Define volume report format
This function allows you to control the presentation of volume reports. You define a report format which can then be used for future reports.
To run this function: Choose Surfaces > Volumes > Define string file report, or...
Different materials in the string files can be reported separately and each material may be broken down into a number of classes. The output can contain subtotals, cumulative totals and a ratio between ore and waste, or contaminated and uncontaminated material. You can also compute volumes within a defined boundary where the waste or uncontaminated material is not a previously defined material. The string files which represent the volumes to be computed may contain either closed string segments, or discrete points. The latter is a commonly used to represent block centroid data from block modelling systems. Each discrete point will represent a fixed area and therefore a volume.
The assay values of minerals or contaminants to be reported must be in description fields of the volume string files.
Name of the format file to use
Enter the name of the format file in which to store the report description. You do not need to enter an extension to the file name as `.fmt' is assumed.
Although the format file is in ASCII format, it is not wise to edit it using an ASCII editor.
A future version of STRING FILE REPORTS will include a Volume Report Format editor.
Complete the STRING FILE VOLUME REPORTS form and choose Apply to display the DEFINE VOLUME REPORT FORMAT form.
Define the report header lines
You may enter four lines of information to be displayed at the top of each report. This may include such details as the project name, what the report is describing etc. It is not compulsory to use any or all of the report header lines. When you have entered the appropriate report header information, choose Apply.
Complete the DEFINE VOLUME REPORT FORMAT form and choose Apply to display the DEFINE ASSAYS REQUIRED FOR THE REPORT form.
Number of assays
Enter the number of assays of minerals or contaminants to be reported. Up to 15 assays may be reported.
Assay Name
Enter the name for each assay to appear in the report.
String File Field
Enter the descriptor field containing the assays to be reported.
Master assay
Enter the main assay item to which the classification ranges are to be applied. All other mineral or contaminant values will be calculated in accordance with the master assay value.
Complete the DEFINE ASSAYS REQUIRED FOR THE REPORT form and choose Apply to display the DEFINE A VOLUME REPORT LINE form.
You must complete this form for each line of your report.
Directive
You must enter a `keyword' that defines the report structure.
All directives except END need to be named. Enter a name in the Material name field.
The valid keywords are:
- MATERIAL, this indicates you are about to define a material in terms of a string number range within the volume string files. If you enter the MATERIAL keyword then you will need to enter values for the other fields on the form: String range, No. of Classes, (O)re (W)aste or (V)oid, Breakdown by (S)tring or se(G)ment and Specific gravity.
- BOUNDARY, this indicates that this report will contain a waste volume which is defined by a boundary string stored in a separate string file. The reported waste volume will be the difference between the volume contained within the boundary and all other MATERIAL defined prior to the BOUNDARY directive. You will need to enter a value for the Specific Gravity field.
- SUBTOT, this indicates a position in the report where a subtotal of all tonnes and grades, or contaminant levels, since either the beginning of the report or the last SUBTOT directive are to be printed.
- CUMTOT, this indicates a position in the report where a running total of all tonnes and grades, or contaminant levels, since the beginning of the report are to be printed.
- RATIO, this indicates that a ratio of waste or ore types is to be printed. The classification of materials to be ore or waste is defined later on this form.
- END, this terminates the report format definition.
Material name
Enter a name describing the material, total or ratio that you are defining on this line of the report. For example:
for MATERIAL Low Grade Ore, or Contaminated Material for SUBTOT Total of all Seams for CUMTOT TOTAL - All Material for RATIO Waste/Ore ratio
You must enter a name for all directives except END.
String range
Enter the range of string numbers in the volume string files which represent this material.
This option only applies to MATERIAL directives.
No. of Classes
Enter the number of mineral or contaminant level grade classes the volume report for this material is to be broken down.
This applies to MATERIAL directives only.
If you enter a number greater than one, you will be asked to define the classes upon completion of this form. Up to 100 classes may be entered.
(O)re (W)aste or (V)oid
This defines the type of material on which you are reporting and is only applicable to MATERIAL directives.
Allowable values are:
- O, ore or contaminated material
- W, waste or uncontaminated material
- V, void or cavity.
Separate totals are maintained for ore and waste materials to allow calculation of ratios. Void volumes are excluded from these calculations. All material defined by a BOUNDARY directive is classified as `W'aste or uncontaminated material.
Breakdown by (S)tring or se(G)ment
You may want to report tonnes and grades by individual closed segments or by individual strings.
Allowable values are:
- S, string
- G, segment
This only applies to MATERIAL directives.
Specific gravity
Enter the specific gravity of the material being defined. The value entered here may be:
- a constant e.g. 2.1
- z, this means to take the specific gravity value from the z field of the string files being reported.
- Dn, this means take the specific gravity from the nominated description field of the string files being reported e.g. D3 being the third descriptor field.
Hint:If specific gravity is variable, it is not recommended to store these data in the Z field. The Z field should be reserved for coordinate information only. Variable specific gravity can and should be stored in a description field.
This option applies to MATERIAL and BOUNDARY directives.
If more than one class was entered, complete the DEFINE A VOLUME REPORT LINE form and choose Apply to display the DEFINE MATERIAL CLASSES form.
Material name
Display only.
This is the name of the material to which the classes are to be applied.
No. of classes
Display only.
This displays the number of classes that you must define.
Class Name
For each class you must enter the name or description of the class which will appear in the report. For example, `Low grade' or `0.0 - 20.0 ppm'.
>= Lower Limit
Enter the lower limit of the class. Any values greater than or equal to this value and less than the upper limit will be reported in this class.
< Upper Limit
Enter the upper limit of the class. Any values that fall outside these classes will not be included in the report.
Complete the DEFINE MATERIAL CLASSES form and choose Apply to display the DEFINE A VOLUME REPORT LINE form.
The DEFINE A VOLUME REPORT LINE form will continue to be displayed until you choose Cancel or type in a Directive of `END'.
When you have completed the report format, and entered a Directive of `END', a message confirming creation of the format file will be displayed.
The format definition will be stored in an ASCII file with a `.fmt' file extension. An example of a format file is:
Header line 1 =ALLIGATOR GOLD MINES Header line 2 =EUREKA MINE Header line 3 = Header line 4 = Number of assays =1 , Master assay =1 , Max assays = 15 Assay id = Gold , Assay field =D1 Directive =MATERIAL Material ID =Oxide String range =1,4 Number of classes =1 Type =O Breakdown =S Specific gravity =2.3 Oxide ,0 ,100 Directive =MATERIAL Material ID =Transition String range =11,14 Number of classes =1 Type =O Breakdown =S Specific gravity =2.4 Trans ,0 ,100 Directive =MATERIAL Material ID =sulfide String range =21,24 Number of classes =1 Type =O Breakdown =S Specific gravity =2.5 sulphide ,0 ,100 Directive =SUBTOT Material ID =TOTAL ore END |
As this file is in ASCII format, it may be edited, but care should be taken that you do not change the structure of the file.