surpac Interpolator

Prior to proceeding with this tutorial, you should have: 1. Installed Surpac v6.0 or later. 2. A good understanding of basic Surpac concepts. 3. A good understanding of Surpac Block Modelling concepts, especially the estimation process for ordinary kriging. 4. A good understanding of geostatistical concepts. If you do not have all of these, it is highly recommended that you work through the examples in the Introduction to Surpac, Block Modelling, and Geostatistics tutorials.

Interpolator in Surpac 6.0 August 2007 www.gemcomsoftware.com Copyright © 2007 Gemcom Software International Inc (Gemcom) This software and documentation is proprietary to Gemcom and, except where expressly provided otherwise, does not form part of any contract Changes may be made in products or services at any time without notice Gemcom publishes this documentation for the sole use of Gemcom licensees Without written permission you may not sell, reproduce, store in a retrieval system, or transmit any part of the documentation For such permission, or to obtain extra copies please contact your local Gemcom office or visit www.gemcomsoftware.com While every precaution has been taken in the preparation of this manual, we assume no responsibility for errors or omissions Neither is any liability assumed for damage resulting from the use of the information contained herein Gemcom Software International Inc Gemcom, the Gemcom logo, combinations thereof, and Whittle, Surpac, GEMS, Minex, Gemcom InSite and PCBC are trademarks of Gemcom Software International Inc or its wholly-owned subsidiaries Contributors Rowdy Bristol Phil Jackson Kiran Kumar Product Gemcom Surpac 6.0 Table of Contents Introduction Requirements Objectives Workflow Setting the Work Directory Understanding Interpolator Concepts Reviewing Information in the Online Help Before Running Interpolator Viewing Data Setup 12 Parameter Validation 14 Running Interpolator 15 Running Interpolator 15 Viewing Output 17 Summary 20 Page of Introduction Interpolator is a module which provides advanced geostatistical functionality such as multi-element, multizone estimation, as well as kriging neighbourhood analysis This document is designed to help you to understand the basic concepts of Interpolator, as well as providing a set of steps to perform an Interpolator run More detailed training information is available within the software and from your local Surpac Minex Group Support Office When the software has been installed you can see additional training resources and help documentation in the Help menu Visit www.surpac.com to locate your nearest Support Office Requirements Prior to proceeding with this tutorial, you should have: Installed Surpac v6.0 or later A good understanding of basic Surpac concepts A good understanding of Surpac Block Modelling concepts, especially the estimation process for ordinary kriging A good understanding of geostatistical concepts If you not have all of these, it is highly recommended that you work through the examples in the Introduction to Surpac, Block Modelling, and Geostatistics tutorials Objectives By working through this document, you should be able to: • Understand Interpolator concepts • View a sample dataset associated with an Interpolator run • Setup, modify, and validate Interpolator parameters • Perform an Interpolator run • View output values from Interpolator Workflow Create string files with data values for each zone Create block model Create block model constraints for each zone Create *.ipar parameter files Validate input parameters Run Interpolator Review output Page of Setting the Work Directory Workflow Setting the Work Directory A work directory is the default directory for saving Surpac files Files used in this tutorial are stored in the folder: \demo_data\tutorials\interpolator where is the directory in which Surpac was installed In the Surpac Navigator, right-click the interpolator folder From the popup menu, select Set as work directory The name of the work directory is displayed in the title bar of the Surpac window Page of Understanding Interpolator Concepts Reviewing Information in the Online Help Understanding Interpolator Concepts Overview This chapter describes how to use the online help to review conceptual information about Interpolator Requirements Prior to performing the exercises in this chapter, you should: • • Have installed Surpac v6.0 or later from the CD Have the Help Viewer installed Reviewing Information in the Online Help Start Surpac Choose Help > Table of Contents From the Table of Contents choose Block Model > Interpolator Choose Interpolator > Overview and review the information presented Page of Understanding Interpolator Concepts Reviewing Information in the Online Help Choose Interpolator > Setup and review the information presented On the Setup page, scroll down to the links detailing each of the tabs on the Interpolator form: Click each of these links, and review the information on each page Click each of the remaining Interpolator items in the Table of Contents, and review the information on each page Summary You should now understand the concepts and basic functionality of Interpolator Page of Before Running Interpolator Viewing Data Before Running Interpolator Overview This chapter will describe viewing the data in this tutorial, as well as the setup and validation steps that should be performed prior to running Interpolator Requirements Prior to performing the exercises in this chapter, you should be familiar with the Interpolator concepts as detailed in the online help Viewing Data Set the work directory to the location of the dataset, such as: \demo_data\tutorials\interpolator where is the directory in which Surpac was installed Open sanitised.mdl Right-click in the empty space at the top of the Surpac interface Select Profiles > Block model as shown Page of Before Running Interpolator Viewing Data Choose Display > Display block model Enter the information as shown, and then click Apply Open ore_zone1.con You will see the blocks falling inside this constraint Open ore_comp_int_zone1.str Display the string file data as markers 10 Click the icon to turn block model faces off Page of Before Running Interpolator Viewing Data You will see the composites that will be used to estimate blocks within this constraint 11 12 Click the icon to turn block model faces back on Choose Constraints > Remove all graphical constraints The entire model is redisplayed Page 10 of 10 Before Running Interpolator Viewing Data Repeat all of the previous steps with each of the constraints to familiarise yourself with each constraint and data set Run String file Constraint ore_comp_int_zone1.str ore_zone1.con ore_comp_int_zone2.str ore_zone2.con ore_comp_int_zone3.str ore_zone3.con ore_comp_int_zone4.str ore_zone4.con ore_comp_int_zone5.str ore_zone5.con Page 11 of 11 Before Running Interpolator Setup Setup Choose Interpolator > Setup Enter the information as shown, and then click Apply: Note: Interpolator requires the name of a file with a *.ipar extension, which contains all information required for an Interpolator “run” In this case, we are telling Interpolator to use the existing file sanitised.ipar, which contains a set of information for this data set We will modify a few parameters, which Setup will save to the output file modified.ipar You may use the same name for the input and output files, if you want to overwrite the original file with some new data The *.ipar files are in text format, and can be viewed with any text editor However, you should only modify them through Interpolator, not a text editor On the next form, click each of the tabs and use the scroll bar at the bottom to review the information For this example, we will change the descretisation parameters from X: Y: Z: 4 to: X: Y: Z: Click the Interpolation Parameters tab Page 12 of 12 Before Running Interpolator Setup Notice that the descretisation parameters are set to: X: Y: and Z: Click in each of the fields, and modify them as shown: When you have made the changes, click Apply Note: This is done merely as an exercise to demonstrate how changes to the parameters can be made and stored in a new *.ipar file In this case, modified.ipar will contain the new values for descretisation points in the Y and Z dimensions, as well as all other data previously stored in sanitised.ipar Page 13 of 13 Before Running Interpolator Parameter Validation Parameter Validation Choose Interpolator > Validate Enter the information as shown, and then click Apply The software will verify that all information in modified.ipar is valid When completed, the message window will display: Check modified.xls for validation results Open the file in Excel to review the results If any errors are found, you will need to correct them before continuing In this case, all information is correct, so there is no need to anything Note: You must close the spreadsheet before performing any subsequent validation checks on this *.ipar file Summary You should now understand the type of data required for running Interpolator, as well as the setup and validation steps that should be performed prior to running Interpolator Page 14 of 14 Running Interpolator Running Interpolator Running Interpolator Overview This chapter will describe how to perform an Interpolator run, as well as viewing the output Requirements Prior to performing the exercises in this chapter, you should be familiar with viewing the data in this tutorial, as well as the setup and validation steps that should be performed prior to running Interpolator Running Interpolator Open sanitised.mdl Right-click in the empty space at the top of the Surpac interface Select Profiles > Block model as shown Choose Interpolator > Run Page 15 of 15 Running Interpolator Enter the information as shown, and then click Apply Note: Running Interpolator By using the same name for the input and output files, parameters in the original file may be updated On the next form, review the information, and then click Apply The software will now execute each of the “runs”, as defined by the parameters Once it is completed, you will see a message in the message window indicating that the model has been saved: Model c:/surpacminex/surpac_601/demo_data/tutorials/interpolator/sanitised.mdl saved and the block model will be closed Page 16 of 16 Running Interpolator Viewing Output Viewing Output You may optionally review the output by displaying the model and colouring it by an estimated attribute within one or more constraints Open sanitised.mdl Choose Display > Display block model Enter the information as shown, and then click Apply Open ore_zone1.con (or any other constraint) You will see the blocks falling inside this constraint Page 17 of 17 Running Interpolator Viewing Output Next, you will colour the model by the attribute au_ok Choose Display > Colour model by attribute Select the Attribute to colour by as au_ok, and then click the Scan button Enter the Ranges for colour selection as 0,5,0.5, and then press the Tab key to refresh the ranges When you have made these changes, click Apply You will see the model coloured by the values in the attribute au_ok: Page 18 of 18 Running Interpolator Viewing Output Additionally, you may review values for a block Choose Attributes > View attributes for one block Click any block The attribute values for the block are displayed 10 11 12 When you are finished reviewing the data, click Apply Choose Block model > Close Select Save and exit, and then click Apply Summary You should now understand how to perform an Interpolator run, as well as view the output Page 19 of 19 Running Interpolator Viewing Output Summary Upon completion of this tutorial you should: • know how Interpolator works • understand how to set up and validate input parameters in a *.ipar file • perform an interpolator run • review output attribute values This document is designed to help you start using the Interpolator module It is not designed as a training aid and should not be considered as a substitute for training Your local support office will also have access to additional training aids and can help you with advice on your particular training needs Visit www.surpac.com to locate your nearest Support Office Page 20 of 20