Published on February 19, 2014
Intel Array Visualizer HDF Workshop VIII October 27, 2004 John Readey email@example.com R ® Intel Compiler Lab – Page 1
Introduction • Intel® Array Visualizer is a software tool for data visualization • Includes – – – – – – Array Viewer*: Viewing application Library routines: API for C and Fortran applications Object Model: COM* based class library ActiveX* Controls: Re-usable UI components Pluggable UI Pluggable File Format support • Array Viewer is available as a free download • Other components (for application development) included with Intel® Fortran and Intel® C++ (v9.0) R ® Intel Compiler Lab – Page 2
Array Viewer R ® Intel Compiler Lab – Page 3
Array Viewer - Features • Data visualization program for viewing HDF4, HDF5, and NetCDF files – Also supports XML, FITS, WAVE, PLY, BMP, GIF, JPG, PNG – Incremental Load/Save (for HDF4, HDF5) • • • • Browser-like interface Internet Explorer plug-in Macro support, UI templates Data Grid for displaying Datasets, Attributes R ® Intel Compiler Lab – Page 4
Array Viewer as an IE Plug-in R ® Intel Compiler Lab – Page 5
Array Viewer – Tree Pane • Groups, Datasets, Attributes, and Links displayed as icons in a tree control • Clicking on icon displays object in right pane • Graphs and Pages also displayed in the tree – Graph: a collection of plots, axes, and captions – Page: HTML/script code • Copy/Paste, Drag&Drop supported R ® Intel Compiler Lab – Page 6
Viewer Visualization Features • Variety of 2D/3D plot types: Image, XY, Contour, Heightmap, Vector, Log plots R ® Intel Compiler Lab – Page 7
Viewer Visualization Features - Cont • Images can be indexed or True Color • Color mapping functionality based on HDF5 Image and Palette Specification • Multiple Images can be composited R ® Intel Compiler Lab – Page 8
Viewer Visualization Features - Cont • Wizards provided for the creation of new plots R ® Intel Compiler Lab – Page 9
Viewer Visualization Features - Cont • Property pages enable plot appearance to be modified R ® Intel Compiler Lab – Page 10
Viewer Visualization Features - Cont • Graphs are collections of plots, axes, and captions • Data for plots or axes is referenced as a path to a dataset • Paths can contain suffix to indicate section and/or sub-type R ® Intel Compiler Lab – Page 11
Viewer – Page Objects • Page objects are HTML code that can contain: – – – – Standard HTML elements Graph and grid objects UI elements (buttons, text entry, checkboxes, etc) Script code for dynamic behavior • Used to: – Group related datasets, graphs, explanatory text in one view – Created interactive views • Page data is saved to the file along with other elements (in HDF4/HDF5 as a group attribute) R ® Intel Compiler Lab – Page 12
Viewer – Page Example 1 R ® Intel Compiler Lab – Page 13
Viewer – Page Example 2 R ® Intel Compiler Lab – Page 14
Library Routines • Provides means for C/Fortran programs to read and write data to a file (HDF4, HDF5, or XML) – Program model is the same regardless of file format • Only avOpen, avSave calls access files directly • Other File I/O is implicit • For HDF4, HDF5 files: – Datasets, Groups loaded from file as they are accessed – avSave writes modified objects back to file • For XML files: – All objects are loaded on avOpen – avSave rewrites the entire file – Loops are replaced by links R ® Intel Compiler Lab – Page 15
Library Routines - Cont • File read example in C: R ® Intel Compiler Lab – Page 16
Library Routines - Cont • File save example in Fortran: R ® Intel Compiler Lab – Page 17
Library Routines - Cont • avNewViewer function can be used to invoke the Array Viewer • Viewer example in Fortran: R ® Intel Compiler Lab – Page 18
Object Model • COM based class library • 40+ classes representing datasets, dataspaces, types, groups, links, graphs, plots, etc. • Provides more fine-grained control than C/Fortran lib (but not direct file access) • Organized in hierarchy: – Class properties link to sub-objects • Example: mydataset.Dataspace – Collection classes contain an arbitrary number of objects of a given type • Example: mygroup.Groups[“mysubgroup”] R ® Intel Compiler Lab – Page 19
Object Model Diagram R ® Intel Compiler Lab – Page 20
List Datasets Example – C++ R ® Intel Compiler Lab – Page 22
List Datasets Example – C# R ® Intel Compiler Lab – Page 23
Reading Compound Elements • For datasets of compound types ReadElement() returns an object • Properties of the object are the fields of the type • Fields that have an extent > 1 become indexed properties • Fields that are themselves compound types become sub-objects of the returned object R ® Intel Compiler Lab – Page 26
ActiveX Controls • User Interface components that can be used to create GUI applications • Controls supported in Visual C++*, Visual Basic*, Compaq Visual Fortran* • Graph, Grid, Tree controls supply most of the functionality in Array Viewer • Each control has a limited number of properties – Most state is accessed through object model • Events signal changes of state R ® Intel Compiler Lab – Page 28
ActiveX* Control Example R ® Intel Compiler Lab – Page 29
File Loaders • Each file format supported by Array Visualizer is implemented by a separate file loader component • File loaders run in their own address space • Additional file formats can be supported by registering a new file loader on the system • No source changes, re-linking required for applications • New file loaders can be created by AV users Must be written in C++ (VS.Net Wizard provided) R ® Intel Compiler Lab – Page 30
Getting the Software • Free Viewer download – available soon • Development version – http://www.intel.com/software/products – Order or download Intel Fortran for Windows v8.1 – Free evaluation available • Post questions or comments on Fortran forum – http://softwareforums.intel.com/ids/board?board.id=5 • Let us know what features you’d like to see in future versions R ® Intel Compiler Lab – Page 31
Legal Addendum • * Other names and brands may be claimed as the property of • others Copyright Intel© Corporation 2004 R ® Intel Compiler Lab – Page 32
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