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SOUTH AFRICAN QUALIFICATIONS AUTHORITY 
REGISTERED UNIT STANDARD: 

Understand concepts and theory of Cartographic modeling 
SAQA US ID UNIT STANDARD TITLE
258738  Understand concepts and theory of Cartographic modeling 
ORIGINATOR
SGB Geographical Information Sciences 
PRIMARY OR DELEGATED QUALITY ASSURANCE FUNCTIONARY
-  
FIELD SUBFIELD
Field 12 - Physical Planning and Construction Physical Planning, Design and Management 
ABET BAND UNIT STANDARD TYPE PRE-2009 NQF LEVEL NQF LEVEL CREDITS
Undefined  Regular  Level 6  Level TBA: Pre-2009 was L6  12 
REGISTRATION STATUS REGISTRATION START DATE REGISTRATION END DATE SAQA DECISION NUMBER
Reregistered  2015-07-01  2018-06-30  SAQA 10105/14 
LAST DATE FOR ENROLMENT LAST DATE FOR ACHIEVEMENT
2019-06-30   2022-06-30  

In all of the tables in this document, both the pre-2009 NQF Level and the NQF Level is shown. In the text (purpose statements, qualification rules, etc), any references to NQF Levels are to the pre-2009 levels unless specifically stated otherwise.  

This unit standard does not replace any other unit standard and is not replaced by any other unit standard. 

PURPOSE OF THE UNIT STANDARD 
This unit standard has been developed for the GIS occupational area and is intended for persons who aim to achieve career advancement by gaining GIS skills leading to qualification based on unit standards. A person who has successfully completed this unit standard will have an understanding of how to process and or create simple cartographic models.

A person credited with this unit standard is able to:
  • Understand the concept of cartographic modeling.
  • Interpret and execute an existing, simple cartographic model.
  • Understand and explain the stages in the development of a cartographic model.
  • Develop a cartographic model. 

  • LEARNING ASSUMED TO BE IN PLACE AND RECOGNITION OF PRIOR LEARNING 
    The credit calculation is based on the assumption that learners are already competent in the following:
  • Mathematical Literacy at NQF Level 5.
  • Communication at NQF Level 5.
  • Perform basic spatial and hybrid queries. 

  • UNIT STANDARD RANGE 
    Specific range statements are provided in the body of the unit standard where they apply to particular specific outcomes or assessment criteria. 

    Specific Outcomes and Assessment Criteria: 

    SPECIFIC OUTCOME 1 
    Understand the concept of cartographic modeling within the context of a geographical information system (GIS). 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The terminology of cartographic models is understood and explained within the context of a GIS. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to model, cartographic model, input, output, operation and equation.
     

    ASSESSMENT CRITERION 2 
    Different cartographic modeling methodologies are understood and explained within the context of a GIS. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to Spiral, cascade/waterfall.
     

    ASSESSMENT CRITERION 3 
    Different types of inputs and outputs are understood and explained in relation to cartographic modeling. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to Vector data, raster data, alphanumerical data, and understanding that an output of one equation may be the input for another.
     

    ASSESSMENT CRITERION 4 
    Different types of operations and equations are understood and explained in relation to cartographic modeling. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to addition, subtraction, multiplication, division, buffering, overlays, intersection, union, XOR, clip, dissolve, merge, and alphanumeric query statements.
     

    ASSESSMENT CRITERION 5 
    The need for standardisation is understood and explained in relation to cartographic modeling. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to terminology, legends, symbology, operations and methodologies.
     

    SPECIFIC OUTCOME 2 
    Interpret and execute an existing, simple cartographic model within the context of a GIS. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    Commonly used symbology used in cartographic models is understood and explained within the context of GIS standards and specifications. 
    ASSESSMENT CRITERION RANGE 
    Tomlin's original model and any other model available to the student (E.g. IDRISI model, ESRI model, ERDAS model).
     

    ASSESSMENT CRITERION 2 
    The holistic process addressed by the cartographic model is understood and explained within the context of GIS requirements. 

    ASSESSMENT CRITERION 3 
    The individual equations, including their parameters, of simple cartographic models are understood and explained within the context of GIS requirements. 
    ASSESSMENT CRITERION RANGE 
    E.g. Buffer operations can be single or multiple and require a buffer distance.
     

    ASSESSMENT CRITERION 4 
    The error propagation through cartographic models is understood and explained within the context of GIS requirements. 

    ASSESSMENT CRITERION 5 
    The model is executed correctly and the validity of the result can be demonstrated under supervision. 
    ASSESSMENT CRITERION RANGE 
    Input, Operation, Output, Verification by inspection.
     

    SPECIFIC OUTCOME 3 
    Understand and explain the stages in the development of a cartographic model that will meet the requirements of a geographical information system (GIS). 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The problem to be addressed by a cartographic model is understood and explained in relation to the GISc analysis. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to analysis, conceptual model.
     

    ASSESSMENT CRITERION 2 
    The inputs to the cartographic model and their required parameters are identified and explained. 
    ASSESSMENT CRITERION RANGE 
    Parameters include but are not limited to geometric scale, resolution, accuracy, precision, associated alphanumerical data, data type, scale of measurement, area of interest.
     

    ASSESSMENT CRITERION 3 
    The expected outputs from the cartographic model are identified and explained as well as their desired parameters. 
    ASSESSMENT CRITERION RANGE 
    Parameters include but are not limited to geometric scale, resolution, accuracy, precision, associated alphanumerical data, data type, scale of measurement, area of interest.
     

    ASSESSMENT CRITERION 4 
    The computational processes to be used in the cartographic model are identified and explained as well as their required parameters. 

    SPECIFIC OUTCOME 4 
    Perform data conversions between different spatial data formats within a GI system environment. 

    ASSESSMENT CRITERIA
     

    ASSESSMENT CRITERION 1 
    The information needed to successfully use spatial data exchange formats are explained within a GI system environment. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to:
  • Where and how units are converted.
  • Where and how spatial reference systems are converted.
  • How layer and symbology information is converted or exchanged.
     

  • ASSESSMENT CRITERION 2 
    Different formats for exchanging spatial data are understood and explained within a GI system environment. 
    ASSESSMENT CRITERION RANGE 
    Including but not limited to:
  • ArcView SHP file set.
  • MapInfo file set.
  • ASCII data in the form of the Open GIS Consortium's Simple Feature Standard for SQL (SFS1).
     

  • ASSESSMENT CRITERION 3 
    Data is converted using different file formats within a GI system environment. 
    ASSESSMENT CRITERION RANGE 
    All of the formats listed above are to be used as both source and target in different conversions.
     

    ASSESSMENT CRITERION 4 
    Details of the conversion process are reported in metadata statements within a GI system environment. 


    UNIT STANDARD ACCREDITATION AND MODERATION OPTIONS 
  • Anyone assessing a learner against this unit standard must be registered as an assessor with the relevant ETQA.
  • Any institution offering learning that will enable achievement of this unit standard must be accredited as a provider through the relevant ETQA by SAQA.
  • Moderation of assessment will be overseen by the relevant ETQA according to the moderation guidelines and the agreed ETQA procedures. 

  • UNIT STANDARD ESSENTIAL EMBEDDED KNOWLEDGE 
    Essential embedded knowledge is dealt with under the specific outcomes section where "Demonstrate Knowledge and Understanding" is required. 

    UNIT STANDARD DEVELOPMENTAL OUTCOME 
    N/A 

    UNIT STANDARD LINKAGES 
    N/A 


    Critical Cross-field Outcomes (CCFO): 

    UNIT STANDARD CCFO IDENTIFYING 
    Solve problems. 

    UNIT STANDARD CCFO WORKING 
    Work effectively with others as a member of a team/group/organisation or community. 

    UNIT STANDARD CCFO ORGANISING 
    Organise and manage oneself and one`s activities responsibly and effectively. 

    UNIT STANDARD CCFO COLLECTING 
    Collect, organise and critically evaluate information. 

    UNIT STANDARD CCFO COMMUNICATING 
    Communicate effectively using visual, mathematics and language skills in the modes of oral and written presentations. 

    UNIT STANDARD CCFO SCIENCE 
    Use science and technology effectively and critically (showing responsibility towards the environment and health of others). 

    UNIT STANDARD CCFO DEMONSTRATING 
    Display an understanding of the world as a set of related systems. 

    UNIT STANDARD CCFO CONTRIBUTING 
    Contribute to the full development of each learner and the social and economic development of society at large. 

    UNIT STANDARD ASSESSOR CRITERIA 
    N/A 

    REREGISTRATION HISTORY 
    As per the SAQA Board decision/s at that time, this unit standard was Reregistered in 2012; 2015. 

    UNIT STANDARD NOTES 
    N/A 

    QUALIFICATIONS UTILISING THIS UNIT STANDARD: 
      ID QUALIFICATION TITLE PRE-2009 NQF LEVEL NQF LEVEL STATUS END DATE PRIMARY OR DELEGATED QA FUNCTIONARY
    Core  63689   Bachelor of Arts: Geographical Information Science  Level 6  Level TBA: Pre-2009 was L6  Reregistered  2018-06-30   
    Core  63711   Bachelor of Geographical Information Science (GISc)  Level 7  NQF Level 07  Reregistered  2018-06-30   


    PROVIDERS CURRENTLY ACCREDITED TO OFFER THIS UNIT STANDARD: 
    This information shows the current accreditations (i.e. those not past their accreditation end dates), and is the most complete record available to SAQA as of today. Some Primary or Delegated Quality Assurance Functionaries have a lag in their recording systems for provider accreditation, in turn leading to a lag in notifying SAQA of all the providers that they have accredited to offer qualifications and unit standards, as well as any extensions to accreditation end dates. The relevant Primary or Delegated Quality Assurance Functionary should be notified if a record appears to be missing from here.
     
    NONE 



    All qualifications and part qualifications registered on the National Qualifications Framework are public property. Thus the only payment that can be made for them is for service and reproduction. It is illegal to sell this material for profit. If the material is reproduced or quoted, the South African Qualifications Authority (SAQA) should be acknowledged as the source.