Displaying Multiple Plots in a Single Window
To display all the plots that were created in the previous sections, enter the following IPLOT commands on the IDL command line:
IPLOT, noisy, VIEW_GRID=[2,2], VIEW_TITLE='Noisy Data Set'
IPLOT, filter, /VIEW_NEXT, VIEW_TITLE='Filter'
IPLOT, lowpass, /VIEW_NEXT, VIEW_TITLE='Low-Pass Filtered'
IPLOT, highpass, /VIEW_NEXT, VIEW_TITLE='High-Pass Filtered'
The resulting IPLOT window displays all four plots:

The following list describes the functionality of the IPLOT keywords used in the previous commands:
See IPLOT for complete information on these and other keywords.