HDF Explorer

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HDF Explorer

ByPedro VicenteSpace Research,Inc
HDF-EOS WORKSHOP IV September 19, 20
21 2000 Landover, MD
www.space-research.pt
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Topics

• News (since Workshop II) Version 1.1 of HDF
  ExplorerHDF Inspector version 1.0
• Things to do next

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HDF Explorer

• What is HDF Explorer ?
• HDF data reader and visualization
• Data in a tree browsable window
• Data loading of each item on user request
• Several options on image generation (SDS)
• Platform Microsoft Windows

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HDF Explorer 1.1

• Reads both HDF5 and 4
• (2 different libs from the app point of view)
• Better data management for large datasets
• What is HDF Inspector ?
• Free downloadable program, shows SDS (datasets)
  as numeric data (grid)

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HDF Explorer 1.1 SDS image options

• Scalar and vector data image generation
• Scalar data
• Discrete map
• Continuous map

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SDS discrete map

• Different grid cell size supported

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SDS vector map (velocity field)

• NOTE Vector in the mathematical sense

• Combine 2 datasets (vector components)

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HDF Explorer 1.1

• Demo

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Things to do nextsome questions

• HDF-EOS
• HDF4 or 5 based ?

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Next on HDF ExplorerHDF-EOS

• Visualizing HDF-EOS data not as direct as
  normal HDF data
• HDF data numeric arrays , images, text.

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HDF-EOS visualization items
Point data we have geolocation, how do we get
the underlying map information ? Possible
solutions provide user input to choose this kind
of data, combine with other data (grid)
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HDF-EOS visualization items

• Swath data
• Combine all the different types of information
  (geolocation fields, dimensions, dimension maps
  and data fields ).How to show this information ?

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HDF-EOS visualization items

• Grid data
• Generate the projection(s)