdf4.sd.getRange | Maximum and minimum range values |
| matlab.io.hdf4.sd.setCal | Set dataset calibration information |
| matlab.io.hdf4.sd.setDataStrs | Set predefined attributes for dataset |
| matlab.io.hdf4.sd.setDimStrs | Set label, unit, and format attributes |
| matlab.io.hdf4.sd.setFillValue | Set fill value for dataset |
| matlab.io.hdf4.sd.setRange | Set maximum and minimum range value for dataset |
Chunking/Tiling Operations
| matlab.io.hdf4.sd.getChunkInfo | Chunk size for dataset |
| matlab.io.hdf4.sd.readChunk | Read chunk from dataset |
| matlab.io.hdf4.sd.setChunk | Set chunk size and compression method of dataset |
| matlab.io.hdf4.sd.writeChunk | Write chunk to dataset |
Compression
| matlab.io.hdf4.sd.setCompress | Set compression method of dataset |
| matlab.io.hdf4.sd.setNBitDataSet | Specify nonstandard bit length for dataset values |
