LandSerf 2.2: Changes Since 2.1

New Functionality

• Improved USGS import can now read 1 degree (3 arc-second resolution) DEMs in addition to 7.5 minute resolution.
• Improved robustness of NTF vector reader. Now reads Ordnance Survey Profile contour files in addition to other NTF data.
• Can now read terragen .ter files and improved terragen export that clips/pads to the nearest 2^n+1 pixels.
• Can now read GTOPO30 files without need for manual conversion.
• Can now read SRTM30Plus files (1km resolution global DEM and bathymetry).
• Fractal dimension and log-log variogram added to statistical summary.
• Shapefile import now reads full set of attributes, not just IDs. Improved handling of shapefiles with large numbers of parts in single line/polygon.
• TIFF import can now read in a much wider range of files including PackBits compressed images, GeoTIFFs, little-endian images.
• Process intensive operations can now be paused or cancelled by clicking on the progress bar. TIN creation can saved when partially completed.
• Interactive query of vector objects now graphically highlights selected vector.
• The surface profile tool can now display profiles along an interactively selected vector object.
• Projection information now transferred to new spatial objects when combining primary and secondary objects that use the same projection.
• Vector digitizing now has an 'auto increment' facility making it easier to add a sequence of points. Improved visual feedback while digitizing.
• New vertical exaggeration option added to shaded relief calculation (useful for low relief surfaces).
• Image output now creates an image of entire selected spatial objects at full resolution, not just a 'screen dump' of current zoomed view.
• MacOSX version can now use native 'Aqua' look and feel.
• Improved flexibility in creating text attributes from the attribute table window.
• Numerous minor improvements in the GUI

Bug Fixes

• Improved efficiency of vector display and remove flicker when overlaying vector on raster in 3d viewer. New vector depth options in 3d viewer.
• 3d viewer now correctly calculates surface height at triangle vertices.
• Reprojection now correctly transforms from UTM to lat/long in the southern hemisphere.
• Reprojection of rasters now provide better estimate of new corner coordinates for trapezoidal reprojections.
• Summary statistics now deal more elegantly with a out of memory error (only affects large rasters with high precision variation).
• Improved reliability of vector clipping (subset) for lines that intersect with clipping area.
• Removed bug where editing rasters and vectors can create duplicate 'hidden' copies of original unedited spatial objects. Edited object now moved to end of thumbnail list.
• Graph axes now use better selection of rounded labels.
• .srf and .vec files formats are no longer dependent on Java version.
• Removed bug whereby creating new vector without attribute table caused a null pointer exception if vector display set to display labels.
• Removed 99 cell maximum window size for multi-scale query. Corrected bug that generated error when performing multi-scale query of rasters with irregular null values.
• Removed bug that sometimes prevented point density calculation from being selected from menu.
• Help files now display in browser on MacOSX and Linux.
• Keyboard shortcuts on MacOSX now accessible via standard command key.
• Removed bug where some floating point numbers displayed with minor precision rounding errors in attribute table window.
• Numerous other minor bug fixes and improvements in error reporting.

API Changes/Enhancements (for Programmers)

• Added simple .prj (projection file) reading method to BinRasterIO.
• Added linear trendline option to scatterplot display API.
• Updated JWPriorityQueue to sort elements (if possible) as well as by priority.
• Added a dBase II reader to the utils package (useful for shapefile import).
• Exposed collection of rasters/vectors stored in a GISFrame via new interface methods getRasterMaps() / getVectorMaps() (allows non-primary/secondary spatial objects to be retrieved).
• Updated API documentation to make the use of LSThread classes clearer.
• Added accessor methods for spatial objects created in processing classes without the need to retrieve via a GISFrame.
• Modified LSThread so that if doProcessing() is called directly (ie not through the threaded run() method), messages are still displayed to standard error output.
• Updated SimpleGISFrame to expose collection of all objects added to frame.
• Updated GUIFrame to ensure that setRaster / setVectorMap methods set object to one not already added, it is added to the collection.
• Added methods for non-recursive search of XML DOMs in the utils package.
• checkStoppedThread() added to LSThread to allow processes to be interrupted cleanly.
• Improved parsing of HTML/XHTML by ImprovedHTMLKit in the utils package. Now parses XHTML tags and can produce an error log of problems with validation.
• Added makeTippedTextField() to the ComponentFactory to allow the contents of text fields to be displayed in their own tooltip.
• Changed AttributeTable from inheriting the Swing class AbstractTableModel to composing it. Made the composed object transient so that changes in Java version do not compromise serialization.
• 3d viewer now uses Jogl 1.1 b10 with improved stability for ATI graphics cards.
• Numerous minor improvements to API documentation.

Earlier Changes

• Changes from 2.0 to 2.1
• Changes from 1.8 to 2.0
• Changes prior to 1.8