Cartography and Scale Flashcards
Types of Spatial (quantitative) Scale?
- ) Representational
2. ) Problem scale
Types of Qualitative Scales?
- ) Functional
2. ) Internal/external
Spatial scale
Necessary relationship with size of the space
Representationl or Cartographic scale:
Uses a representational fraction!
Representational fraction=
Distance on map:Distance in Reality ex.) 1:250,000 1cm on map= 250,000 cm in reality.
A large scale map has a relatively —– space mapped
SMALL
A small scale map has a relatively —- space mapped
LARGE
The larger the cartograph scale is
The less of earths surface is mapped.
Problem Scale
Related to the spatial extent of some problem or phenomenom.
With problem scale the relationship between the size of the space in reality and the size of the scale used to describe reality is DIRECT. If a problem covers a large extent or a large part of the earths surfaces, it is reffered to as a large-scale problem. On the other hand is a problem covers a small extent of the earths surface it is reffered to as a small-scale problem.
Problem covers large space=
Large scale problem
Problem covers small space=
Small scale probelm
Different types of Functional Scales:
Internal
External
Functional scale
How different functions or qualities, vary across or with space. (Urban VS rural)
A functional scale may or may not have a relationship with spatial extent.
Variations may be representational or real.
Internal Functional Scale:
How a single function varies as spatial extent varies. ex.) Conservation biologists use internal functional scale to describe the spatial extent associate with the interactions of different types of plants and animals.
External Functional Scale:
Refers to how multiple functions share space. ex.) Urban vs Rural. many ways one can distinguish between a rural and urban setting, one way is by population densities.
