Aug-24, 2020

• Release 10.7 of the SDL Component Suite
• Support of the new RadStudio 10.4 Sydney / Delphi 10.4 Sydney / C++Builder 10.4 Sydney
• many improvements and new features (see below for detailed list)

  • SDL_cdata
    
    • the function GetEDXLines returns analytically interesting EDX lines

  • SDL_colsel
    
    • bug fix: TColSel did not trigger the onChange event if the color was redefined via the color dialog

  • SDL_cpuid
    
    • the new function GenerateCPUIDEx includes the MAC address of the network adapter (in addition to the CPU info)
    • bug fix: the function CheckGeneratedCPUID did not work correctly

  • SDL_datatable
    
    • the method ScanForCatValues analyses a categorical variable
    • the method Assign implemented
    • the new method RemoveMarkedRows removes all marked rows
    • the new methods CopyDataColumnFromArray, CopyDataColumnToArray, CopyDataRowFromArray and CopyDataRowToArray support the copying of columns and rows to and from open arrays
    • TDataTable.SumOfSquaredMarkedCells and TDatatable.SumOfSquaredNumCells calculate the sum of squared data cells
    • TDataTable.ExportAsASC and TDataTable.ImportASC now support the export and import of custom data
    • the function QuartilesOfMarkedCells calculates the quartiles of marked cells
    • the new methods CopyDataFromArray and CopyDataToArray allow to copy the numeric data to open arrays
    • new method IfAnyCellHasCellState allows to test cells states of a range of cells
    • the new method CreateContingencyTable calculates the contingency table
    • the method CountNominalIDs returns the number of defined nominal IDs
    • bug fix: the methods MinRowAttrib, MaxRowAttrib, MinColAttrib and MaxColAttrib returned an invalid row/column index under some circumstances

  • SDL_dstruct
    
    • implemented the routines DecodeBase64 and EncodeBase64 to support base-64 encoding
    • EncodeASCII85 now allows to insert line breaks
    • implemented TAssocArray.Assign
    • the new methods InsertColumn and RemoveColumn insert and remove a column to/from the string array
    • the new property TByteMatrix.DefaultValue allows to control the returned value, if the index of a byte is out of range
    • added the following methods of TFeatureMatrix: RemoveFeature, SetFeatType, RenumberFeatures, GenerateFeatNames

  • SDL_filesys
    
    • the new property ParentWnd of the TUnivSaveDialog allows to assign a parent window in order to control the position of the default dialog
    • the functions DateTimeToFileTime and FileTimeToDateTime convert file times to date times and vice versa.
    • the functions GetFileDates and SetFileDates support the access of file dates
    • the functions IsValidFileName and ReplaceInvalidFileNameChars test and process invalid filenames
    • the function GetMemoryStatus retrieves the available system memory
    • the function IsFN83CompliantPath checks for Windows 8.3 compliant filenames
    • the function GetMacAddress retrieves the MAC address of the network adapter

  • SDL_math1
    
    • the function modr calculates the remainder of a floating point division
    • the function Squash calculates a sigmoid function
    • the function InterpolXYTable now supports both ascending and descending pivot tables
    • the new function ProductConsecInts calculates the product of consecutive integers

  • SDL_math2
    
    • the function CalcRanks calculates the ranks of data in a vector
    • the function ReducePolygon allows to remove superfluous vertices from a polygon
    • the function CreateSigmoidArray fills an array with values of the sigmoid function
    • the function CreateGaussianPeaks generates a signal based on Gaussian peaks
    • the function Gauss2D fill an array with value from a Gaussian radial basis function
    • the functions ApplyCompassKernel and ApplyKirschKernel filter a 2D matrix by the compass and the Kirsch kernel, respectively
    • the new function KernelConvolve is a general 2D kernel convolving function
    • TMathExpression.HelperObject implemented
    • the function ExtractVarNames scans a mathematical expression for variable names
    • the functions ConvertFromDiffPolygon and ConvertToDiffPolygon allow to convert polygons between absolute and relative coordinates

  • SDL_matrix
    
    • TMat4D.LoadBinary now checks whether the file is too big for the 32-bit version
    • implemented TMat4D.CopyVectorToPixel and TMat4D.CopyPixelToVector
    • the LoadBinaryNoFmtCheck has been implemented to be able to load the old binary data format (which did not contain information on the numeric format)
    • the methods LoadBinary and SaveBinary have been extended to all four kinds of matrices (TMatrix, TIntMatrix, TMat3D and TMat4D)
    • the new methods RemoveRow and RemoveColumn delete specific columns or rows
    • the method Read4DLayer reads layer data from a binary TMat4D file
    • the method Read4DLayerAndAccumulate accumulates layer data obtained from binary TMat4D files
    • the new method TMat4DAccumulateLayer supports the accumulation of layers
    • the following methods of TMat4D have been converted to functions: AppendToBinaryFile, LoadBinary, ReadBinary, ReadLayer and SaveBinary
    • the new overloaded method TMat4D.FillLayer allows to fill a particular layer with differently distributed values
    • the method TMat4D.CopyPixelTo1DArray allows to copy a pixel of the 4D datacube
    • the methods TMatrix.Fill, TMatrix.FillRandomGauss and TMatrix.FillRandomUniform are now available in a second overloaded version
    • the method CalcHatMatrix calculates the hat matrix
    • implemented ExportAsASC and ImportASC
    • the classes TMatrix, TIntMatrix, TMat3D and TMat4D now provide public access to their internal data array if SDLPUBLICMAT is defined
    • added new overloaded versions of CopyFromArray and CopyToArray
    • added the method TMat3D.MeanVar

  • SDL_membl
    
    • first implementation of the memory based learner (aka. kNN)

  • SDL_ntabed
    
    • the new property ShowCellCursor controls the visibility of the cell cursor
    • the new event OnClear allows to replace the clear routine by user-defined code
    • bug fix: selection of TNTabEd was wrong after pasting data via PopupMenuClickExtClip

  • SDL_openarrays
    
    • the function IsDichotomous tests whether the values of an array are dichotomous
    • the function SortAndRemoveDuplicates sorts array values and removes duplicates
    • the function SaveArrayAsImg allows to save a matrix as an image (BMP, PNG, JPG or clipboard)
    • the functions ReadBinaryArrayHeader, LoadBinaryArray and SaveBinaryArray have been extended to support 3D and 4D matrices
    • the functions RemoveColumn and RemoveRow delete columns and rows of an array
    • the function CloneAndReverseArray clones an array and reverses the order of the elements
    • the function FindInArray search for a value in an array (both integers and strings)
    • the function SumOfSquaredDiffs calculates the sum of squared differences
    • the function DistanceOfObjects calculates a multivariate distance
    • the function FillArrayMasked allows to fill masked regions of a 2-dimensional matrix
    • the functions SortArray and ShuffleArray sorts and randomizes one-dimensional arrays, respectively
    • the function CalcHatMatrix calculates the hat matrix of a two-dimensional array
    • the function EdgeVector calculates various parameters along the edge of a two-dimensional array
    • the functions LoadBinaryArray and SaveBinaryArray load and save the 2D open arrays in binary form
    • the function ReadBinaryArrayHeader reads the header of a binary array file
    • BoolToNumArray converts a boolean array to a dichotomous numeric array
    • the function FloodFillArray implements a flood filling algorithm for matrices
    • DichotomizeArray extended to support more array types
    • implemented an overloaded version of PercentileArray which supports 2-dim. arrays
    • FindInSortedArray allows a quick search for array elements
    • CloneArray extended to deal with single precision arrays
    • InvertArray inverts boolean arrays
    • MinMaxArray extended to TSingleArray
    • MinArray extended to return the found positions of the minima for TIntArray and TInt2DArray
    • MaxArray extended to support TInt3DArray and TInt4DArray
    • PercentileArray calculates a quantile of the array values
    • FrequDistOfArray calculates the frequency distribution of array values
    • DichotomizeArray allows to create a boolean matrix from a numeric matrix
    • FillArrayRix fills the array with a running index
    • LoadArray loads data from files previously stored by StoreArray
    • the functions CopyVectorToArrayColumn and CopyVectorToArrayRow copy a vector to an array
    • the function EqualArrays compares two arrays
    • bug fix: FillArray of boolean array did not work correctly

  • SDL_rchart
    
    • TContourPlot provides a better oversampling resolution for low resolution images
    • bug fix: TRChart.Assign did not copy some of the annotation properties
    • bug fix: TContourPlot rendered the interpolated (oversampled) pixels at the wrong positions (shifted by half a pixel)
    • bug fix: RChart did not correctly calculate the extents of an tkMarkEBar element

  • SDL_replist
    
    • the methods TRLData.RemoveColumn and TRLData.InsertColumn allow to delete or insert a column
    • the method TRLData.InsertRow inserts a row
    • the method TReportListview.RemoveColumn deletes a column of the report listview
    • the method TReportListview.InsertColumn inserts a column in the report listview
    • SortEnabledState allows to sort the enabled and disabled rows of the report listview separately
    • bug fix: reading from XML files did not correctly read data if the number of rows was zero

  • SDL_rot3d
    
    • TRot3D supports now an unlimited number of colors of the data points (no longer limited to 32 colors)

  • SDL_sdlbase
    
    • the type declaration TDistMode and the definition of the corresponding IDs DistModeId has been moved from SDL_matrix to SDL_sdlbase
    • new type declaation TPIntArray for integer point arrays
    • the constant array CSVDELIMITERIDS provides now names of CSV delimiters

  • SDL_sdlcolors
    
    • the procedures ColorToHSV, HSVtoColor, HSVtoRGB and RGBtoHSV provide conversion routines for the HSV color system
    • the procedures ColorToHSL and HSLtoColor convert between TColor and the HSL color model
    • the procedures HSLtoRGB and RGBtoHSL convert between HSL and RGB color space
    • the functions HSItoColor and ColorToHSI transform a HSI color to the (RGB) TColor and vice versa
    • the new method LogTransform allows to create a logarithmic color scale
    • the new method TColorArray.ReverseRGB reverses the RGB order
    • the new methods TColorArray.Backup and TColorArray.Restore provide a simple backup and restore capability

  • SDL_statis
    
    • the new function MedianTest implements the median test
    • the new functions Chi2OfContTab and Chi2OfContTabYates calculate the chi-square value of a contingency table
    • the new class TCFEvaluator provides an easy way to calculate binary classifier metrics
    • the new function AdjustedRandIx calculates the adjusted Rand index
    • the new function FriedmanTest provides Friedman's test for homogeneity of groups
    • the new function LeveneTest provides Levene's test for equal variances
    • the new function Lambda calculates the Lambda value of contingency tables
    • the new functions DurbinWatson and DurbinWatsonCrit5pct support the application of a Durbin-Watson test for serial correlation.
    • the new function Prob2x2Contingency calculates the probability of a contingency table
    • the new function FisherExactTest calculates Fisher's exact test
    • the new function PerformChi2DistComp performs a chi²-test to compare empirical distributions
    • bug fix: TCrossValidator did not create the matrices XMat and YMat
    • bug fix: TCrossValidator.Execute did not correctly recognize the cases when calculating TPRate and FPRate

  • SDL_streams
    
    • new function StreamAsByteString reads a byte stream as ASCII string
    • the new class TMixedFStream supports the handling of mixed binary/ASCII strings

  • SDL_stringl
    
    • the new functions ExtractAfterTrigger and ExtractBeforeTrigger extract substrings
    • the new function SplitString splits a string into two halves
    • the new function NumberedPosBw searches for a substring backwards
    • the function CreateParList has been extended to support boolean arrays as well
    • the new function DetectCSVDelimiter scans a string for CSV delimiters
    • the new function ConvertVariant returns a string representation of the a variant value

  • SDL_univconst
    
    • Math constants uc_MaxInt64 abd uc_lnMaxInt64 added

  • SDL_vector
    
    • the new function IsDichotomous tests whether a vector is dichotomous
    • implemented ExportAsASC and ImportASC

Dec-17, 2018

• Support of the new RadStudio 10.3 Rio / Delphi 10.3 Rio / C++Builder 10.3 Rio

Mar-09, 2018

• Release 10.6 of the SDL Component Suite
• new unit SDL_openarrays provides functions to process open arrays
• many improvements and new features (see below for detailed list)

  • SDL_dstruct
    
    • the new class TFeatureMatrix supports mixed-type two-dimensional matrices
    • the TStringArray class supports now the Assign method
    • the class TAssocArray provides now the method ResolveAsInt

  • SDL_filesys
    
    • the function StripExtension has been adjusted to correctly process filenames with more than one dot
    • the procedure EnsureCRLFInFile ensures that CRLF characters will terminate lines in text files
    • the function ReadLastNLinesOfTextFile reads the N last lines of a text file
    • the function CountLinesInTextFile provides now a callback routine

  • SDL_geomap
    
    • recording of the mouse trace implemented: ClearMouseTrace, MouseTraceColor, MouseTraceInvert, NumMTracePoints, MouseTrace

  • SDL_math1
    
    • the function RoundLimit rounds a number within in an interval
    • the function WithinBounds has been extended by the additional parameter Margin
    • the new function CcwTriangle tests the order of triangle corners
    • the new function SortSwap exchanges two values if they do not satisfy the sort criterion
    • the function SegmentsIntersect checks whether to line segments intersect
    • the function DistanceToSegment calculates the distance between a point and a line segment
    • the function HistoBinRef calculates the bin reference value of a histogram
    • the function DistFromEllipse calculates the distance between a point and an ellipse
    • the functions Min and Max have been removed (use unit system.math instead)
    • the functions MinMaxOfArray and MeanVarOfArray have been renamed to MinMaxArray and MeanVarArray and moved to SDL_openarrays

  • SDL_math2
    
    • TCurveFit.CalcLinFit raises now an exception if the slope becomes infinite
    • the function PolygonArea provides now a second overloaded version which counts the intersections
    • the function DistanceToPolygon calculates the closest distance from a point to a polygon
    • the function PolygonLength calculates the length of a polygon
    • the functions TCurveFit.CalcPolyFit and TCurveFit.CalcCenteredPolyFit have been extended by alpha (the p-values of the parameters)

  • SDL_matrix
    
    • the following methods now support multi-processing to speed up calculations: TMatrix.Square, TMatrix.MeanOfLayersToMatrix, TMat4D.MinimumOfLayersToMatrix, TMat4D.MaximumOfLayersToMatrix, TMat4D.StdDevOfLayersToMatrix
    • the function TMat4D.CRCofData is now provided as a second overloaded version
    • the new procedure CopyArr3DLayerToArr2D copies a layer of a 3D array to a 2D array
    • the procedure CopyMatrixToArray copies a TMatrix to a 2D array
    • the procedure CopyArr3DLayerToMatrix copies a layer of a 3D array to a TMatrix
    • the methods TMatrix.CopyFromArray and TMatrix.CopyToArray copy matrix data from and to dynamic arrays
    • the methods TMat4D.CopyArrayToLayer, TMat4D.CopyLayerToArray, TMat4D.CopyTimeSlotToArray and TMat4D.CopyArrayToTimeSlot copy matrix data to and from dynamic arrays
    • the function Dichotomize compares the values of a matrix to a threshold
    • bug fix: TMatrix.Histogram created one bin less than required
    • bug fix: TIntMatrix.ExchangeRows addressed the wrong rows (offset by 1)
    • bug fix: TMat4D.CopyMat3DToTimeSlot used the default values of TMat4D instead of the source matrix if the indices were all zero
    • bug fix: TMat4D.Percentile returned a (wrong) zero quantile under certain circumstances

  • SDL_numio
    
    • bug fix: the TNumIO2 component did not accept exponential notation when the InputFormat was itDynamic
    • TNumIO2 supports now the KeyPreview property of the parent form

  • SDL_openarrays
    
    • new functions: AbsValArray, AccumulateArray, AddArrays, AddScalarToArray, CloneArray, CopyArray, CopyArrayColumn, CopyArrayRow, CountTrueCellsOfArray, CountValues, DiscretizeArray, FillArray, FillDiagArray, FillRandomNormal, FillRandomUniform, FlipDimArray, IncArray, MaxArray, MeanArray, MeanVarArray, MinArray, MinMaxArray, MultiplyArrayByScalar, MultiplyArrays, MultiplyArraysElemw, StdDevArray, StoreArray, SubtractArrays, TraceOfArray, TransposeArray, VectorCrossProduct, VectorDotProduct

  • SDL_rchart
    
    • the TContourPlot class provides now the following methods and properties to draw on top of the contour plot: DataContainer, NumItems, DataColor, FillColor, LineWidth, TransparentItems, Arc, Bar3D, Ellipse, Arrow, Text, DrawTo, DrawToRelPix, Line, LineOffset, ClassDefault, MoveTo, MoveToRelPix, MarkAt, MarkErrorBar, Rectangle, RectangleRelPix, RectFrame, SaveData, LoadData, PenStyle, TextFontStyle, TextBkStyle, TextBkColor, ClassVisible, Isometric, Font
    • TRChart.TextBkColor, TSmithChart.TextBkColor and TContourPlot.TextBkColor are deprecated and have been replaced by FillColor
    • the properties TRChart.TextFont, TSmithChart.TextFont and TContourPlot.TextFont provide a global definition of the font of the text elements
    • the property TextBkStyle provides now an individual control of the text background style (was formerly global to all text elements)
    • RChart now supports long text elements, see Text and DataLongText
    • the new event OnBeforeRenderText allow to adjust text items before rendering them
    • RChart and its descendants now support annotations, providing the following properties and methods: CountAnnoByClass, CopyAnnoFrom, LoadAnno, SaveAnno, NumAnnos, AnnoClassVisible, FindNearestAnnoElem, AnnoContainer, AnnoMode, ClearAnnotations, RemoveAnnoItem, AnnoBelowChart, AnnoLongText, AnnoTextOnTop, SearchAnnoItem, AnnosVisible
    • the methods TRChart.GetTransformParams, TSmithChart.GetTransformParams and TContourPlot.GetTransformParams retrieve the scaling parameters of the axes
    • the TContourPlot class now provides the following properties to control the caption of the chart: CaptionPosX, CaptionPosY, CaptionAlignment, CaptionAnchorVert, CaptionAnchorHoriz,
    • the property CaptionTrim allows to confine the length of the chart caption
    • the functions FindNearestItemScreen, FindNearestItemReal and FindNearestItemAlongAxis now provide an overloaded version to restrict the search to visible layers only
    • the new method TContourPlot.ConfineZoomRange allows to confine zoom and pan actions in contour plots
    • the new methods TRChart.SearchDataItem, TSmithChart.SearchDataItem and TContourPlot.SearchDataItem allow to search for data items
    • the method DrawToRelPix is available in a second overloaded version allowing to specify the origin of the line
    • the new properties TRChart.PanGridOffsX, TContourPlot.PanGridOffsX, TRChart.PanGridOffsY and TContourPlot.PanGridOffsY allow to shift the snap positions when MouseAction is set to maPanGrid.
    • TRChart and TContourPLot now provide three additional drawing elements: TRChart.CursorVert, TContourPlot.CursorVert, TRChart.CursorHoriz, TContourPlot.CursorHoriz, TRChart.DoubleArrow and TContourPlot.DoubleArrow
    • TSmithChart.OnScalesRendered and TSmithChart.OnBeforeRenderData are now published
    • the following drawing elements support now both world and screen coordinates: Arrow, MarkAt, MoveTo, DrawTo, Line, Rectangle, Text, CursorHoriz, CursorVert, RectFrame
    • the property TContourPlot.PlotMode has been extended to support transparent pixel images
    • TContourPlot.PercentilePivots supports now the restriction of the percentile calculation to unmasked areas
    • the events TContourPlot.OnBeforeRenderData, TContourPlot.OnScalesRendered and TContourPlot.OnScaleTickDrawn are now published properties
    • the function ItemDescription returns the description of a chart element
    • the properties TRChart.ScalePropsX, TRChart.ScalePropsY, TContourPlot.ScaleX and TContourPlot.ScaleY provide now the sub-property MouseAction which allows to control the interactive panning and zooming of the scales
    • the new methods TRChart.DetectScale and TContourPlot.DetectScale allow to check the presence of a scale at a particular position of the chart canvas
    • bug fix: TRChart caused slight range change when using maPanGrid
    • bug fix: TContourPlot.Assign did not copy the mask palette
    • bug fix: components derived from TCustomRChart created an access violation in the Light Edition

  • SDL_replist
    
    • the methods ExportCSV and ImportCSV allow you to export or import the cells of the report list to/from a CSV file
    • the function FilterAndSort has been changed so that the filter expression evaluates all selected columns together (instead of evaluating the search on a column per column basis)
    • the new methods SelectColumn and SelectRow select a specific column or row, deselection all others
    • the new event OnReadCell allows to adjust cell contents during reading
    • the new event OnCursorKeyAction handles the pressing of the cursor keys
    • the methods SetAllCheckmarksOfCol and InvertAllCheckmarksOfCol provide now additional overlaid parameters to affect only enabled rows
    • bug fix: the property AsNumber raised an exception if the corresponding cell was checked
    • bug fix: FirstCheckedElemInCol created an integer overflow if report listview is empty
    • bug fix: AutoColWidth did not correctly process the width of the column header

  • SDL_scale
    
    • property MouseAction implemented
    • the new OnZoomPan event is triggered if any zooming or panning occurs

  • SDL_sdlbase
    
    • declaration of the new types TTriState, TInt3DArray and TDouble4DArray
    • the type declaration TCSVDelimiters has been moved from unit SDL_datatable to SDL_sdlbase
    • the type declaration TZoomPanMode has been moved from the unit SDL_colorscale to SDL_sdlbase
    • the function ResolveCSVDelimiter assigns a CSV delimiter

  • SDL_sdlcolors
    
    • the constant array AllSDLColors contains all colors declared in the SDL Component Suite
    • the constant array AllSDLColorNames contains the names of all colors declared in the SDL Component Suite
    • the function ObtainColorName returns the name of a color

  • SDL_sline
    
    • the method Distance now returns the distance including the sign

  • SDL_streams
    
    • new functions implemented: ReadSingleFromStream, WriteSingleToStream, WriteDoubleToStream
    • bug fix: ReadLnStreams did not read non-printable characters in a stream

  • SDL_stringl
    
    • the function Tokenize now supports up to 1000 tokens
    • the function StrToTriState converts strings to tri-state variables
    • the function TriStateToStr converts tri-state values to their corresponding strings
    • the function SortableNumericString rectifies numeric strings to become sortable
    • the function AutoFormatData now provides an overloaded version to use commas instead of decimal points
    • the function RemoveMultiChars removes duplicate characters in a string
    • the function FindFirstDigit searches for the first digit in a string
    • the function CreateParList generates a string of comma-separated parameters

  • SDL_vector
    
    • the new method FindExact compares all elements of an integer vector to a given value
    • the two new methods CopyToArray and CopyFromArray allow to copy data between arrays and a TVector
    • bug fix: TVector.Histogram and TIntVector.Histogram created one bin less than required

May-01, 2017

• Support of the new RadStudio 10.2 Tokyo / Delphi 10.2 Tokyo / C++Builder 10.2 Tokyo

Oct-10, 2016

• Support of the new RadStudio 10.1 Berlin / Delphi 10.1 Berlin / C++Builder 10.1 Berlin
• Release 10.5 of the SDL Component Suite
• The support of several older compilers is discontinued (C++Builder 6, BDS 2006, RadStudio 5 to 7, RadStudio XE to XE3 are no longer supported)
• Release 10.5 supports the following compilers: Delphi 6&7, RadStudio XE4 up to RadStudio 10 Seattle and RadStudio 10.1 Berlin

  • SDL_colorscale
    
    • bug fix: the Assign method did not copy all internal fields

  • SDL_datatable
    
    • the procedures SetRowAttributes and SetColAttributes offer now an overloaded version which allows to mask out bits

  • SDL_dendrogram
    
    • the size of the area where the object labels are displayed can now be adjusted interactively if the new property MarginIsMoveable is set TRUE

  • SDL_dstruct
    
    • the TBitFld class provides now the Assign method
    • the TStringArray class provides now the array property AsInteger
    • bug fix: SHA1FromFile, SHA1FromString and SHA1FromStream returned wrong results in 64-bit mode

  • SDL_filesys
    
    • the universal save dialog uses now the class TFileSaveDialog as the default dialog
    • the function InsertBeforeFileExt allows to insert a substring into a filename

  • SDL_htmlsupport
    
    • the function ConvertHTMLBodyToText converts the body of an HTML file into an unformatted string
    • the function ExtractHTMLBody returns the body of an HTML file

  • SDL_math1
    
    • the functions ConfineValue and ConfinePointToRect adjust a value or a point to be inside a specified range or rectangle
    • the function MinMaxOfArray returns the minimum and maximum of an array
    • the function MeanVarOfArray returns the mean and the variance of an array
    • the function InterpolTable interpolates a function defined by regularly spaced pivot points
    • the function InterpolXYTable interpolates a function defined by irregularly spaced pivot points
    • the function EuclideanDistance is now available in a second overloaded version
    • bug fix: QuickSelect was too slow if all values in an array were the same
    • bug fix: QuickSelect crashed for small unusual data sets

  • SDL_math2
    
    • the function CheckParanthInExp checks the correctness of parantheses in mathematical expressions
    • the OnVarRequest event of TMathExpression has been extended to include the position of the variable name
    • the procedure MovingKernelFilter implements a moving kernel filter
    • the following sinc filter kernels are now supported: CalcSincLPKernel, CalcSincHPKernel, CalcSincBPKernel, CalcSincBSKernel
    • Chebychev filter implemented: ChebychevFilter, CalcChebFilterCoeffs

  • SDL_matrix
    
    • TMat4D.ReadBinary allows to read binary data without using memory
    • the new event OnReadElement provides elementwise feedback during reading a binary file
    • TMat4D.Transpose implemented
    • the methods TMat4D.CountValues and TMatrix.CountValues count values falling into an interval
    • the methods TMat4D.Resample and TMat4D.CRCofData now trigger the event OnPercentDone
    • the methods TMat3D.Fill and TMat4D.Fill now treat the special case of zeroing the data matrix
    • the speed of the method TMat4D.MeanOfLayersToMatrix has been improved considerably
    • TIntMatrix.SaveBinary, TIntMatrix.LoadBinary and TIntMatrix.OnPercentDone implemented
    • the new method TMat4D.SquaredSum calculates the sum of squares
    • the method TMat4D.ReadLayer allows to read a specific layer of a Mat4D matrix
    • the method CountMaskedZeros counts cells after applying a logical AND with a bitmask
    • the method TMat4D.Copy1DArrayToPixel copies a one-dimensional array into a pixel column
    • the method CholeskyDecomp decomposes a positive definite matrix into its Cholesky factor
    • bug fix: TMat4D.SaveBinary created an integer overflow for very large matrices (more than 2³¹ cells)

  • SDL_rchart
    
    • the new property TContourPlot.InvalidDataBmp indicates changes in the contour plot data area
    • the method Arc draws an elliptical arc
    • a mask value of 255 has now a special meaning (color inversion of the underlying image)
    • the standard layout "rcl_X2Both_Y2Both" has been revised
    • the new event OnBeforeCrossHairMove allows to block interactive crosshair movement
    • TContourPlot now supports recording the mouse trace: MouseTrace, ClearMouseTrace, NumMTracePoints, MouseTraceColor, MouseTraceInvert
    • bug fix: ResetComp was private instead of public

  • SDL_replist
    
    • CountCheckedElemsInCol now counts the checked elements of enabled rows only
    • the method SetColumnOrder allows to rearrange the visual order of the displayed columns
    • the readonly property ColumnOrder returns the visual position of a particular column
    • bug fix: the color of the fixed columns was always clSilver (instead of FixedColor)
    • bug fix: component displayed spurious lines after resizing
    • bug fix: FirstSelectedRow did not take care of disabled rows

  • SDL_sdlbase
    
    • the following data types have been declared: TBoolArray, TVariantArray, TStrArray, TBool2DArray, TDouble3DArray, TInt2DArray, TSingleArray
    • the class TCrossHair now supports the method SetPos

  • SDL_statis
    
    • the function PercentileOfArray calculates the percentile of an array of data values

  • SDL_streams
    
    • the function ReadDoubleFromStream reads a double value from a binary stream
    • bug fix: ScanStreamFPNum did not set the position of the stream correctly
    • bug fix: ScanStreamDecimal did not skip CRLF correctly

  • SDL_stringl
    
    • the type declaration TOpenStringArray is now based on strings (instead of ShortStrings)
    • the function Tokenize provide now a second overloaded version supporting an escape character

  • SDL_vector
    
    • the classes TIntVector and TVector support now the Assign method
    • the new method PearsonCorrCoeff calculates Pearson's correlation coefficient of two vectors

 

(news prior to October 2016 removed)