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DADiSP
DADiSP (Data Analysis and Display, pronounced day-disp) is a numerical computing environment developed by DSP Development Corporation which allows one to display and manipulate data series, matrices and images with an interface similar to a spreadsheet. DADiSP is used in the study of signal processing,〔(【引用サイトリンク】url=http://www.texas-instruments.com/sc/docs/general/dsp/fest99/edu_trackpm/06nahvi.pdf )〕 numerical analysis, statistical and physiological data processing.〔(【引用サイトリンク】url=http://www.techbriefs.com/component/content/article/1265 )〕
== Interface ==
DADiSP is designed to perform technical data analysis in a spreadsheet like environment. However, unlike a typical business spreadsheet that operates on a table of cells each of which contain single scalar values, a DADiSP Worksheet consists of multiple interrelated windows where each window contains an entire series or multi-column matrix. A window not only stores the data, but also displays the data in several interactive forms, including 2D graphs, XYZ plots, 3D surfaces, images and numeric tables. Like a traditional spreadsheet, the windows are linked such that a change to the data in one window automatically updates all dependent windows both numerically and graphically.〔(【引用サイトリンク】url=http://www.dadisp.com/aboutdad.htm )〕〔(【引用サイトリンク】url=http://www.scientific-computing.com/scwjulaug03review_dadisp.html )〕
Users manipulate data primarily through windows. A DADiSP window is normally referred to by the letter "W" followed by a window number, as in "W1". For example, the formula W1: 1..3 assigns the series values to "W1". The formula W2: W1
*W1 sets a second window to compute the square of each value in "W1" such that "W2" will contain the series . If the values of "W1" change to , the values of "W2" automatically update to .
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