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-<!DOCTYPE doctype PUBLIC "-//w3c//dtd html 4.0 transitional//en">
-<html>
- <head>
- <meta http-equiv="Content-Type" content="text/html;
- charset=windows-1252">
- <meta name="GENERATOR" content="Mozilla/4.76 [en] (X11; U; SunOS 5.8
- sun4u) [Netscape]">
- <title>DS9 New Features</title>
- </head>
- <body vlink="#551a8b" text="#000000" link="#0000ee" bgcolor="#ffffff"
- alink="#ff0000">
- <h3> <img alt="" src="sun.gif" width="100" height="98"
- align="middle"> SAOImageDS9 Version 7 New Features</h3>
- <blockquote>
- <p><b><b><b>Version 7.3<br>
- </b></b></b></p>
- <blockquote>
- <p><b><b><b>64 bit Applications</b></b></b><br>
- </p>
- <p>DS9 now fully supports 64 bit applications across all
- platforms. New support for 64 bit MacOSX Aqua has been added,
- along with 64 bit Windows Cygwin.</p>
- <p><b><b><b>2D Plots</b></b></b></p>
- </blockquote>
- <blockquote>New and improved GUI<br>
- Support for data set legend<br>
- Improvements in rendering<br>
- Error bar caps are now supported</blockquote>
- <blockquote>
- <p><b><b><b>Mouse Mode</b></b></b></p>
- <p>The default mouse mode is now <b><tt>NONE</tt></b> and not <b><tt>REGION</tt></b>
- or <b><tt>POINTER</tt></b>. This prevents unwanted region
- creation went bringing the DS9 window to the front in most
- Window managers.</p>
- <p><b><b><b>Other Enhancements</b></b></b></p>
- </blockquote>
- <blockquote>Improved rendering of rotated text<br>
- Support for ENVI data format<br>
- 3D Image caching<br>
- 3D Background Image rendering<br>
- Dramatic improvements in analysis speed of large 3D data sets<br>
- New Segment region</blockquote>
- </blockquote>
- <blockquote>
- <p><b><b>Version 7.2<br>
- </b></b></p>
- <blockquote>
- <p><b>FITS</b></p>
- </blockquote>
- <blockquote>
- <p>DS9 now fully supports complex FITS images such as data
- cubes, multiple extension data cubes, mosaics, RGB images, and
- 3D images. In addition, DS9 can be use to create complex FITS
- images from multiple FITS files and other image formats.
- Furthermore, complex FITS images can be easily disassembled
- into individual images and saved in FITS or other image
- formats.</p>
- </blockquote>
- <blockquote>
- <p><b>Common API</b></p>
- </blockquote>
- <blockquote>
- <p>XPA and SAMP now share the same API as the command line
- interface. Backward compatibility is maintained to previous
- versions of DS9.</p>
- </blockquote>
- <blockquote>
- <p><b>Other Enhancements</b></p>
- </blockquote>
- <blockquote>More robust handling of SEGV and SIGBUS events<br>
- DS9 now distinguishes between BLANK/NAN/INF values<br>
- <b>saveimage</b> now supports EPS<br>
- Support for NRRD (Nearly RAW Raster Data) data format<br>
- Added support for exporting RGB images in TIFF, JPEG, or PNG<br>
- Improvement for FITS compression support<br>
- Released under GPL v3<br>
- </blockquote>
- <b><b> </b></b>
- <p><b>Version 7.1<br>
- </b></p>
- <blockquote>
- <p><b>Catalog Matching</b><br>
- </p>
- <p> DS9 now supports catalog matching. From the Catalog menu
- option, the user selects two currently loaded catalogs, an
- error radius, and matching function. The user may request all
- sources that are present in both catalogs, or in one catalog
- and not in the other. Each catalog need not to be specified in
- the same world coordinate system.<br>
- </p>
- <p><b>Enhanced Plot Tool</b><br>
- </p>
- <p> In addition to a Line Plot Tool, DS9 now supports additional
- Bar and Scatter Plots Tools. The GUI for the Plot Tools have
- been enhanced and new features have been added including
- statistics and data lists. Each Plot Tool supports multiple
- data sets and custom plotting options.</p>
- <p><b>Catalog Scatter Plots</b><br>
- </p>
- <p>The user may now plot the results of two columns of a loaded
- catalog as a scatter plot. A selected region on the image will
- highlight the corresponding row and plot point. Likewise, a
- selected row or plot point will highlight the corresponding
- image region.<br>
- </p>
- <p><b>Interactive Region Analysis</b><br>
- </p>
- <p> DS9 regions now support interactive region analysis. The
- analysis tasks are enabled by selecting the Analysis Menu in a
- region's dialog box. Interactive analysis tasks includes
- statistics, data cuts in 2D and 3D, and radial profiles.<br>
- </p>
- <p><b>Other Enhancements</b><br>
- </p>
- </blockquote>
- <blockquote>3D scaling along the z axis of data cubes<br>
- Lock/Match Smoothing option<br>
- WCS dialog support for non-linear projections such as TAN-SIP
- and SCAMP<br>
- Support for FITS files larger than 2Gb has been improved<br>
- </blockquote>
- </blockquote>
- <blockquote>
- <p><b>Version 7.0<br>
- </b></p>
- <blockquote>
- <p><b>3-D Data Visualization</b><br>
- </p>
- <p> Previous versions of DS9 would allow users to load 3-D data
- into traditional 2-D frames, and would allow users to step
- through successive z-dimension pixel slices of the data cube.
- To visualize 3-D data in DS9 v. 7.0, a new module, encompassed
- by the new <tt>Frame 3D</tt> option, allows users to load and
- view data cubes in multiple dimensions.</p>
- <p>The new module implements a simple ray-trace algorithm. For
- each pixel on the screen, a ray is projected back into the
- view volume, based on the current viewing parameters,
- returning a data value if the ray intersects the FITS data
- cube. To determine the value returned, there are 2 methods
- available, Maximum Intensity Projection (MIP) and Average
- Intensity Projection (AIP). MIP returns the maximum value
- encountered, AIP returns an average of all values encountered.
- At this point, normal DS9 operations are applied, such as
- scaling, clipping and applying a color map.<br>
- </p>
- <p>Rendering time is independent of the actual data cube size.
- Instead, the time it takes to render is based on how many rays
- are needed to project the data cube upon the screen in the
- view volume and the current zoom factor. The new module
- requires no special hardware or graphical processor unit (GPU)
- and the rendering time is adequate for interactive GUI
- manipulation on most computers. The rendering engine is
- developed using the POSIX thread library, allowing multiple
- light weight processes to be spawned to complete an image in
- parallel. The number of threads actually generated is a user
- specified parameter. Since all modern hardware contain
- multiple CPU cores, the default value is 8 threads. For larger
- work stations, this number can be increase. For every doubling
- in the number of CPU cores available, rendering times decrease
- approximately 75%.<br>
- </p>
- <p>The new module is support on all hardware platforms currently
- supported by DS9, including 32-bit and 64-bit versions of
- Linux and MacOSX, and 32-bit versions of Windows and Solaris.<br>
- </p>
- <p>All 2-D graphics, regions, cross hairs, contours, and
- coordinate grids, are applied to the current slice, which is
- selected by the user. When the user wishes to match or lock a
- 2-D image and to a 3-D data cube, the current slice is used to
- determine the rendering solution. The user can crop the data
- cube for all 3 axes via the command line or the GUI. The new
- module also supports FITS event files binned into a data cube.<br>
- </p>
- <p>All printing support has been extended to the new 3-D module.
- The user may generate 3-D images in Postscript, JPEG, TIFF,
- and other formats, just as in the 2-D case. Furthermore,
- native printing is supported for the Windows version.<br>
- </p>
- <p>DS9 analysis macros have been enhanced to fully support the
- new 3-D module, allowing the user to invoke external analysis
- tasks based on the current view parameters and to return
- results back into DS9 in the form of text, plot, 2-D image, or
- 3-D image.<br>
- </p>
- <p>Funding for 3-D data visualization was provided by the JWST
- Mission office at Space Telescope Science Institute
- (NAS-03127) </p>
- <p><b>Color Tags</b><br>
- </p>
- The purpose of color tags are to highlight (or hide) certain
- values of data, regardless of the color map selected. The user
- creates, edits, and deletes color tags via the GUI. To create a
- color tag, enter the Colorbar Mode, and click once on the
- colorbar. This creates a default color tag. Click and drag to
- change the values. Click and drag on one side to increase or
- decrease the value. Double click to manually edit the values and
- color. Place the cursor over the color tag and press the delete
- key to delete it. From the color parameters dialog, the user can
- load, save, and delete all color tags for that frame.<br>
- <p><b>Regions<br>
- </b></p>
- Regions now support analysis tasks unique to each region type.
- In the menu of the region dialog, the <tt>Analysis</tt> menu
- will contain any type specific analysis tasks. The <tt>Circle</tt>,
- <tt>Ellipse</tt>, <tt>Box</tt>, <tt>Polygon</tt>, and <tt>Point</tt>
- regions now support interactive 1-D cuts along the 3rd axis of
- 3-D data cubes. The <tt>Line</tt>, <tt>Vector</tt>, and <tt>Projection</tt>
- regions support 2-D cuts through the current slice of 2-D and
- 3-D data. The <tt>Auto Plot</tt> option under the regions
- preferences can be used to specify if a plot is automatically
- generated when the region is created.<br>
- <p><b>Analysis<br>
- </b></p>
- DS9 analysis macros have been enhanced to fully support the new
- 3-D module, allowing the user to invoke external analysis tasks
- on the current slice of 3-D data cube. The macro <tt>$z</tt> is
- now supported for 3-D data. In support of <tt>Funtools</tt>,
- the <tt>PLANE</tt> keyword is supported.<br>
- <p><b>Slice</b><br>
- </p>
- DS9 now allows the user to load a 3-D data cube one slice at a
- time via the GUI or from the command line. Use the option <tt>-slice
-
-
-
-
-
-
-
- </tt>to specify that all following 2-D files are to be
- interpreted as a slice of a 3-D data cube.<br>
- <p><b>Photo</b><br>
- </p>
- DS9 can now load images in TIFF, JPEG, and PNG file format
- directly. When loaded into a <tt>Frame</tt>, the average of the
- luminosity is used. When loaded into a <tt>Frame RGB</tt>, each
- channel is loaded directly. Use the <tt>-photo</tt> command
- line option to specify that all following files are to be
- interpreted as a photo image.<br>
- <p><b>Export</b><br>
- </p>
- DS9 will export the current image in TIFF, JPEG, or PNG file
- format with the current colorbar parameters applied. The entire
- image is exported (not just the visible portion) at the native
- resolution.<br>
- <p><b>Lock/Match</b><br>
- </p>
- The support for the Lock/Match functionality of DS9 has been
- greatly enhanced. The user may choose to lock/match frames, the
- cross hair, cropping, the current slice, binning parameters,
- scale parameters, or color map parameters.<br>
- <p><b>Crop<br>
- </b></p>
- DS9 now supports cropping the current image, via the GUI,
- command line, or XPA/SAMP in both 2-D and 3-D. The user may
- specify a rectangular region of the image data as a center and
- width/height in any coordinate system via the Crop Dialog, or
- can interactively select the region of the image to display by
- clicking and dragging while in Crop Mode. For 3-D frames, the <i>shift-click</i>
- to change the front clip plane, and <i>control-click</i> to
- change the back clip plane. From the command line, cropping
- parameters can be specified in IRAF format.<br>
- <p><b>ASINH Scale<br>
- </b></p>
- A new scale function has been added, <tt>ashinh</tt>, based on
- the arc sinh function. This new function has similar properties
- as the <tt>log</tt> function, with <tt>a=10</tt>.<br>
- <p><b>All new GUI<br>
- </b></p>
- <p>DS9 now supports basic GUI elements (buttons, menus, etc) via
- the native window manager API. Each port of DS9 will have a
- native look and feel of each hardware platform. DS9 will take
- advantage of the current user selected <i>Theme </i>if
- supported by the native windowing system.<br>
- </p>
- <p><b>Postscript</b><b><br>
- </b></p>
- DS9 now generates identical postscript code for a particular
- image, regardless of which hardware platform was used to
- generate the image.<br>
- <p><b>Catalogs</b><b><br>
- </b></p>
- The user may now specify coordinates in any equatorial system
- (not just FK5) for a catalog search and receive results in any
- equatorial system, to be plotted or saved. Local catalogs in any
- equatorial system are now supported.<br>
- <p><b>New WCS support</b><br>
- </p>
- <p>New WCS support for non-FITS WCS projections have been added
- to DS9: TNX, ZPX, SCAMP, SIP and HEALPIX.&nbsp; The keyword
- WCSDEP is now supported.<br>
- </p>
- <p>Enhancements and improvements have been made in the support
- for the following FITS WCS projections: COD, COO, COE, COP,
- ZEA, and CAR.<br>
- </p>
- <p>DS9 now supports non-equatorial long/lat coordinate systems
- in the form of xLON/xLAT and xyLN/xyLT. This includes solar
- WCS HPLN/HPLT, HGLN/HGLT, and HRLN/HRLT systems.<br>
- </p>
- <p>DS9 now fully supports multiple alternative celestial WCS, if
- specified. All cut/paste/copy operations, catalog, image
- server, contour, regions, and coordinate grids will now use
- the default WCS as selected by the user, via the WCS menu
- item.<br>
- </p>
- <p><b>HEALPIX</b><br>
- </p>
- <p>DS9 now supports native HEALPIX maps, in both FITS binary
- table and ascii table form. Any table with keyword
- PIXTYPE=HEALPIX or NSIDE=x will be processed as an HEALPIX
- image. The user may specify HEALPIX parameters within the file
- specification to indicate RING (default) or NESTED order,
- Coordinate System (default is Unknown),&nbsp; Quadrant
- (default is first), and Equator (default), North, or South
- layout. The appropriate WCS is generated for the image.<br>
- </p>
- <p><b>External Analysis</b><b> Files<br>
- </b></p>
- DS9 will now look for external analysis files in the following
- locations at start up: the current directory, <tt>$HOME/bin,
- /usr/local/bin</tt>, <tt>/opt/local/bin,</tt> and <tt>/soft/saord/bin</tt>
- in the form of <tt>*.ds9</tt>. If found, they will be
- automatically loaded. Users may disable this feature via the
- presences analysis panel. DS9 will continue to load <tt>ds9.ans</tt>
- and <tt>ds9.analysis</tt> if found, and users specified
- analysis files as before. DS9 will verify that the same analysis
- file is not loaded twice to avoid duplication of analysis menus.
- </blockquote>
- <p><b> For more detailed information, Please see <a
- href="release/r7.0.html">Release Notes</a></b></p>
- </blockquote>
- </body>
-</html>