Tham khảo tài liệu 'mit guide to science and engineering communication 2ed - j paradis (mit 2002) episode 4', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Developing Graphics 65 Title---- Table 1. Concentrations of total particulate matter particulate calcium and particulate aluminum in the upper 100 m of the Beaufort Sea. Columnhead----------------- Sampling date 1989 Subhead Depth m Apr 10 20 30 May 10 20 30 Jun 9 19 29 Jul 9 19 Column 10 49 180 _ Total particulate matter 1 29 86 45 37 p g liter 38 61 61 44 60 25 83 116 I 72 78 105 19 30 68 46 44 37 50 132 108 Ỉ131 77 43 28 32 19 48 34 36 Row I 24 52 52 28 18 21 25 32 24 26 Particulate calcium y g liter Cell 25 91 Rowstub 50 100 I T5 Particulate aluminium jxg liter 10 25 i 50 I 100 Source Beulher and Jacyna 1992 Figure Tables are the simplest visual format and preserve the original data. Each cell represents a full sentence. Tables do not however convey visual patterns and may obscure significant events or trends. These forms whether developed from a database and computer graphics package such as Excel Microsoft Office SAS or Matlab or even roughed out on a pad of grid paper help you examine your data for important trends. They are thinking aids. Depending on the point you re making you could create a variety of graphs out of the data in Figure . Two of many possibilities are shown in Figure b. The simple line graph compares two trends in the data the semilogarithmic chart compares rates of change for two series of values that differ greatly in magnitude. Choosing the Type of Graphic Modern data graphics libraries offer an immense variety of options for analysis and presentation familiarize yourself with those that are used in 66 Developing
