Next: 13.5.3 Changing the Number
Up: 13.5 Making Histograms
Previous: 13.5.1 Drawing the Graph
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:
- Select X Axis... from the graph window Options menu.
NExS displays the X Axis Options dialog box.
- Click off the selection button labeled Auto Scale to
disable the option.
- Enter 2000 in the Min entry box and 7000 in the Max
entry box.
- Enter 10 in the Major entry box to set the number of
bins.
- 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.
Figure 13.10: Histogram 2
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