Envisage : Analyse : Statistics : Advanced Statistics : General Setup
General Setup
General setup template
Enter the name of the template to save to. The current state of the General Setup section (that is, all colours and graph text sizes) can be saved to a template. Select the Save As button to save the template. Colours
Select colours for the graph elements, such as title text, axis annotations, axes labels, graphs (for example bars of a histogram), graph points, grid lines and text. Colour for text refers to the display of textual information other than title, annotation and labels. The colours will be selected from the current colour table. Graph text sizes
Enter the size for the graph text (graph title, condition title, axes titles and annotation titles). The font type used is ’SCALED’. The font size of textual information is 10 point. This can only be changed through the options under the Design > Text Edit submenu. Refer to the Font section (of the Envisage introduction) for more information on scaled fonts.
Data Elements
Data Elements template
Enter the name of the template to save to. The current state of the Data Elements section (all data types, attributes and conditions) can be saved to a template. Select the Save As button to save the template.
Specify Data to Include Data Type
Use the Data Type drop-down list to select the data type that you want to calculate statistics on, for example samples database, drillhole database, etc. Attributes
Click to edit the attributes for the chosen data type. Once selected, the Data Attributes panel displays. The options displayed through the Data Attributes panel will depend upon the selected data type. Select from the following data types to display the accompanying Data Attributes panel:
Samples Database
Drillhole Database
Map File
Block Model
Grid Model
Conditions
Click
to edit the conditions for the chosen data type. Once selected, the Data Conditions panel displays.
General local condition
This condition is used to limit whole records or blocks in a single database. In the example below, the condition AU1 gt AU5 will select records 2 and 4. A condition of AU1 gt 0 and AU5 gt 0 will select record 2 only. Record Number
AU1
AU5
1
0.0
0.1
2
0.2
0.1
3
0.0
0.3
4
0.3
0.0
Condition on all variables
This condition is used to limit certain values of variables. In databases or block models for example, missing values are often indicated with a value of -1 or -99. In block models, a missing value may occur because there are not enough nearby samples for grade estimation to produce an estimate in a particular block. In databases, a missing value may occur because an interval was not assayed. You want to exclude these values from the statistics as they are outliers and will significantly affect the statistics. The condition uses the symbol $v to represent all selected data variable names. For example, if the selected data variables are AU and AG and the condition is ’$v gt 0’, then all AU and AG values greater than 0 (zero) will be selected. If the condition is ’$v ne -1’, then all AU and AG values that are ’-1’ will be ignored (’-1’ is generally used for databases, ’-99’ for block models). The condition must be true for a value to be selected. Values for which the condition is false are considered missing or invalid. If the variable condition is left blank, then it is considered to be true and all values are considered to be valid. In the following example, ’-1’ indicates missing data. A variable condition of ’$v NE -1’ would result in records 1, 2, 4 and 5 being selected in a calculation of the average AU, and records 1, 3, 4 and 5 in the calculation of the average FE. For t he generation of scatter plots, however, records 2 and 3 will be ignored because they contain a missing value. This means that only (0.5, 0.2), (0.7, 0.2) and (0.3, 0.3) will be plotted. Record Number
AU
FE
1
0.5
0.2
2
0.4
-1
3
-1
0.1
4
0.7
0.2
5
0.3
0.3
Restricting by triangulation
The following drop-down lists allow you to use a triangulation to limit the dataset. Only those samples that fall in the specified triangulation will be used in the analysis. Select from the drop-down list the X, Y and Z coordinate field for each dataset. Note For composite databases, specify the mid point coordinates of the samples. For block models specify the centroid coordinates of the blocks to be used. Restricting by global conditions
Enter, or select from the drop-down list, the W tag and S tag variables to be used as a condition for multiple databases. The W tag is any variable that has a numeric value and the S tag is any variable that has a character value.
For example, a condition of ’ $w eq 2’ will select values of 2 for a specified W tag variable.
Global Conditions
Global Conditions
Global Conditions template
Enter, or select from the drop-down list, the name of the template to save to. The current state of the Data Elements section (that is, all data types, attributes and conditions) can be saved to a template. Select the Save As button to save the template. If the chosen template already exists, then you will need to confirm whether or not you want to overwrite it. Condition Title
Enter the condition title (a maximum size of 40 alphanumeric characters), for example ’Grade above 0.4’. The condition title will appear on the statistics/graphs below the plot title. Condition expression
Enter the expression (a maximum size of 132 alphanumeric characters), for example ’$w gt 0.4’. See Appendix B for a list of available operators/conditions. Tip
Use $w for the W tag variable and $s for the character tag variable to set the condition on multiple datasets. When a drillhole database is used to run advanced statistics it is not possible to limit the data by a condition in a field located in a different table. For example: Run a general stats in ASSAY:AU limit by GEOL:LITH field.
Bound Tri
Select this check box to use a triangulation to limit the dataset. Only those samples that fall in the specified triangulation will be used in the analysis. Tri Settings
Click
to edit the settings for the triangulation. The following panel displays.
Use this panel to select the triangulation that will be used to insert the points. Enter the triangulation name or select it from the drop-down list. The drop-down list contains all triangulation files found in the current working directory. Click Browse to select a triangulation file from a different location. Use the Pick From Screen button to select a triangulation directly from the screen.
Graph Type
The current state of the Graph Type section, that is, graph titles and attributes, can be saved in a nominated template. The template name can be manually entered or selected from the drop-down list. Use the Save As button when you are ready to save the template. If the chosen template already exists, then you will need to confirm whether or not you want to overwrite it. Type Select a graph type from the drop-down list.
Anova
Box Plot
Char Histogram
Cumulative
Export
General
Histogram
Joint
Line Plot
Multi Line
Multivariate
Log Normal Probability Plot
Pie Chart
PP Plot
QQ Plot
Scatter
Use the Entry listing to export the data that was used in the statistical analysis to a nominated file.
The Joint and Multivariate listings generate statistics rather than graphs. Refer to the Terminology section for more information. Title Enter a title for the graph. Attributes Configure the data attributes for the resulting graph in this column. Click graph.
to display the Attributes panel and configure the attributes for the associated
The options contained in the displayed panel are dependant upon the chosen graph type. Click on the listings below to display information on the displayed panels. Note This column is not applicable to the Joint, Multivariate and Ternary listings. Excel Attributes Use this column to configure the Excel attributes for the resulting graph. Click appropriate Excel Attributes panel for the graph displays.
to configure the attributes for the associated graph. Once selected, the
The options contained in the displayed Excel Attributes panel depend on the graph type chosen. Click on the listings below to display information on the displayed panels.
Box Plot
Char Histogram
Cumulative
General
Histogram
Line Plot
Multi Line
Log Normal Probability Plot
Pie Chart
PP Plot
QQ Plot
Scatter
Ternary
Note The Excel Attributes column is not applicable to the Anova, Export, Joint, and Multivariate listings.
Output Display
Output Display Statistics results file Enter, or select from the drop-down list, the name of the Statistics results file (.srf), or click Browse to select a file from another location. The format of the default file name is: __.srf
If the system encounters nay problems while running the statistics, the problem areas will be placed in a file with the same name as the results file and suffixed with an extension of .err. Display graphs Select this option to display the statistics/graphs. Display in Envisage Select this check box to display the statistics/graphs in Envisage. Each statistic/graph displays in its own window in the main Graph window (the Graph window has the same size as the current Primary Window). You can specify how many of these "sub-windows" you require. Display in Envisage Select this check box to display the statistics/graphs in Envisage. Each statistic/graph displays in its own window in the main Graph window (the Graph window has the same size as the current Primary Window). You can specify how many of these "sub-windows" you require. For example, if you enter ’4’ as the number of sub-windows for the X axis, and ’3’ as the number of sub-windows for the Y axis, you will get 12 subwindows. If there are more graphs/statistics than the specified number of sub-windows, you will be able to scroll (by page or by graph).
Diagram 1 - Sub-windows
Use the Zoom
and Pan
icons on the Graphics toolbar to zoom in on the graphs/statistics.
Display in Excel Select this check box to display the statistics/graphs in an Excel spreadsheet. The drop-down list displays all Excel files (.xls or .xlsx) files found in your current working directory, or you may click Browse to select a file from another location. Click Browse to select a file from another location. To create a new file, enter the file name and file extension. Do not display graphs Select this option if you don’t want to display the statistics/graphs after the statistics have been calculated. Select the Run statistics in a shell window check box to view the statistics as they are being calculated.
