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An Isoline Map is a way of presenting numerical data cartographically. Why would we use an isoline map? Isoline maps help the reader to recognise patterns and relationships between the geography of an area and data that might have been collected on the ground, such as air temperature. An outline map of Greater London showing
An isoline is a line that joins places with the same or equal value. Isoline maps use isolines to show gradual change in continuous data—data that is found everywhere—about one feature of the Earth’s surface. Temperature and air pressure, for example, are found everywhere.
6 mar 2023 · Isoline maps are a valuable tool for visualizing and analyzing spatial data. By representing data as lines of equal value, isoline maps can reveal patterns and trends that may not be immediately visible in other types of maps or data representations.
18 lip 2024 · Isolines, also known as isarithms or level sets, are lines on a map that connect points with the same value of a particular variable. They help us visualize the distribution and patterns of a continuous field across a geographic area. Each isoline represents a constant value, maintaining uniformity throughout its length.
Map#1: Draw the 10 and 15 isolines. Map#3: Draw the 15 and 25 isolines. Map#5: Draw the 10,15, 20 and 25 isolines. Map#7: Draw the 20 feet, 40 feet and 60 feet contour lines. Map#8: Draw the 1024 mb isobar.
Isolines are lines which connect points with identical values inside a continuum. Isolines are virtual and abstract. Gradients are related to isolines and show the direction of the biggest value differences at a specific point. Gradients are always perpendicular to isolines. The map below shows an example of an isoline map.
Base your answers to questions 1 through 4 on the map below and on your knowledge of Earth Science. The map shows the depth of Lake Ontario. Isoline values indicate water depth, in feet.
