What is a planimetric view?
A planimetric (plan) view, by contrast, looks as though every position on the ground is being viewed from directly above. Scale varies in perspective views. In plan views, scale is everywhere consistent (if we overlook variations in small-scale maps due to map projections).
What does a planimetric map look like?
Planimetric maps consist of lines drawn around both man-made and natural features. These features are extracted from aerial photography—anything visible in the imagery can be digitized. Typical items found in planimetric maps include: Building footprints.
What are the advantages of planimetric map?
Digital planimetric mapping provides accurate yet simple horizontal distance measurement. Applications are varied. They include planning for new projects as well as assessment of existing properties by government tax agencies, maintenance agreement by service companies, and cataloguing of assets by utility companies.
When would a planimetric map be useful?
These precise and accurate maps are used for urban planning, utilities planning, infrastructure management, taxation etc.
What are planimetric features?
Planimetric elements in geography are those features that are independent of elevation, such as roads, building footprints, and rivers and lakes. They are represented on two-dimensional maps as they are seen from the air, or in aerial photography.
What is the difference between a planimetric and topographic map?
Topographic Maps illustrate elevation with the use of contour lines and spot elevations. Planimetric Maps show features such as roads, buildings, water, fences, vegetation, bridges, railroads.
What is planimetric surface area?
Calculating Planimetric and Surface Area — in grid-based system, planimetric area is calculated by multiplying the number of cells times the area of an individual cell. Grid-Based Techniques for Characterizing Terrain Surface Area and Surface Line Length and Inclination.
What is the definition of topo?
a combining form meaning “place,” “local,” used in the formation of compound words: topography; topology.
What’s the difference between topology and topography?
Topography is a branch of geography concerned with the natural and constructed features on the surface of land, such as mountains, lakes, roads, and buildings. Topology is a branch of mathematics concerned with the distortion of shapes.
What is hypsometric Levelling?
Explanation: Hypsometer: (i) It is used to determine the altitude of station depends on the temperature at which water boils varies with the atmospheric pressure. (ii) Therefore, the method of levelling, which is used to estimate the height of mountain by observing the temperature at which water boil.
What is a Hypometric map?
Any map showing relief by means of contours, hachures, shading, tinting, or any other convention.
How do you describe topography?
Topography is a measurement of elevation, and slope is the percent change in that elevation over a certain distance. Topography may be measured with lines that connect points representing the same elevation; these are called topographic contours.
What are some examples of topography?
Topographical Features Examples include mountains, hills, valleys, lakes, oceans, rivers, cities, dams, and roads. Elevation – The elevation, or height, of mountains and other objects is recorded as part of topography. It is usually recorded in reference to sea level (the surface of the ocean).
What is topology geography?
Term. Topology is a branch of geometry concerned with the study of topological spaces. (The term topology is also used for a set of open sets used to define topological spaces). Most of the GIS (Geography Information System) layers use simple topology: point, line, polygon and region.
What is hypsometric in geography?
A hypsometric curve is essentially a graph that shows the proportion of land area that exists at various elevations by plotting relative area against relative height.
What is hypsometric map?
Hypsometric maps represent the elevation of the terrain with colours. The area between two neighbouring contour lines receives one specific tint. Hypsometric colours are most common in topographic maps at small scales, either applied as continuous gradients or intervals.