LabPlot

New features:

• [worksheet]
• Bar plots
• Plot templates - allow to save and re-use custom plot configurations
• Histogram
• Error bars (Possion sqrt(N) error or values from custom columns)
• Rug plots
• Box Plot
• Rug plots
• Symbols for whisker end points
• Allow to modify box properties (color, etc.) for every data set independently of each other
• Draw a legend item for every dataset in the box plot
• Reference Range - custom area on the plot to highlight a certain x- or y-range
• Show LaTeX error messages in text labels when rendering with LaTeX
• [spreadsheet]
• Use a different icon for calculated columns, also show the definition of the formula and parameters in the tooltip text in the project explorer
• Heatmap formatting for categorical data in text columns
• When generating random numbers, allow to specify the seed number
• Column statistics for text columns including the frequency table, bar and Pareto plots
• Column statistics for selected cells only
• Dropping and masking of values also for text and datetime columns
• Data sampling (random and periodic methods)
• Data 'flattening' - convert pivoted data to column base format
• Column statistics (size, mean, stddev, etc.) are available in the function dialog
• Function values dialog supports accessing arbitrary cells of columns with cell(f(index), g(column,..)) and other moving functions
• Allow to subtract and add a value by providing a difference between two values
• Allow to subtract a baseline
• [matrix]
• Zooming in the image view
• [import]
• Import data from Excel .xlsx files using QXlsx library
• Import of Binary Log File (BLF) files from Vektor Informatik
• HDF5: support VLEN data import
• Live data: support multiple values via TCP
• [export]
• Export spreadsheet and matrix in Excel .xlsx format using QXlsx library
• Use the current working project directory, if available, as the default export path
• [analysis]
• Maximum likelihood estimation for several distributions
• Guess start values of fit parameter for polynomial models by linear regression
• Implement fourier filtering for datetimes
• [general]
• Allow to create a spreadsheet with the data steming from an equation curve, an analysis curve, a histogram or a box plot
• Add settings option for GUM compliant terms

Performance improvements:

• Reduce the memory consumption during the spreadsheet export to Sqlite
• Reduce the memory consumption when importing from a database table into the spreadsheet
• Faster import of files with a big number of columns
• Faster creation of a big number of columns in the spreadsheet

Bug fixes:

• [worksheet]
• don't crash when undoing the step "add info element".
• don't crash when changing the error bar types in the curve with no x-column selected yet
• don't show any context menu in the presenter widget
• use the full screen size in the dynamic presenter widget for worksheets with "use view size" property set to true
• allow to zoom the view in the dynamic presenter widget
• fix using custom value label with invalid data points in xy-curve (BUG 455214)
• don't crash when deleting a text label that was added after worksheet objects (plots and curves) were created via the plot data dialog (BUG 455096)
• fix displayed end value of date time plot range
• fix shifts in date time values due to locale settings (BUG 455579 & 462370)
• [spreadsheet] properly paste the data in the format 'yyyy-MM-dd hh:mm:ss' and similar
• [fit] fix locale usage in evaluation range
• [fit] correctly invalidate fit result when model changes
• [i18n] fix switch language option