Re: running ferret from a CGI script

[Steve Hankin <Steven.C.Hankin@xxxxxxxx>]

Hi Rodrigo,

Might the error message **ERROR: .gif: Permission denied." suggest that the
CGI process lacks the privileges needed to write a GIF file in that
directory?

    - steve

=======================================

Rodrigo Caballero wrote:

> Hello,
>
> I have a somewhat technical question that I hope someone can help me
> with.
>
> I'm trying to call ferret from a CGI script in order to read some data,
> make a simple XY plot, plot it out to gif file, and then send the gif
> back to the browser client. The CGI script sets up all the ferret
> environment variables and then does
>
> ferret -gif < foo.jnl > /tmp/ferret.log,
>
> where foo.jnl is simply:
>
> file/skip=2/var=hour,toasw "/tmp/diurnal"
> plot/vs/line hour,toasw
> frame/file="/tmp/foo.gif"
>
> This works fine when I do it from the command line, but when I do it
> from the CGI script I get the following error:
>
> **ERROR: .gif: Permission denied
> gsetcolourrep()    7 GKS not in proper state: GKS shall be in one of
> the states WSOP, WSAC or SGOP
> gupdatews()    7 GKS not in proper state: GKS shall be in one of the
> states WSOP, WSAC or SGOP
> gclearws()    6 GKS not in proper state: GKS shall be either in the
> state WSOP or in the state WSAC
> ginqwsconntype()    7 GKS not in proper state: GKS shall be in one of
> the states WSOP, WSAC or SGOP
> gsetwswindow()    7 GKS not in proper state: GKS shall be in one of the
> states WSOP, WSAC or SGOP
> gescsetdcsize()    7 GKS not in proper state: GKS shall be in one of
> the states WSOP, WSAC or SGOP
> gupdatews()    7 GKS not in proper state: GKS shall be in one of the
> states WSOP, WSAC or SGOP
>   **ERROR: required program command has not been given: graphical output
> device isnt ready
>
> I guess I should really be using the LAS, but I'd rather not get
> involved in those intricacies. Any suggestions?
>
> Thanks,
> Rodrigo
>
> ---
>
> Rodrigo Caballero Augi (http://geosci.uchicago.edu/~rca)
> Research Associate
> Department of the Geophysical Sciences, University of Chicago
> 5734 South Ellis Avenue, Chicago, IL 60637, USA.

--

Steve Hankin, NOAA/PMEL -- Steven.C.Hankin@noaa.gov
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