hdf explorer update and demo
DESCRIPTION
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. HDF Explorer supports HDF5 dimension scales.TRANSCRIPT
04/12/23 HDF and HDF-EOS Workshop XI, Landover, MD 1
HDF and HDF-EOS Workshop XI, Landover, MD
November 6 – November 8, 2007
Pedro Vicente Nunes
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Space Research Software
http://www.space-research.org/
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Introduction
•What is HDF Explorer ?•HDF, HDF5 and netCDF data reader, visualization tool
•Summary of presentation•Several Image options with the discrete Map view, Continuous Map view and Vector View
•HDF5 Dimension Scales features
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Access data
1) Browse object tree
1) Right-click on objects to get menu
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Grid View
•An Excel like grid with each cell an element datum
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Discrete Map View
• Data is visualized as a map of colors. The colors are associated with a discrete range of values.
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Map options
• In the Draw options dialog box the user can choose to draw the color of each cell and to draw a grid surrounding each cell.
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Map options
• Now the grid is drawn
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Fill options
•Ignore or not a fill value in the making of the map, that is, the fill value is not translated to a color. The user also has an option to draw the fill value border in the grid.
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Fill options
•A map with the fill values not translated to a color
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Dimension options
•Choose to visualize or not the dataset dimensions (values in legend) in the map
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Axis options
•Options to draw space dimensions information (north, south, east, west, distance between ticks)
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Size options
•Change the size of the image
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Legend options
•Change the values of the legend discrete intervals
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HDF5 Dimension scales (H5DS)
•Allows choosing of one of several Dimension Scales datasets to be shown either in grid or map view
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HDF5 Dimension scales
•Click over each one of the dimension scales to select it. All available dimension scales are shown for each dimension
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One map with a set of H5DSs
•1 - 2.2
2.2 - 3.4
3.4 - 4.7
4.7 - 5.9
5.9 - 7.1
7.1 - 8.3
8.3 - 9.6
9.6 - 11
11 - 12
1030
1030
100 300
100 300
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Another set of H5DSs on the same dataset
•1 - 2.2
2.2 - 3.4
3.4 - 4.7
4.7 - 5.9
5.9 - 7.1
7.1 - 8.3
8.3 - 9.6
9.6 - 11
11 - 12
10
100
300
10
100
300
100 200 300 400
100 200 300 400