Questions about gr2stn

[Stefan Gofferje]

Hei,

I am trying to make up some station data out of the GFS model data with
gr2stn(). My aims are
- draw a temperature / pressure curve over a given timeframe for a
location(lon/lat)
- draw wxsymbols on a map based on (gridded) model data
- plot a SKEW-T for a given location based on (gridded) model data

I started with the seemingly easiest, the temp/time diagramm but

set gxout line
d gr2stn(tmp2m,23.768,61.498)

results in

DISPLAY error:  Invalid expression
  Expression = gr2stn(tmp2m,23.768,61.498)


Second attempt:

ga-> set gxout value
ga-> d gr2stn(tmp2m,23.768,61.498)
Error from GR2STN: 2nd argument must be stns
Operation Error:  Error from gr2stn function
  Error ocurred at column 1
DISPLAY error:  Invalid expression
  Expression = gr2stn(tmp2m,23.768,61.498)

Any hints?

Tervehdys Suomesta,
Stefan Gofferje