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HDF5 File Organization
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Name and describe the two primary objects that can be stored in an HDF5 file.
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What is an attribute?
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Give the path name for an object called
harry
that is a member of a group called dick
, which, in turn, is a member of the root group.
The HDF5 API
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Describe the purpose of each of the following HDF5 APIs:
H5A, H5D, H5E, H5F, H5G, H5T, H5Z
Creating an HDF5 File
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What two HDF5 routines must be called to create an HDF5 file?
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What include file must be included in any file that uses the HDF5 library?
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An HDF5 file is never completely empty because as soon as it is created, it automatically contains a certain primary object. What is that object?
Creating a Dataset
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Name and describe two major datatype categories.
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List the HDF5 atomic datatypes. Give an example of a predefined datatype. How would you create a string dataset?
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What does the dataspace describe? What are the major characteristics of the simple dataspace?
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What information needs to be passed to the H5Dcreate function, i.e., what information is needed to describe a dataset at creation time?
Reading From and Writing To a Dataset
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What are six pieces of information which need to be specified for reading and writing a dataset?
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Why are both the memory dataspace and file dataspace needed for read/write operations, while only the memory datatype is required?
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In Figure 6.1, what does this line mean?
DATASPACE { SIMPLE (4 , 6 ) / ( 4 , 6 ) }
Creating an Attribute
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What is an attribute?
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Can partial I/O operations be performed on attributes?
Creating an Group
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What are the two primary objects that can be included in a group?
Creating Groups using Absolute and Relative Names
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Group names can be specified in two ways. What are these two types of group names?
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You have a dataset named
moo
in the group boo
, which is in the group foo
, which, in turn, is in the root
group. How would you specify an absolute name to access this dataset?
Creating Datasets in Groups
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Describe a way to access the dataset moo described in the previous section (question 2) using a relative name. Describe a way to access the same dataset using an absolute name.
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Navigate back: Main / Getting Started with HDF5 / Learning the Basics