What's New in iogas 6.2

Transcription

1 What's New in iogas 6.2 Stereonets Graph>Stereonet A Stereonet plot is a graphical representation of 3D structural data on a 2D surface and is used to analyse the angular relationships between lines and planes in 3D space. The stereonet plotting functionality in iogas includes the ability to plot lineations and planes, determine means per colour group, calculate beta axes, change plot projection on-the-fly and produce in-built calculated statistical reports. iogas supports equal area (Schmidt net), equal angle (Wulff net) and orthographic stereonet projections. Colour attribute by structure group and modify the display using the stereonet visibility and rotation controls. Add user planes directly onto the stereonet or from a file. 1. Planes, lineations, poles and user planes coloured by structure type 2. Shaded planes in rotated stereonet

2 3. Calculated great circles and beta axes Random Data Subsampling Data>Randomly Subsample Data Reduce large datasets down to a manageable size for analysis in iogas by generating a random subsample of data. Patterns or trends obtained in the subsampled data can also be compared with those obtained from the entire dataset to test for sampling bias. Top: Scatter plots of entire dataset. Bottom: Scatter plots of 20% random subsample by colour group

3 Pairwise Scatter Plots Graph>XY Plot (Pairwise) XY (or YX) Plot created for each selected variable pair: Variable 1 vs Variable 2, Variable 3 vs Variable 4, etc. First variable in each pair used as the X axis and the second variable as the Y axis. Useful for displaying data collected by different analytical methods or for XRF calibration. Requires an even number of selected variables. Glinking New buttons and added to scatter plots, pairwise scatter plots or a scatter plot matrix toolbar. In a typical correlation plot, the general trend as indicated by the correlation coefficient may not be representative of any local trend. In order to examine local trends within a global trend a technique referred to glinking may be applied. In iogas, glinking can be used with data displayed in scatter plots, pairwise scatter plots or a scatter plot matrix. Glinking renders lines between the data points based on a defined grouping field (e.g. Hole ID) and ordered according to a continuous variable (e.g. Depth To).

4 Single drillhole with glinking enabled showing local spatial positive correlation between Al and Fe at depth Regression through the Origin New mode added to Show Regression Lines in scatter plots, pairwise scatter plots or a scatter plot matrix. To display regression lines through the origin (RTO) hold down the Shift key and release before cycling through the display options. Scatter plot showing regression lines through origin and tooltip information

5 Enhancements File Menu Open files using drag and drop from Windows Explorer Browse to Folder option Drillhole and stereonet demonstration data files Open XRF Data Copy Error vs Concentration plots using Ctrl-C/Ctrl-V Defaults to Professional XRF detection limits Improved handling of 0 data columns Data Menu Column Properties Special columns automatically assigned as text or numeric instead of non-plot Analysis Menu Summary Statistics Percentiles added 3, 87, 90 & 93 (match Attribute Manager bin ranges) Lambda (Box Cox) No Trim & 2% Trim values Tukey Outlier & Far Outlier Threshold, Min & Max Regular Whisker values PCA, DPA & CLR - Improved overwrite column handling with option to add suffix Graph Menu Downhole Plot & Line Plots Set gap threshold for drawing lines Show/Hide lines Mineral Nodes Updated alteration assemblages XY Plot R2 values added to standard Regression tooltip

6 Split Probability Plots Configure render settings Map Menu Google Earth KMZ Export Option to add ID column as name/placemark Attribute Map Reverse sizing ramp options Ranked Variable Map Reverse sizing ramp options Render by increasing or decreasing values Gridding Configure render settings added to Attribute Map Overlay Diagrams, Calculations and Spider Plots Select aliased variable to use when multiple are present Edit diagrams using preferred XML editor Provided Diagrams: Frost & Frost, 2008 Alkalinity Index vs SiO2 Aluminum Saturation Index vs SiO2 IOCG Alteration Discrimination Diagram IUGS Classification Diagrams Templates Improved missing variable reporting and handling

7 General iogas version displayed in application titlebar Workflow Analysis Program Upgrade to Java 8 and support for Access and SQL Server drivers Installer signed with SHA-2 Certificate For more information about the new features in iogas 6.2 please refer to the Help menu.