Oriana for Windows calculates the special forms of sample and inter-sample statistics required for circular data (e.g. angles or directions measured in degrees, time of day, day of week, month of year, etc.).
The analyses include basic statistics such as mean vector and confidence limits, single sample distribution tests like Rayleigh's, pairwise and multisample tests such as Watson-Williams F-Test and chi-squared test, and pairwise correlations.
It also graphs your data in a variety of ways, including rose diagrams, circular histograms or wind roses, allowing you to easily demonstrate patterns.
Main features:
- New user interface
- Full Vista compatibility.
- Now uses standard Windows XP/Vista file open and save dialog boxes.
- Implemented filtering, restricting analyses and graphs to just cases that meet a certain criterion (e.g. Angle > 90 or Month = June).
- Circular data can now be entered as x/y coordinates defining the beginning and ending point of a vector. The new Data|Convert XY to Vector command can then be used to convert those points into vectors (angle and length).
- Added a Data|Define Vector Pair option to flag pairs of Angle/Linear variables that define a vector. These pairs can then be used to automatically pick the correct pair of variables in the two-variable graph dialogs, to calculate weighted mean angle in basic statistics, and to draw a weighted mean vector in the graphs.
- Modified data editor to work more like Excel - typing into a cell in edit mode replaces contents, not appends as it previously did, and tab key now moves cell focus to the right.
- Added export of results to an Excel file.
- Added import of Excel 2007/2010 files.
- Added option to export all result pages at once, rather than having to do each page separately.
- Added two new variables types, Circular Proportional and Circular Percentage.
- Circular scatterplots
- Raw Data Plots
- A large number of new options are available for the circular axes
-The segments in two-variable histograms can now be extensively customized
- A number of new options related to symbols are available
- Allow user to set the color of confidence intervals on circular plots that correspond to unreliable standard errors (previously always red).
- Allow user to set thickness of mean/r lines
- Added an option to display a table of frequencies and percentages used to create histograms.
- Option to have mean vector weighted by a linear variable (such as wind speed).
- Added option to export and print all graphs at once, rather than having to do each individually.
- Circular graphs can have a circle showing the critical value of the Rayleigh test. The length of the r vector can then be compared to this circle to assess its significance.
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