In cartography, a contour line (often just called a ‘contour’) joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines. In cartography, a contour line (often just called a ‘contour’) joins points of equal elevation (height) above a given level, such as mean sea level. A contour map is a map illustrated with contour lines, for example a topographic map, which thus shows valleys and hills, and the steepness of slopes. The contour interval of a contour map is the difference in elevation between successive contour lines. to the the program. It will take a few seconds for the ArcMap to start. You should see the logo while the program in loading. Next, click on the appropriate data for your project. Depending on your site, click on the the appropriate geodatabase file. In this case, we are working a map of Site #1. Click the site1.mdb file and the following window will appear: This is the feature class containing elevation data. Check to make sure height field is the field corresponding to elevation data. To change the contour interval and the symbology of the contour map Right-Click on TIN (in table of contents) and select properties and click To change from a color-code surface map to a contour map, Right-Click again on TIN (in table of contents) and select properties and click (in this example I have changed the contour line to light blue and the index line to a darker blue with both lines having a line weight of 1.0) and then click To finish your map you should insert labels for the contour index lines, add a North arrow, add a scale, and add labels for mahor streets and buildings. Source.

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