Version V.2.0.9.7 (20 05 11): Changes made since V.2.0.9.6:

• fixed bug in recently added Zo override option.

Version V.2.0.9.6 (20 05 09): Changes made since V.2.0.9.5:

• added ability to override maximum Zo value (which has been 15cm for edit mode and 1m for run mode).

Version V.2.0.9.5 (19 12 11): Changes made since V.2.0.9.4:

• fixed bug which caused output mass values measured in US tons to be reported at twice the correct value.

• fixed minor bugs in user interface.

• fixed minor bugs in user interface.
• added read-only MO length output to Surface Layer Model for access in all stability modes.

Version V.2.0.8.7 (12 12 31): Changes made since V.2.0.8.6:

• improved calculation of average concentration for non-horizontal line sensors.
• fixed bug that could cause problem when deleting unsaved catalogs.

Version V.2.0.8.6 (11 08 15): Changes made since V.2.0.8.5:

• fixed bug in loading project files introduced in V.2.0.8.5.

Version V.2.0.8.5 (11 07 25):

• fixed bug in surface layer model that blocked sonic L value if initial stability mode was incorrect when sonic added to map.

Version V.2.0.8.4 (10 08 25):

• fixed minor bug with environment form.
• created new installation file compatible with Windows 7.

Version V.2.0.8.3 (09 02 24):

• restored automatic creation of profile object for Ri calculation.

Version V.2.0.8.2 (09 02 22):

• fixed bug that could cause error in Ri calculation in auto-profile mode.
• eliminated automatic creation of profile object for Ri calculation.
• fixed minor bugs in user interface.

Version V.2.0.8.1 (08 04 20):

• fixed minor bugs in user interface.

Version V.2.0.8.0 (08 04 19):

• corrected bug added in V.2.0.7.9 that caused matrix sensitivity to be calculated incorrectly.
• increased number of digits in sensitivity parameter reported; added matrix condition number.

Version V.2.0.7.9 (08 02 26):

• corrected bug that caused last active file to open instead of file double-clicked in File Manager.

Version V.2.0.7.8 (08 01 06):

• added option to speed up models by using pre-calculated values; models are about twice as fast.
• changed default backward LS model catalog mode to "User-selected values".

Version V.2.0.7.7 (07 12 10):

• fixed bug causing compass angle offset to be ignored in calculating minimum touchdown placement region.
• prevented divide-by-zero error when Zo is set larger than concentration sensor height during run.

Version V.2.0.7.6 (07 11 26):

• fixed bug causing divide-by-zero error in sonic calculations for extreme u* and L values.

Version V.2.0.7.5 (07 11 18):

• added binary-to-ASCII converter tool for inspecting touchdown catalogs.

Version V.2.0.7.4 (07 08 30):

• added file storage to Section Plot.

Version V.2.0.7.3 (07 04 11):

• fixed bug that could cause incorrect concentrations upwind of point sources.

Version V.2.0.7.2 (07 03 25):

• fixed bug that could prevent deletion of interrupted touchdown catalogs (bug introduced in 2.0.7.0).

Version V.2.0.7.1 (07 03 13):

• fixed bug that could cause data entered directly into Sonic Anemometer form to be incorrect.

Version V.2.0.7.0 (07 02 27):

• fixed bug that could cause numerical overflow in cases with extreme wind statistics.

Version V.2.0.6.9 (07 02 19):

• fixed minor bugs in user interface.

Version V.2.0.6.8 (06 12 04):

• fixed bug that occasionally caused WindTrax's task priority to be set to low.
• added further information on temperature and pressure to Atmosphere's Query report.

Version V.2.0.6.7 (06 11 23):

• fixed bug that could rarely cause the LS algebra engine to not calculate, although it should.

Version V.2.0.6.6 (06 11 21):

• fixed bug that caused large error in estimated pressure if P sensor elevation was zero.
• fixed bug that prevented load of old project files containing a disconnected Multimeter.
• fixed bug in placement of information panel when projects are moved to different screens.

Version V.2.0.6.5 (06 11 20):

• fixed bug that could cause a crash during profile calculations.

Version V.2.0.6.4 (06 11 13):

• fixed minor bugs in user interface.

Version V.2.0.6.3 (06 11 07):

• fixed minor bugs in user interface.

Version V.2.0.6.2 (06 10 18):

• fixed bug that sometimes prevented the Step Run button from working.

Version V.2.0.6.1 (06 10 10):

• added dialog to preset imported polygon colour and output mode.

Version V.2.0.6 (06 10 05):

• added ability to import multiple polygons from a single file (use '*' to separate each polygon).

Version 2.0.5.9 (06 09 17):

• corrected bug that prevented COM function Cancel() from working reliably.

Version 2.0.5.8 (06 06 12):

• fixed minor bugs in user interface.

Version 2.0.5.7 (06 05 20):

• fixed bug that could (rarely) cause WindTrax to ignore valid TD catalog files.
• removed speed & temperature units controls from sonic anemometer data form - only m/s and C are allowed.
• fixed minor bugs in user interface.

Version 2.0.5.6 (06 04 09):

• added task priority level settings to main menu (Tools/WindTrax Task Priority).
• corrected bugs in COM real-time data server.

Version 2.0.5.5 (06 04 05):

• added file name channel to Data Logger, to set its output file name remotely.
• fixed bugs in COM real-time data server.

Version 2.0.5.4 (06 04 01):

• added Start() function to the COM real-time data server.

Version 2.0.5.3 (06 03 23):

• fixed bug in forward model when concentration sensors are placed very close to the surface.
• fixed several minor bugs in user interface.

Version 2.0.5.2 (06 02 24):

• added option to resize map automatically when large images are imported.
• fixed several minor bugs in user interface.

Version 2.0.5.1 (06 02 19):

• added option to allow correlations instead of raw products as input to Sonic Anemometer.
• added GetCalculationState() function to real-time COM data server.
• fixed several bugs with data file storate when COM server is active.

Version 2.0.4.9 (06 02 13):

• added direct-to-data-file storage of transect and profile plot data.
• fixed several minor bugs in user interface.
• fixed bugs with data files when Real-time COM server is in use.

Version 2.0.4.8 (06 02 07):

• further work on bug which rarely caused a "no disk in drive" error message.

Version 2.0.4.7 (06 02 06):

• added Arc Transect plot, for use in PPG simulations.
• fixed minor bugs with file objects and the user interface.
• worked on bug which rarely caused a "no disk in drive" error message.

Version 2.0.4.6 (06 01 19):

• removed requirement that input data files end in line return.
• fixed minor bug in input data file preview display.

Version 2.0.4.5 (06 01 16):

• fixed minor bug in Input Data File.
• further work on Cerex Data File.

Version 2.0.4.4 (06 01 13):

• fixed minor bug in Input Data File (occurred when files were specified with fewer columns than earlier files.)

Version 2.0.4.3 (06 01 12):

• fixed minor bugs in Information Panel display of sensors and point sources.

Version 2.0.4.2 (06 01 08):

• continued development of Cerex Data File.

Version 2.0.4.1 (06 01 04):

• improved handling of errors in batch mode file runs.

Version 2.0.4 (06 01 01):

• added ability to enter data direct from MultiMeter display.
• added access to Enabled property of sensors and sources via data file connection.
• fixed bug with Enabled property of concentration sensors.
• upgraded Cerex Data File object to accept multiple sensors.

Version 2.0.3 (05 12 25):

• fixed minor bugs in MultiMeter display.
• corrected behaviour of Camera data form.

Version 2.0.2 (05 12 21):

• fixed bug preventing projects from running if input file name is changed!
• fixed bugs that would allow imported polygons to be outside map domain.
• fixed bug in Line Sensor data form.

Version 2.0.1 (05 12 04):

• added options to append to existing output files and allow read-only access to open data files.

Version 2.0 (05 10 25):

• added multiple tracers to all sources and concentration sensors.
• added Sonic Anemometer, Cup Anemometer, and Wind Vane sensors.
• added Cerex Data File for direct input from Cerex sensor system.
• added a Signal Generator to provide various data waveforms for what-if studies.
• added a Chart Recorder to display data in graphical form while the model runs.
• surface layer model parameters can be calculated directly from profiles or sonic anemometer data.
• introduced new user interface with improved access to map tools.
• added a transect plot.
• added individual sensor selection on instrument towers using pointer.
• improved graphics to speed up display in camera image results form.

Version 1.6.0 (06 10 05):

• added ability to import multiple polygons from a single file (use '*' to separate each polygon).

Version 1.5.9 (06 08 27):

• fixed bug that could cause mistimed correction for changes to T and P.

Version 1.5.8 (06 03 23):

• fixed bug with forward model when concentration sensors are placed very close to ground.

Version 1.5.7 (05 10 27):

• added back option to save project as image to Main Menu.

Version 1.5.6 (05 10 25):

• corrected bug in Backward LS model which could (rarely) cause point C sensors not to work.

Version 1.5.5 (05 09 30):

• improved reporting of internal exceptions.

Version 1.5.4 (05 09 15):

• fixed bug that under certain conditions caused given concentrations to be set to zero if in ppmv/ppbv modes.

Version 1.5.3 (05 07 06):

• fixed bug that prevented project files from R 1.5.2.6 from being read!

Version 1.5.2.6 (05 07 05):

• fixed bug which caused lines containing missing data flag to be skipped even if the missing data was unused.
• fixed output format of integer values in output files.
• fixed bug in Input File that could cause problem when bad data is present at end of file.

Revision 1.5.2.5 (05 06 12):

• fixed bug in Imported Image that could cause problems on reloading projects containing them.

Revision 1.5.2.4 (05 06 08):

• fixed bug caused by repeated internal drawn shape names.
• improved Catalog Manager interface.

Revision 1.5.2.3 (05 06 06):

• fixed bug loading files saved with Zoom > 1.
• improved crash handling while deleting imported images.

Revision 1.5.2.1 (05 05 31):

• fixed bug with tape measure tool; it can once again set the map scale.

Revision 1.5.2 (05 05 17):

• fixed bug causing grouped given-mode point sources to produce incorrect concentrations.

Revision 1.5.1.1 (05 04 13):

• fixed bug causing area source area units to be shown incorrectly on data form.

Revision 1.5.1 (05 03 02):

• fixed bug preventing Camera from seeing touchdowns when Point Sources present.

Revision 1.5 (05 03 02):

• added real-time data COM automation server.
• added Text Box object for improved annotation of maps.
• added Properties form to File menu, to display key project data.
• added grouping, variable symbol size, and multiple edit mode to point sources.
• modifed run symbol to provide better visual confirmation of activity.
• data connectors now report Sender and Receiver objects.
• added scrolling via mouse wheel to project map.
• corrected several minor bugs in the interface.
• renamed MO Wind Model to MO Surface Layer Model in preparation for future changes.
• improved response to missing data files and/or directories on project load.

Revision 1.4.5.3 (05 02 15):

• fixed bug which could occur while saving new files.
• added check for Schwartz inequality violation in MO Wind Model.
• improved reporting to log and output files during project run.

Revision 1.4.5.2 (05 02 11):

• fixed problem with Camera images when point sources are present on map.
• allowed camera to display images during step-mode runs.

Revision 1.4.5.1 (04 10 18):

• fixed problem with point source calculations in LS Algebra engine.

Revision 1.4.5 (04 08 23):

• fixed bug in Environment form on change of default Zo.
• increased minimum Zo from 10 cm to 15 cm.
• fixed bug in catalog generator; more remain.

Revision 1.4.4 (04 06 20):

• fixed bug in area source hint labels after recolouring.

Revision 1.4.3 (04 06 02):

• revised hint labels.
• changed output label in Point Source form.
• allowed more digits in sensor input form data.

Revision 1.4.2 (04 03 29):

• fixed problems with Object List.

Revision 1.4.1 (04 03 03):

• fixed problem with forward LS model: collection volumes could be incorrect if made larger than 1.0 m in height.
• fixed bug with MultiMeter in showing (given) Line Concentration Sensor concentration.
• fixed bug which prevented renaming of Line Concentration Sensors.
• corrected bug when resizing Contour Plot output form.
• fixed potential problem with minimum horizontal tracking in Backward LS model.

Revision 1.4 (04 02 01):

• fixed problem with mixed-output-mode sources causing all sources to read zero Q.
• increased maximum number of visible input file columns in file viewer to 256.
• fixed bug with map surface colour painting.
• Paint Can tool now shows Refuse unless cursor is over a paintable shape.
• simplified the process of installing patches and saving older file Versions.
• added this form to report changes since last revision.