Geography what does scale mean

So why not show the same level of detail regardless of the map scale? There are two main reasons. The first reason is the noise level. Showing a lot of detail for features on a small scale map would cause a lot of confusion on the map. By reducing the amount of detail to show only the most important aspects of a feature, the map shows a clearer picture of the area.

Features that have a lot of detail are larger in file size. For a small scale map, loading several large layers will slow down the map production. Marina del Rey is an area of Los Angeles County that has one of the largest man-made small boat harbors in the United States. The representation of this harbor on maps of the area is dependent on the scale of the layer used. The layer showing the counties for the entire United States shown in the image below has a very generalized coast line for this area.

The is almost no detail in the coastline and the harbor is not represented at all. The map below shows the same coastline with a layer of all counties for the state of California. While still a small scale layer, the coastline shows more detail. The Marina del Rey harbor is represented by a small inlet on the map. In a large scale layer created to show just the County of Los Angeles boundary, the coastline for this area contains the highest level of detail, and a recognizable harbor is represented.

The examples of how the detail of a coastline changes depending on the scale of the layer helps to illustrate as well the importance of carefully considering the scale of any data used for mapping and spatial analysis. Small scale data inherently is less accurate and less detailed than large scale data. Using small scale data for large scale analysis can lead to gross errors. An example is the image to the left describes a scale as cm is equal to 15 kilometers. Changed Scale: Maps presenting a large amount of distance such as cm are difficult to describe.

A changed scale type acts as an alternative to a large ratio or a metric scale. Geographic analysis: A scale provides a geographical analysis to a specific surface feature on the map.

The analysis explains the significance of the land feature and the distance between landmarks. The geographical analysis confirms the land feature type as a mountain, building, or road. Accuracy: A scale presents an exact value of the object illustrated in the map.

Accurate landmark information provides landmark facts and figure. Examples are naming a street, building, mountain, or road. There are shapes that represent the distance, elevation, and the structure of a landmark. These are sharp-edged shapes that represent buildings and landmarks on the map. Each scale details the landmarks and geographical distance.

Map readers are no longer required to conduct a research to understand landmark geography. As an example, the map illustrates the total distance of the white sand beach, which is 8 kilometers long. The scale provides the actual name of the object to prevent confusion. An example is Mount Rainier, which has an elevation of 4, meters above sea level.

Large Scale Map: A large scale map makes every object or a landmark appear larger. Building and roads are clearly recognizable. The large scale map shows the name of malls, bridges, and the names of streets. Small Scale Map: A small scale map makes objects and landmarks appear smaller. The building, road, bridge, or any land feature is not recognizable.

A small scale map does not show the names of building, road, or bridge. Consumes Time: Creating scales in a map consumes time and effort. This process takes at least one month to install scales in a map. Requires Thorough Research: A scale needs a reliable information source about the actual name of the landmark. The purpose is to verify the name of the object and the distance between landmarks. Need Constant Updates: Scales requires constant updates.

Every landmark naturally changes over a time. By focusing on certain alternatives, a provincial policy dedicated to modifying individual behaviour retrofitting and renovating homes might benefit some groups more than others urban vs. On the other hand, recycling programs are considered substantially smaller scale problems that have both impacts and solutions that meet at a common scale. Furthermore, recycling has the additional benefit of allowing waste to re-enter the supply stream in the local economy.

Many geographers would suggest this use of the term scale problem scale could, and perhaps should, be replaced by the word size. As will be made evident below, problem scale is likely the more often used concept of scale than cartographic scale.

It has been used to describe differences in spatial extent as they extend to functional relationships that exist in both physical reality and policy outcomes. Problem scale , not unlike cartographic scale , takes advantage of common terms for changes in scale; these include, but are not limited to, small, medium, large, etc. While problem scale is also based on a relative relationship between the sizes of the space in which problems exist, the nature of this size physical extent —scale relationship is quite different than that between varying cartographic scale and the referent space.

Problem scale is based on a direct relationship positive correlation between scale and spatial extent larger problem, larger space; smaller problem, smaller space. Furthermore, unlike cartographic scale , changes in problem scale , or comparisons between two scales, are not quantifiable. While a local problem, as defined by problem scale, is obviously a problem occurring in a smaller space than a regional or global problem, it is difficult to calculate a ratio between the two because discrete boundaries are likely unavailable as they are on a map sheet.

In addition, the range of problems that can be described is so broad that for a single environmental issue there might be instances where the problem impacts a relatively small space and other instances where the space is vast.

Water quality and watershed health is an example. Functional scale refers to those situations where the general concept of problem scale i. Problem scale is relevant when comparing across types of phenomena or processes, functional scale should be applied in situations in which spatial extent is used to define a classification scheme for a process or related phenomena.

In situations where a process or function varies as spatial extent or scale varies, and scale is used to define that variability, functional scale is the relevant concept for describing the spatial component of that relationship. While spatial extent may be the determining factor in the variability of some process or phenomena, the nature of the relationship with space is determined by the internal characteristics of the phenomena.

It is for these relationships that the hierarchical nature of scale is most relevant. For a given phenomenon or process it is important to define its existence, or how it functions, across different scales, and whether an optimal scale or range of scales exists. However, we cannot assume that a provincial policy in Canada will necessarily impact a smaller space than a federal decision elsewhere.

These internally structured scaled relationships result in a subset of the functional scale that could be termed internal functional scale. Each of these classifications has subdivided space based on human interactions physical, cognitive, and perceptual with spaces of difference size. Relatively larger spaces require different mechanisms than smaller spaces.

A good example would be the search for a hidden object. If that object is hidden on a desk, the individual performing the search would likely move objects around on the cluttered desk in order to reveal hidden objects. So, a shared objective results in quite different behaviours in these two different sized spaces. We can extend this to political or policy environments; in Canada, provinces can only impact behaviours within their jurisdictions and with respect to topics covered by their mandate.

Within the biological sciences, particularly those branches interested in the complex interactions among species, there are also a variety of classifications of space based on the physical extent size of space. Ecology, conservation biology, and environmental management are disciplines in which scale is a prevalent theme, and almost always refers to the physical size of the space and types of interactions that occur in such spaces.