May 18th, 2012· Feature to apply the Douglas-Peucker algorithm for reducing the number of points.
· Feature to apply the empirical mode decomposition (EMD) algorithm, and exclude M components.
May 18th, 2012· Bug fixed: zoom in selected area
March 14th, 2012· Add feature to brush all points with same Z values as in selected area.
· Add feature to highlight and to select interactively the corrispondent data points on the others dataset, to explore the relationship of the two measures represented by X-Y plot in relation to the distribution of a third (Z) measure.
· Bug fixed: was missed the feature to vary the thickness of area contour lines
February 7th, 2012· BDS test (Brock-Dechert-Scheinkman) applied to residuals when fit data, apply ARIMA, SSA, and GMDH.
· A test for independence (Brock-Dechert-Scheinkman) based on the correlation dimension, applied to residuals.
· If resulting C2 value greater 3, the null hypotheses of no dependence are rejected asymptotically.
· When select fit model, try to minimize C2 value.
· Add feature to find best fit based on BDS test C2 value.
February 7th, 2012· When fit peaks, find total peak area (the area between the curve and the baseline)
· Add automation method to extract cyclic based on formula.
· Bug fixed: when extract cyclic it find fit only in window but not in all data points.
February 7th, 2012· Feature to estimate Correlation dimension (fraction of pairs of points with distance gt eps)
· Add several functions (Bessel, erfc) to calculator
· Find and copy distribution to Clipboard.
· Automation methods changes (add fft/wavelet filtering).
· Bug fixed when read csv file.
· Bug fixed: when extract cyclic it find fit only in window but not in all data points.
June 13th, 2011· Add several (21) peak and distribution functions.
June 13th, 2011· Add several (21) peak and distribution functions.
March 18th, 2011· Feature to present data as date-time format when export data to text file.
· Add Log Normal Shifted distibution.
March 18th, 2011· Keep program settings (in MyDocuments).
· Bug fixed: y-scale when great range was hidden.
December 7th, 2010· 3-parameters GammaPDF.
· Add several user models.
· Add automation methods to work with parametric curves.
October 28th, 2010· Gagnon-Harper chart diagram.
· Add feature to fit scale to ranges.
October 27th, 2010· Bug fixed: paint curves out of plot area.
August 20th, 2010· When find nonlinear fit, apply least squares or minimize abs. deviations or apply robust fitting.
· Bug in context help fixed.
August 20th, 2010· Add up to 9 parameters in nonlinear fit automation (was limited to 5).
· Include Excel examples how to call automation methods.
· Change RFTR (Procrust analysis) algorithm.
· Help system was updated
July 6th, 2010· Add up to 9 parameters in nonlinear fit automation (was limited to 5).
· Include Excel examples how to call automation methods.
· Help system was updated.
May 14th, 2010· Add Resistant Fit Theta Rho in Procrustes analysis.
· Apply GMDH Polynomial Neural Network to fit and to forecast data series.
April 16th, 2010· In group 'power' add Gamma probability density function .
· Add feature to exclude out of range points in Prune dialog.
· Add feature to estimate derivatives for parametric curves in function trace dilaog .
· Add automation methods to simplify export to Excel and work with parametric curves.
· Add automation methods to smooth data, apply SSA, ARIMA, ExtractCyclic.
· Include Excel examples how to call automation methods.
April 16th, 2010· Iteratively reweighted Procrustes analysis.
· Add several models to nonlinear fitting group 'rationals'.
· Add gamma models to nonlinear fitting group 'power'.
· Bug fixed: when log scale, range was limited 1.e-8, 1.e8.
· Bug fixed when fit ranges for all data.
· Bug fixed: crush when apply Procrust to data with different size.
February 1st, 2010· Approximate data with an Ellipse (prmt.dll)
November 10th, 2009· Compare two data series
· Command line support in form: Findgraph test.jpg or Findgraph test.txt
· Bug fixed when show tooltips.
· Bug fixed when find best fit with parameters and compose output string.
September 16th, 2009· Samples browser changes.
· Help update.
· Bug fixed: crush when find peaks and close dialog.
July 20th, 2009· Fits an autoregressive integrated moving average (ARIMA) model, apply to forecast next point.
· Bug fixed: paint points with negative values when log scale.
· Bug fixed: error when create residuals plot.
· Bug fixed: crush when find peaks and close dialog.
June 3rd, 2009· Add cosine models.
· Bug fixed: crush when find peaks and no points were selected.
May 22nd, 2009· Feature to average several data series to get one
· Feature to estimate a local x-dependent Lyapunov exponent
· Feature to generate random numbers with distribution you select
May 5th, 2009· Feature to estimate a local x-dependent Lyapunov exponent.
· Feature to generate random numbers with distribution you select.
· Bug was fixed: low/high-labels in the filter dialog were mixed.
February 6th, 2009· Recurrence plot (correlation Y1(x) vs Y2(x+t)) on graph border.
· Transformations: Log-return and Percentage-return.
· Feature to estimate a local x-dependent Hurst exponent H(x).
· Bug was fixed 'wrong step to scroll when trace function.'
January 8th, 2009· Feature to input axis X range instead start and scale.
· Feature to show separate peaks when find peaks.
· Bug was fixed 'Paint border when save as bitmap'
· Bug was fixed 'Paint error bars'
· Bug was fixed 'Legend when paint OLE object'
October 4th, 2008· Feature to fix any parameter when find curve fit.
· Feature to link background image to the zooming and translation of the curve.
July 24th, 2008· Feature to show colormaps and contour lines (izolines by z value).
· Feature to show points with color (radiur) set by parameter Z (x,y,z).
· Show Voronoi diagram with color defined by parameter Z.
· Bug fixed when plot pentagon, rhombus.
July 22nd, 2008· Include Rational model for simple curve analysis.
July 4th, 2008· Include Rational model for simple curve analysis.
May 27th, 2008· Charting: moving average with bands.
· Layers to show/hide all graphs with color selected.
· Local regression smoothing (Lowess).
· Detailed regression results when find curve fit (SSE, R-square, Adjusted R-square, Fit standard error,F-statistics, Confidence bounds for coefficients, plot with prediction bounds for function and for observations).
· DateTime format support when read date-time data from text file.
· When find fit (and best fit) show 'Fit Standard Error' instead 'Standard Error of Estimation'
· Bug fixed: in Procrustes analysis when assigned weight.
· Bug fixed: there was error when read integer values delimited by comma.
March 3rd, 2008· Formulas: ChiSquareDistribution, NormalDistribution, TDistribution, InverseNormalDistribution
· When extract cyclic, change the number of harmonics to find up to 20.
· Add peak functions: Pearson, AsymPearson, Doniach-Sunjic
· Add robust fitting in linear regression.
· Bug fixed: if edit existing formula and then click cancel, the formula was deleted
· Bug fixed: paint log scale grid.
February 11th, 2008· Add in log file: R-square, R-square adjasted, F statistic
· Add 'User model' 'Inverse' y = a / (x^c - 1) b
· Bug in LevenbergMarquardt fixed
· Bug fixed: averaging of two functions sometimes crashes FindGraph.
· Bug fixed: when find best fit, incorrect compare with NaN.
· In nolinear fit and in find peaks set LevenbergMarquardt by default (was Simplex)
September 18th, 2007· Feature to add labels with one click.
July 18th, 2007· Feature to add label Y with one click.
· Show all peaks on chart.
June 19th, 2007· High-Low-Open-Close, Candle diagrams
· In dialog add feature to save FFT (wavelet) transformed data.
May 25th, 2007· Pie-Chart, Stack column, Floating Column, High-Low-Close diagram
· bug fixed: when nonlinear fit, wrong XY ranges on step 1
· Vista compatible
December 6th, 2006· Redesigned interface and various plotting enhancements
September 15th, 2006· Redesigned interface and various plotting enhancements
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