comp.lang.idl-pvwave archive: archive » INT

Home » Public Forums » archive » INT_TABULATED Errors

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

INT_TABULATED Errors [message #18657]

Fri, 21 January 2000 00:00

Andy Loughe
Messages: 174
Registered: November 1995

Senior Member

From the manual...
CAUTION: Data that is highly oscillatory requires a sufficient
number of samples for an accurate integral approximation.

I guess this CAUTION is to be taken seriously...
my data points don't seem so "oscillatory".

; Compute the area under the curve using INT_TABULATED
;
; Example 1
x = [0.0, 0.3333, 0.985, 1.0]
y = [0.0, 0.529, 0.894, 1.0]
plot, x, y, psym=-2, title='Example 1'
print, ' Too small ==> ', INT_TABULATED(x, y)
;
; Example 2
x = [0.0, 0.10, 0.79, 1.0]
y = [0.0, 0.67, 0.96, 1.0]
plot, x, y, psym=-2, title='Example 2'
print, ' Too large ==> ', INT_TABULATED(x, y)

We are now giving POLY_AREA a try!

--------
Andrew F. Loughe email:loughe@fsl.noaa.gov phone:303-497-6211

Report message to a moderator

Previous Topic:	contour plot at max z of surface in obj. graphics
Next Topic:	Re: xyz triplet array to a "flat" 2D array?

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 12:29:31 PDT 2025

Total time taken to generate the page: 0.40095 seconds