Synopsis
Unlike some other reproductions of classic texts (1) We have not used OCR(Optical Character Recognition), as this leads to bad quality books with introduced typos. (2) In books where there are images such as portraits, maps, sketches etc We have endeavoured to keep the quality of these images, so they represent accurately the original artefact. Although occasionally there may be certain imperfections with these old texts, we feel they deserve to be made available for future generations to enjoy.
Les informations fournies dans la section « Synopsis » peuvent faire référence à une autre édition de ce titre.
Présentation de l'éditeur
Graphic methods are rapidly superseding older methods because they are superior in two ways. They can accomplish the same results more quickly and with less chance of error than was formerly possible, and they often produce results which are very valuable and which have not been achieved at all by other means. As examples out of many that could be cited, note the almost incredible labor-saving features of the logarithmic chart whereby curves of many forms and any degree may be plotted as straight lines. The tabulation of data following parabolic laws, which formerly required days of laborious calculation, can now be done in a few minutes by a draftsman who does not even have to understand the mathematics of the process. Consider further what charts have done to visualize figures; relative quantities can be grasped through optical means with a comprehensiveness that is not even approached in any other manner, for to our instinctively accurate conceptions of magnitude as they appear to the eye a chart appeals with unique force. In the analysis of certain statistics the work that has been done with semi-logarithmic and trilinear diagrams has proved to be of the greatest value. Strange to say, nearly everyone who uses charts does so on a very limited acquaintance with the general subject. Most people are familiar with only a few kinds of charts, but there are many forms of which they could avail themselves and which offer extraordinary opportunities for saving their labor while multiplying their achievements. As an instance, the trilinear chart is almost unknown in the United States, yet its principles, and many applications thereof, were announced over twenty-five years ago. This book is the result of an effort to correct this g:eneral situation. The ultimate theory of charts is mathematical, and often deeply mathematical; but, without in the least attempting t
(Typographical errors above are due to OCR software and don't occur in the book.)
Les informations fournies dans la section « A propos du livre » peuvent faire référence à une autre édition de ce titre.
