comp.lang.idl-pvwave archive: archive » transforming an array where some values can't

Home » Public Forums » archive » transforming an array where some values can't

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

transforming an array where some values can't [message #10909]

Thu, 05 February 1998 00:00

bowler
Messages: 7
Registered: February 1998

Junior Member

I'm trying to write a function that will transform an arbitrary array by taking
hte natural log of every element in the array.

What I have is

function xform, input
temp = alog(input) ; I realize I could combine these 2 statements
return, temp ; but it makes debugging easier
end

Unfortunately, I can't guarentee that there won't be some elements that are
zero and thus invalid arguments to alog. what's the "most efficient" way to
take the alog of any element that's greater than 0 and set the value of ony
that are less than or equal to 0 to some small value (1e-7 for example)?

TIA,
Bruce

Report message to a moderator

[Message index]

transforming an array where some values can't

By: bowler on Thu, 05 February 1998 00:00

Previous Topic:	More teething problems
Next Topic:	Re: vector plots on maps

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Sat Oct 11 21:39:00 PDT 2025

Total time taken to generate the page: 3.67769 seconds