isen.gs can not work?

zhao yacang zdr1168 at YAHOO.COM
Mon Aug 29 09:33:05 EDT 2005


Dear grads user,

I want to use the zinterp.gs, isen.gs, pinterp.gs in grads. But when use the function according to the notes in each GS file. Something is wrong. The grads is corrupted.

I use the function like:
'open diag.ctl'
'define u320='isen(u,theta,lev,320)
'define v320='isen(v,theta,lev,320)
'set z 1'
'set gxout stream'
'd u320;v320;mag(u320,v320)'

Errors occur like:
Syntax Error:  Invalid Operand
  'zgrid' not a variable or function name
Operation Error:  Error from maskout function
  Error ocurred at column 5
DEFINE error:  Invalid expression.
Syntax Error:  Invalid Operand
  'zgrid' not a variable or function name
Operation Error:  Error from maskout function
  Error ocurred at column 5
DEFINE error:  Invalid expression.
Syntax Error:  Invalid Operand
  'zabove' not a variable or function name
  Error ocurred at column 1
DEFINE error:  Invalid expression.
Syntax Error:  Invalid Operand
  'zbelow' not a variable or function name
  Error ocurred at column 1
DEFINE error:  Invalid expression.
Syntax Error:  Invalid Operand
  'zabove' not a variable or function name
Operation Error:  Error from mean function
  Error ocurred at column 1
DEFINE error:  Invalid expression.
Syntax Error:  Invalid Operand
  'zbelow' not a variable or function name
Operation Error:  Error from mean function
  Error ocurred at column 1
DEFINE error:  Invalid expression.
Syntax Error:  Invalid Operand
  'zabove' not a variable or function name
  Error ocurred at column 18
DEFINE error:  Invalid expression.
      4 [main] grads 28148 handle_exceptions: Exception: STATUS_ACCESS_VIOLATION
  23977 [main] grads 28148 open_stackdumpfile: Dumping stack trace to GradsDODS.
dll.stackdump

Why? Please help me.

Yours,
Zhang


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