Assigning a file to “result” parameter of imarith

smp wrote on Oct 16, 2008

hi,

I created a file containg image names.
Now I want to assign this file to "result" parameter of imarith task.
If I do this as in the following script, I get the error:
--- Wrong number of elements in the operand lists

In my srcipt, 'flat_list' contains 5 fits images, while 'newname' contains 5 new names created through "for " loop.

procedure test (flat_list,....)
     :
     :
begin
   file newname
   int n
     :
   newname = "fl_bs"
     :
  delete(newfile)

   for(n=1;n<=5;n=n+1)
     {
       printf("fl_bs_%d.fits\n",n, >> newfile)
     }
      :
      :
     imarith(operand1=flat_list,op="-",operand2=zerocombine.output,result=newfile,verbose=no)
      :
      :
 end

 

any help?

regards

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Mike Fitzpatrick wrote on Oct 16, 2008

You want the output file (and input files for that matter) to be an @-file and not just the filename. Try using something like

imarith(......, result="@"//newfile, .....)

-Mike

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smp wrote on Oct 16, 2008

hi Mike,

"@"//newfile does not work

---

Mike Fitzpatrick wrote on Oct 16, 2008

Did you do it for the input files as well? Here's a working example of what I meant:

procedure zz()

begin
    file infile, outfile

    infile = "/tmp/in" ; delete (infile,ver-)
    outfile = "/tmp/out" ; delete (outfile,ver-)

    for (i=0; i < 5; i=i+1) {
        print ("dev$pix", >> infile)
        printf ("out%d\n", i, >> outfile)
    }

    imarith (operand1="@"//infile,op="-",operand2="@"//infile,
        result="@"//outfile)
end

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smp wrote on Oct 16, 2008

I think I did something wrong: I mean when I re-tried the

imarith(operand1=flat_list,op="-",operand2=zerocombine.output,result="@"//newfile,verbose=no)

It worked.
i.e. without using "@"//flat_list instead of flat_list for the input operand1 only.

But If I use "@"//flat_list for the input operand1, I get the error:
----cannot open the file.
Why is it so?

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Mike Fitzpatrick wrote on Oct 16, 2008

It probably means that either some file in the list doesn't exist, or that the list file itself can't be found.

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smp wrote on Oct 16, 2008

Now I want to do this:

In following segment of the procedure script,
newfile1 is a file which contains 5 image names.
newfile2 is a file which will contain image section [1:1084,*] of each of 5 images from file newfile1.
I am using imcopy task for this.
But I get the error :
Can't open file
if I do following:

           :
           :
           :
 for(n=1;n<=5;n=n+1)
   {
     printf("left_%d.fits\n", n ,  >> newfile2)          # creating new image names
   }

imcopy(input="@"//newfile1//"[1:1084,*]", output="@"//newfile2, v-)  # divide image into 2 halves

And I get following error:
Number of output and input images not same
if do the following:

           :
           :
           :
 for(n=1;n<=5;n=n+1)
   {
     printf("left_%d.fits\n", n ,  >> newfile2)          # creating new image names
   }

imcopy(input=newfile1//"[1:1084,*]", output="@"//newfile2, v-)  # divide image into 2 halves

what do I do?

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Last post on Oct 16, 2008