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Release History

The table below lists the improvements and bug fixes of the last DataLab versions. The latest release can be loaded from the download page.
 
Release 2.599 [2008-Mar-15]

New Features

  • col/row name generator
  • frequency tables and percentiles

Improvements

  • many minor improvements and adjustments
  • MLR allows for empty data cells
  • correlation table now offers a way to copy its contents into the matrix clipboard
  • FFT user interface improved
  • the histogram chart allows to setup the bin boundaries exactly (in addition to the automatic display)
  • histogram now shows optional normal distribution
  • quartiles now deliver more appropriate values if data sample is of very small size
  • numeric editor now allows to toggle "empty" state of data cells

Bug Fixes

  • opening an XLS or CSV file when Excel has opened it does no longer generate a general access violation
  • context menu of univariate statistics allowed changes of the data matrix
  • correlation function calculates now correct results (value were slightly off)
  • inactive marks are now displayed correctly
  • histogram of matrix rows did not include all cells of a row if the matrix contained more columns than rows
  • Gauss function does no longer crash if used in expressions

 

Release 2.598 [2008-Feb-11]

New Features

  • multi-segment curve digitizer implemented
  • empty cells in data matrix are now supported

Improvements

  • formula interpreter now understands "sign" function
  • XLS import improved: import row and columns headers can be imported now; formulas are converted to numbers (if possible); non-numeric cells are now imported as empty cells (instead of zero values)
  • help file improved
  • the delimiter of CSV files can now be set in the general operating parameters
  • number significant export digits and placeholder for indefinite values are now stored in registry
  • variable and object selector windows now allow the selection of ranges in the matrix view
  • 1-sample t-test is now performed for both groups (A and B) separately
  • popup menus improved
  • German translation of protocol for outlier tests

Bug Fixes

  • printing a protocol as PDF does no longer crash the program
  • entering a comment on the data matrix does no longer create a range check error

 

Release 2.593 [2008-Jan-30]

New Features

  • sorting of row and column names implemented
  • PCA: details of protocol can now be exported as CSV file
  • script language extended by a few commands: Initialize, Math, Summary

Improvements

  • evaluation copy now allows to activate license during startup of program
  • cluster analysis now provides for scaling of data
  • Dean-Dixon outlier test improved (better result page)
  • dendrogram now offers to set the orientation of the diagram and the scaling of the data
  • IDT files have new format in order to include cell states
  • IDT files have now less volume
  • editor of row and column names improved
  • distribution calculator improved
  • PCA: protocol now shows variable and object names
  • matrix clipboard improved

Bug Fixes

  • various minor bug fixes
  • printing to a PDF now works as expected (Adobe engine crashed due to missing title)
  • t-Test for paired samples did not work correctly if marked samples were arranged in rows
  • math formulas now process unary minus and plus signs correctly
  • PCA of all-zero matrices does not crash DataLab anymore
  • zoom window in dendrogram now works as expected

 

Release 2.590 [2008-Jan-22]

New Features

  • Fourier transformation (FFT) implemented
  • Linear Discriminant Analysis (LDA) implemented
  • syntax of range definition in mathematical formulas changed ('..' is replaced by ':')
  • signal integration implemented
  • loading/saving CSV files (comma separated files) implemented
  • loading of XLS files (MicroSoft™ Excel™) implemented
  • random number generator implemented
  • test for significance of correlation implemented

Improvements

  • DataLab now remembers the current data file when exiting and reloads it during start-up
  • c2-test: critical values are now both listed for c(alpha) and and c(1-alpha)
  • protocol of statistical tests now also show boxplots of tested data (when appropriate)
  • Kurtosis and Skewness are now calculated using the unbiased estimation
  • correlation table now allows to mark extreme values (both negative and positive) and significant values in different colors
  • linear regression now indicates the ideal distribution of residuals and allows to set the confidence level for estimated values
  • univariate statistics are now calculated for marked data A and B (logical AND of A and B)
  • matrix view now has a delete button
  • script engine improved and unified

Bug Fixes

  • logarithmic display does no longer crash under certain circumstances (when AutoZoom is on)
  • some popup menus and messages are now translated to German (in the German version)
  • DataLab crashed when extracting data from the clipboard and the clipboard did not contain a single number
  • data marking dialog: marking values above/below threshold works now as expected
  • extraordinary ressource consumption fixed when eyedropper in plot window is down

 

Release < 2.590
Release history of versions before 2008 has been deleted for brevity