![]() ![]() In this section we will look at the reverse process - how to determine scaled measurements when given actual dimensions, and draw an accurate two dimensional map. We have learnt how to determine actual measurements when given a map and a scale. Drawing a scaled map when given real (actual) dimensions (EMG4V) ![]() A disadvantage to using the bar scale is that we have to measure the length of one segment and measure the distance on the map, and our calculations can be more complicated because we have to calculate how many segments fit into the distance measured on the map. This is an advantage to using the bar scale.Īn advantage of the number scale is that we only have to measure one distance (we don't have to measure the length of one bar segment) and our calculations are usually fairly simple as a result. If we resize a map that has a bar scale on it, the size of the bar scale will be resized with the map, and it will therefore remain accurate. This is a disadvantage to using the number scale. Maps that use the number scale, it is important to know that the scale changes with the map. The number scale is expressed as a ratio like \(\text\) = width of map) so the answers to any scale calculations will now be wrong. But I didn't mean the annotation toolbar is missing, I meant the scale bar. TP gives me TP (CONTENT), which some sort of content window that is empty. The two kinds of scale we will be working with in this chapter are the number scale and the bar scale. Type 'TP' at the command line, then choose the Annotation tab. ![]() 6.3 Maps, directions, seating and floor plansĦ.2 Number and bar scales (EMG4Q) Introduction to number and bar scales (EMG4R) ![]()
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