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HDF Explorer

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HDF Explorer is a data visualization program that reads Hierarchical Data Format files (HDF, HDF-EOS and HDF5) and also netCDF data files. HDF Explorer offers a simple yet powerful interface for the …

HDF Explorer is a data visualization program that reads Hierarchical Data Format files (HDF, HDF-EOS and HDF5) and also netCDF data files. HDF Explorer offers a simple yet powerful interface for the visualization of HDF data. The data is just a click of the mouse away. Data is first viewed in a tree-like interface, and then optionally loaded and visualized in a variety of ways.

HDF Explorer features include fast access to data, grid, scalar and vector views. It also allows exporting your data either as a ASCII text file or a bitmap image.

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Transcript

  • 1. HDF Explorer HDF-EOS Workshop IX San Francisco, CA November 30 - December 2, 2005 Pedro Vicente Nunes Space Research Software Inc. Urbana, IL HDF
  • 2. HDF Explorer • Version 1.4 just released • New features: support for HDF5 Dimension Scales -2- HDF
  • 3. Dimension Scales : HDF5 API C code • Example: I have an array of 12 elements organized in a 3 X 4 matrix -3- HDF
  • 4. Dimension Scales : HDF5 API C code • But the spatial phenomenon I am trying to model has different width and height definitions X Y -4- HDF
  • 5. Dimension Scales : HDF5 API C code My array data of 12 elements: int dset_data[12] = {1,2,3,4,5,6,7,8,9,10,11,12}; My X axis spatial domain: int X[4] = {10,20,50,100}; My Y axis spatial domain: int Y[3] = {10,20,30}; -5- HDF
  • 6. Dimension Scales : HDF5 API C code Save my arrays as HDF5 datasets with the High Level HDF5 API function H5LTmake_dataset_int (fid,“My data",rank,dims, dset_data); -6- HDF
  • 7. Dimension Scales : HDF5 API C code for the X and Y arrays H5LTmake_dataset_int (fid,“X axis",rankx,dimsx, X); H5LTmake_dataset_int (fid,“Y axis",ranky,dimsy, Y); -7- HDF
  • 8. Dimension Scales : HDF5 API Call H5DSattach_scale function /* get the DS dataset id and dataset*/ did = H5Dopen(fid,” My data”); dsid = H5Dopen(fid,” X axis”); /* attach the “ X axis” dimension scale to “My data" at dimension 0 */ H5DSattach_scale(did,dsid,DIM0); -8- HDF
  • 9. Dimension Scales : HDF5 API Call H5DSattach_scale function /* get the DS dataset id and dataset*/ did = H5Dopen(fid,” My data”); dsid = H5Dopen(fid,” X axis”); /* attach the “ X axis” dimension scale to “My data" at dimension 0 */ H5DSattach_scale(did,dsid,DIM0); -9- HDF
  • 10. HDF Explorer: Tree View - 10 - HDF
  • 11. HDF Explorer: Grid View - 11 - HDF
  • 12. HDF Explorer: Map View - 12 - HDF