PAST

Past 3.x - the Past of the Future

Version list

3.02

New module for PCA of Elliptical Fourier shapes
New module for size removal from distance measures (Burnaby's method etc.)
Box's M test for equal covariance matrices now handles more than two groups
Clustering results can be saved as NEXUS tree files
Two-sample and several-sample univariate tests: Now accepts samples either in separate columns or in a single column plus a Group column
Bug fix, clustering: Data were corrupted when bootstrapping repeatedly
Bug fix, Raup-Crick similarity: Missing data were treated incorrectly
Bug fix, data pasted into spreadsheet were truncated if the spreadsheet had too few rows
Conversion of value pairs to data matrix
Calculation of row percentages
Max number of group columns increased to six (useful for taxonomic distinctness)
Added arc sine (asin) to Evaluate Expression module

3.03

Bug fix: Insert rows and columns did not work in 3.02
Bug fix: File extension had to be typed in when saving graphic
Bug fix: Polynomial regression did not run
Bug fix: Crash in LOESS when bootstrapping with missing data
Bug fix: Symbols in plots were dashed when background grid was switched on
New option for showing group names in many plots
Added Number of polymorphic sites to Genetic sequence statistics

3.04

One-sample t test and one-sample Wilcoxon test
Test for single-sample proportion
Pie and doughnut charts
Font name and size can now be changed in Graph Settings
Geographical distance measure
Date/time conversion tool
Edit buttons added to spreadsheet tool bar
Bug fix: Pearson's R correlation inaccurate for very large data sets
Bug fix: Graphics overwrote part of text on some computers
Bug fix: Concentration ellipses did not show correctly on some computers
Bug fix: Select all from Edit menu did not work
Very large SVG paths did not read correctly in Illustrator - Past now splits them into pieces

3.05

F and t tests from parameters
REDFIT now does not start until hitting "Compute" button
Raup-Crick similarity now runs 50% faster
User control over color map in matrix plot, gridding etc.
New export file formats: NTSYS, TPS, RASC, RTF
Sum added to univariate summary statistics
Bug fix: Copy data did not work in some modules.
Bug fix: MANOVA did not update when constraints value was changed
Bug fix: Crash in spherical analysis/stereoplot
Bug fix: PCA loadings table showed raw loadings, not correlations when correlations selected in loadings plot
Bug fix: Filled convex hulls had no transparency
Bug fix: Broken Undo after Paste
Bug fix: Nonlinear fit: von Bertalanffy curve correct, but small typo in the equation shown above the plot
Bug fix: Coefficient of variation given as 0 when mean was negative
Improved handling of non-integer data for the Diversity module
Small fix in spatial autocorrelation

3.06

Clopper-Pearson confidence interval for single proportion
Confidence interval for many proportions, with plotting
Two-way repeated measures ANOVA
Two-way ANOSIM without replication
Stacked bar and area chart
Missing data supported in group variable for two-sample univariate tests etc.
Confidence interval for sample mean in one-sample t test
Wavelet analysis: Sampling interval can now be specified
Bug fix: Faulty selection of area in the spreadsheet
Bug fix: All columns were included in many analyses when disjunct columns were selected
Bug fix: Occasional crash in bivariate linear regression module
Bug fix: Find (search) function did not work
Bug fix: Garbled selection boxes in the REDFIT module
Bug fix: Discriminant analysis: Too many axes generated when number of groups exceeded number of variables+1
Bug fix: Crash in one-way ANOSIM if a group contained only one row
Bug fix: Landmark PCA deformation expansion factors not shown for negative PC scores

3.07

3D scatter and 4D bubble plot
Mann-Kendall test for trend
Fitting of species abundance along gradient to Gaussian packing model
Mantel-Cochran-Haenzsel test on multiple 2x2 contingency tables
Confidence interval on stratigraphic range
Bug fix: NMDS gave inaccurate results if environmental variables were included (introduced in 3.0)
Bug fix: Pairwise Mahalanobis in MANOVA gave 0 instead of 'fail' for errors
Bug fix: Procrustes analysis overwrote group columns
Bug fix: K-means clustering failed for very large numbers in input
Bug fix: Missing numerical output in abundance distribution modelling
Bug fix: Excessive computation times in some modules in Mac version
Save image added to surface plot
Improved robustness of Gaussian fit in nonlinar fit module

3.08

Powerful scripting language, to be extended in future versions
Mood's median test for two samples
Unconditional confidence interval for individual rarefaction
Tamura genetic sequence distance
Option for using group column for box plot
Sorting moved to menus, and other improvements in sorting
Bug fix: Discriminant analysis showed blank plot for data with 3 groups
Bug fix: Linear regression crashed if started twice (introduced in 3.07)
Bug fix: Occasional crash on program exit (introduced in 3.07)
Bug fix: Column data type menu could get garbled (introduced in 3.07)
Bug fix: Small inconvenience in Row colors/symbols

3.09

ARMA and intervention analysis for time series
Tests for equality of regression slopes in bivariate fitting (OLS, MA and RMA)
Insolation model, 250 Ma to Recent (La2004)
Copy-paste now works also on graphics, but only bitmap format (you must still export to SVG for publication quality)
New in Transform menu: Convert to ranks
Many new functions in the scripting language
Bug fix Unitary Associations: Copy-paste did not work for some output
Bug fix Moran’s I: Incorrect significance line for very large sample sizes
Bug fix: Hidden windows now pop to front when selected again from menu

3.10

Circular spectral analysis for point events
Equal axes button in graph preferences
Linear regression now reports standard error of estimate
Scripting: New functions, including user-defined windows (forms) with labels, buttons, edits, check boxes.
Increased max number of items in clustering from 900 to 3500
Improved algorithm for single linkage clustering of large data sets
Drag-drop files onto spreadsheet
Bug fix: Remove column or row did not work after moving it
Bug fix: Freeze after error condition in Evaluate expression
Bug fix for Mac OSX: Copy-paste into spreadsheet did not work properly
Minor algorithm improvement in Unitary Associations
New application icon

3.11

New: Interface to Google Maps, with plotting of points, polygons and lines (Windows only)
New: “Graphics basket” for managing and combining plots
Bug fix: Copy-paste from Excel broken under Mac OSX
New: Nested ANOVA
Improved: Selection of file format for graphics export
New: Support for reading RASC files
Small fixes in Unitary Associations
New: Pooled and unpooled z ratio for risk difference
Replace now only operates in selected cells
Omega2 in ANOVA set to zero if negative
User-defined N for Monte Carlo normality tests
Sinusoidal fit: Frequency resolution increased from 1/1000 to 1/500,000 of Nyquist frequency
Thin-plate spline deformation grid can now be extended in x and y directions
Scripting: New functions
Beta diversity now takes samples in columns, not rows, to be consistent with other modules
Bug fix: Bivariate linear regression: Slope was not shown in the Statistics tab for RMA or MA.
Bug fix: Save data in other than the Past format broken in some recent version
Bug fix: 3D scatter plot crashed when axis ranges were very different

3.12

New “detach tab” button allows viewing several tabs (subwindows) at the same time
PCA of 3D landmarks, with 3D plotting
Use your own images as symbols in plots
Arrow plot, alternative to rose plot in circular analysis
Plotting of residuals in bivariate linear regression
Combined box and jitter plot
Plotting of displacement vectors in thin-plate spline deformation module
Contingency table analysis now includes table of residuals etc.
Z and t tests for probability of a single observation taken from a given sample
Scripting: New functions
Bug fix: Wrong labels on points in ternary bubble plot
Bug fix: Occasional error message when exiting program on Mac
Numerous small improvements in user interface

3.13

Graphics can now be exported also in the PDF format
Bug fix: Excessive computation time for two-sample tests on Mac OSX
Bug fix: Mann-Kendall test, incorrect p values for negative trend and n<11
Bug fix: Anderson-Darling normality test, incorrect p values for extremely large data sets
Bug fix: Cluster analysis, save Nexus file, faulty when using comma decimal separator
Max string length for x axis labels increased to 20

3.14

New: Point pattern statistics for counts in quadrats (Morisita’s index etc.)
New: Dunn’s post hoc test for Kruskal-Wallis (in addition to pairwise Mann-Whitney)
Bug fix: Export graphic file type selection did not work on Mac OSX
Bug fix: Search and replace stopped after first hit
Bug fix: Group labels not shown for small groups (n<3) in x-y plots
Bug fix, NMDS: Missing values (?) in environmental variables not handled correctly
REDFIT: Maximal oversampling increased to 64
Neighbour joining: Root (outgroup) can now be selected in menu
Normality tests now recognize samples marked as groups
Survival analysis: Censoring events can now be plotted on the Kaplan-Meier curves

3.15

Tukey’s post-hoc tests for two-way ANOVA
Permutation test for correlation and one-way ANOVA
Mosaic plot for 2-way and 3-way contingency tables
Stem plot
Distribution-free confidence intervals for stratigraphic ranges
Max N for wavelets increased to 130,000
Improved histogram plots
Univariate summary statistics now supports groups
New in Regular interpolation: Option for antialiasing (sinc) interpolation
Sorting now supports both types of decimal separator
Remove uninformative rows/columns: New option to remove constant-valued rows/columns
Bug fix, Ward’s method clustering: Missing data not handled properly
Bug fix: Setting row colors/symbols required user to select some data in addition to a group column
Bug fix: Scatter plot labels sometimes disappeared at edges of plot
Bug fix, CCA: Table of scores did not update when changing the scaling type