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Improved plotting of DOUBLE data [message #15857]

Tue, 15 June 1999 00:00

Liam Gumley
Messages: 473
Registered: November 1994

Senior Member

There was a discussion here recently about the limitations of PLOT
because it converts it's arguments to single precision. I just stumbled
across the following interesting routines at the PV-WAVE website, which
seem to work fine under IDL5:

ftp://ftp.boulder.vni.com/pub/unsupported/wave_user/release/ plot_dbl.pro
ftp://ftp.boulder.vni.com/pub/unsupported/wave_user/release/ oplot_dbl.pro

For example, to show the limitations of PLOT in IDL5:

x = dindgen(10)
y = x*0.0001d + 1000d
plot, x, y, /ynozero, ytickformat='(f10.4)'
oplot, x, y + 0.0001d

Now try PLOT_DBL (which normalizes the data):

plot_dbl, x, y, /ynozero, ytickformat='(f10.4)'
oplot_dbl, x, y + 0.0001d

It seems to work reasonably well in the few examples I've tried.

Cheers,
Liam.

--
Liam E. Gumley
Space Science and Engineering Center, UW-Madison
http://cimss.ssec.wisc.edu/~gumley

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[Message index]

		Improved plotting of DOUBLE data By: Liam Gumley on Tue, 15 June 1999 00:00
		Re: Improved plotting of DOUBLE data By: luthi on Fri, 18 June 1999 00:00

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