6 PLOTTING YOUR SPECTRA

 Most of the IUEDAC software is designed to display results as plots on your graphics terminal. This section will give you an introduction to plotting using some simple IDL commands. Table 6.1 shows some simple plotting examples. You may plot   either vectors or functions of vectors. More information on plotting with IDL can be found in the IDL User's Guide.

 

 

Table 6.1: Plotting Examples

Expression	Definition
PLOT,y	Plots vector ``y'' vs. element number.
OPLOT,z	Overplots vector ``z'' vs. element number.
PLOT,x,y	Plots y vector vs. x vector.
OPLOT,x,z	Overplots z vector vs. x vector.
PLOT,wave,eps	Plots the error flags vs. wavelength.
!x.range=[1450,1600]	Set X axis plot range.
PLOT,wave,smooth(flux,15)	Plot smoothed data.
OPLOT,wave,flux,psym=2	Overplot smoothed flux with asterisks.
XYOUTS,1450,1e-13,'Carbon'	Writes 'Carbon' starting at x=1450 and y=1e-13.