Category Archives: Geography Practicals/Lab and Statistical Techniques

Aspect of Map Projection

The aspect describes the mutual position of the axis of the earth and the axis of the projection. The axis of the earth (black) and the axis of a projection with transverse aspect (red) Axis of a Projection The axis … Continue reading

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Contours: An Overview

Contour –  Contour is an imaginary line on ground joining points of equal or constant elevations. contours are important to draw the topographical maps in which vertical distances are also shown using the contour lines. Contour interval: Vertical distance between any … Continue reading

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Thematic Maps and Thematic Mapping Techniques

A thematic map is a type of map specifically designed to “show a particular theme connected with a specific geographic area. Unlike reference maps, which tell us where something is, thematic maps tell us how something is. There are a number of visualization techniques and … Continue reading

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Isopleths and Isopleth Maps

An Isopleths is a line drawn on a map through all points having the same value of some measurable quantity. The following is a list of all the important isopleths encountered in operational meteorology. An isopleth is a line or curve of equal values. Constant Pressure Surface Most analysis and … Continue reading

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