[gradsusr] Writing to a world file as a text file

[Stephen Woodbridge]

Hi,

I have a script that creates images and I want to create a *.wld file to 
go with the image, but all the examples that I try interactively in 
grads don't work. I currently just display the values from the script like:

say 'CREATING WORLD FILE:'
say lonpixelsize
say '0.0'
say '0.0'
say latpixelsize
say xwld
say ywld
say '---------------------'

But testing interactively with:s

grads -bl
sdfopen ./a.nc
Scanning self-describing file:  ./a.nc
SDF file ./a.nc is open as file 1
LON set to -100 -50
LAT set to 0 55
LEV set to 0 0
Time values set: 2021:3:25:18 2021:3:25:18
E set to 1 1
ga-> say '0.0'
Unknown command: say
ga-> set gxout print
ga-> set prnopts %10.6f 1 1
ga-> d 10.1
Printing Grid -- 1 Values -- Undef = -9.99e+08
  10.100000
ga-> write(test.txt,result,append)
Unknown command: write(test.txt,result,append)
ga-> write('test.txt',result,append)
Unknown command: write('test.txt',result,append)

My idea here is to create the world file which in basically 6 floats 
written one per line in the file.

I'm obviously not doing something wrong here.

Thanks,
   -Steve

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