setLayoutOverplot( 2 )
plot( 0, 'http://emfisis.physics.uiowa.edu/Flight/RBSP-A/L2/2012/10/22/rbsp-a_HFR-spectra_emfisis-L2_20121022_v1.2.8.cdf?HFR_Spectra' )
plot( 1, 'http://emfisis.physics.uiowa.edu/Flight/RBSP-A/L4/2012/10/22/rbsp-a_density_emfisis_20121022_v1.3.16.cdf?y' )
writeToPng('overplotDemo.png')