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13.5.2 Setting Maximum and Minimum Values

 

Now, the procedure described above is fine for a quick look at some data, but the bin intervals have odd values. For example, the first bin in the example above starts at 2,873 and ends at 3,270. Ideally, you would like to have regularly-spaced bins. This can be done by setting a maximum and minimum value in the Min and Min entry boxes of the X-Axis Options dialog box.

To set the Max and Min values:

  1. Select X Axis... from the graph window Options menu. NExS displays the X Axis Options dialog box.

  2. Click off the selection button labeled Auto Scale to disable the option.

  3. Enter 2000 in the Min entry box and 7000 in the Max entry box.

  4. Enter 10 in the Major entry box to set the number of bins.

  5. Click Apply to apply your choices, keep the dialog box open and redraw the histogram with bins beginning and ending at multiples of 500 as shown in Figure 13.10. The heights of some of the bars will change because the bin boundaries have moved and data items close to the bounds may move into an adjacent bin.

   figure4895
Figure 13.10: Histogram 2


next up previous contents index
Next: 13.5.3 Changing the Number Up: 13.5 Making Histograms Previous: 13.5.1 Drawing the Graph

NExS User's Guide, Version 1.4.5
Grey Trout Software
11 April 1999