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Re: Appending Numbers to Strings in IDL [message #48989 is a reply to message #48988]

Mon, 05 June 2006 14:57

Paul Van Delst[1]
Messages: 1157
Registered: April 2002

Senior Member

toddbranch wrote:
> Hi everyone,
>
> I'm new to IDL, and have only been using it for two weeks. I bought
> Liam Gumley's book and it has been quite helpful so far. The program
> I'm writing requires me to identify different objects within an image.
> Since there may be more than one, I append a variable number to the end
> of the file name string to differentiate between objects.
>
> I know that you can append numbers to a string like this:
> string+string(variable)
>
> But, that leaves a lot of whitespace in front of the number. Is there
> a way to eliminate this whitespace?
> I want it to work like this:
> string+string(variable)=stringvariable, not string variable

you can do

stringvar+strtrim(variable,2)

with variable = 1, 2, 3, 4,...... to give you something like

blah1
blah2
blah3
...
blah10
...
blah127
...etc

or

stringvar+string(variable,format='(i4.4)')

to do stuff like

blah0001
blah0002
blah0003
...
blah0010
...
blah0127
...etc

In the latter case, variable must be < 10000.

paulv

--
Paul van Delst Ride lots.
CIMSS @ NOAA/NCEP/EMC Eddy Merckx
Ph: (301)763-8000 x7748
Fax:(301)763-8545

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[Message index]

		Re: Appending Numbers to Strings in IDL By: Jo Klein on Tue, 06 June 2006 10:08
		Re: Appending Numbers to Strings in IDL By: toddbranch on Mon, 05 June 2006 15:06
		Re: Appending Numbers to Strings in IDL By: Paul Van Delst[1] on Mon, 05 June 2006 14:59
		Re: Appending Numbers to Strings in IDL By: Paul Van Delst[1] on Mon, 05 June 2006 14:57
		Re: Appending Numbers to Strings in IDL By: steve on Mon, 05 June 2006 14:54

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