| Re: print to a variable [message #5279 is a reply to message #5278] |
Mon, 20 November 1995 00:00  |
dwu
Messages: 14
Registered: November 1995
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Junior Member |
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The question is how to print all the stuff into a string stead of screen.
such as when you type help, you will see
IDL> help
% At $MAIN$
Code area used: 0% (0/32768), Symbol area used: 0% (4/8192)
# local variables: 0, # parameters: 0
Compiled Procedures:
$MAIN$
Compiled Functions:
What I want is a string or array of string to store these information.
I have a method:
shell> idl > idl.log
IDL> (do the job, print, help,...)
all of these will not be seen on the screen, it will be in the
file idl.log
IDL> (test how many lines in the file use NOT EOF(unit) )
IDL> (replicate a string to an array of string)
IDL> (readf the file to the string array)
This method will print all the results, and not show them on the screen.
Now my question is how to print only one command result, and also
print everything to the screen simultaneously.
Mark Rivers (rivers@cars3.uchicago.edu) wrote:
: In article <48qip6$i99@post.gsfc.nasa.gov>, gfu@shark.gsfc.nasa.gov (Gary Fu) writes:
: >Is there a simple way to write outputs to a string variable that has
: >the same result as by using the 'print' statement ?
: >
: >I'm asking something like 'sprintf' as to 'printf' in C.
: >
: Use the string() function:
: IDL> a = !pi
: IDL> b = 'This is PI: ' + string(a)
: IDL> print, b
: This is PI: 3.14159
: Note that the string function takes a "format" keyword, just like print:
: IDL> print, string(!pi, format='(f10.2)')
: 3.14
: ____________________________________________________________
: Mark Rivers (312) 702-2279 (office)
: CARS (312) 702-9951 (secretary)
: Univ. of Chicago (312) 702-5454 (FAX)
: 5640 S. Ellis Ave. (708) 922-0499 (home)
: Chicago, IL 60637 rivers@cars3.uchicago.edu (Internet)
--
Ding Wu
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