Prism User's Guide - CSAIL People - MIT

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Chapter 5. Vinalizing Data 81
The display window is the main part of the visualizer. It shows the data, using
a representation that you can choose from the Options menu. The default is text:
that is, the data is displayed as numbers or characters. Figure 19 is a text visualizer.
The display window is described in more detail in Section 5.3.2.
The File menu lets you save, update, or cancel the visualizer, see Section 5.3.3
for more information. The Ontions menu. among other things. lets you change
the way values are represented; see Section 5.3.4.
5.3.1 Using the Data Navigator in a Visualizer
The data navigator helps you move through the data being visualized. It has different
appearances, depending on the number of dimensions in your data. If your
data is a single scalar value, there is no data navigator.
For 1-dimensional arrays and parallel variables, the data navigator is the scroll
bar to the right of the data. The number to the right of the buttons for the File
and Options menus indicates the coordinate of the first element that is displayed.
The elevator in the scroll bar indicates the position of the displayed data relative
to the entire data set.
For 2-dimensional data, the data navigator is a rectangle in the shape of the data,
with the axes numbered. The white box inside the rectangle indicates the position
of the displayed data relative to the entire data set. You can either drag the box
or click at a spot in the rectangle. The box moves to that spot, and the data displayed
in the display window changes.
For 3-dimensional data, the data navigator consists of a rectangle and a slider,
each of which you can operate independently. The value to the right of the slider
indicates the coordinate of the third dimension. Changing the position of the bar
along the slider changes which 2-dimensional plane is displayed out of the
3-dimensional data.
For data with more than three dimensions, the data navigator adds a slider for
each additional dimension.
Changing the Axes
You can change the way the visualizer lays out your data by changing the numbers
that label the axes. Click in the box surrounding the number; it is
Version 1.2, March 1993
Copyright 0 1993 Thinking Machines Corporation