Re: [ferret_users] Ferret core dumping with this data set

[Ansley Manke <ansley.b.manke@xxxxxxxx>]

Hi Mike,
This seems to have to do with the size of the grid the data's on. It may be a Ferret bug, but notice that if you're just doing graphics with the data, the size in T of 59359 points is much larger than the graphics device or file is going to be able to represent.  You can plot this data successfully by striding it. If you have 800 pixels available, striding in L by even as much as 50 points gives more pixels than we have.

yes? USE "http://dods.mbari.org/cgi-bin/nph-nc/data/ssdsdata/deployments/m0/200504/m0_adcp1406_20050418.nc"
yes? show data 
     currently SET data sets:
    1> http://dods.mbari.org/cgi-bin/nph-nc/data/ssdsdata/deployments/m0/200504/m0_adcp1406_20050418.nc  (default)
 name     title                             I         J         K         L
 U_COMPONENT_UNCORRECTED
          East-West Velocity Towards(+E/-  1:1       1:1       1:20      1:59359
...
 ECHO_INTENSITY_BEAM1
          Echo Intensity data per beam     1:1       1:1       1:20      1:59359
 ECHO_INTENSITY_BEAM2
          Echo Intensity data per beam     1:1       1:1       1:20      1:59359
...

yes? SHADE echo_intensity_beam1[L=1:`echo_intensity_beam1`:50]
yes? SHADE echo_intensity_beam2[L=1:`echo_intensity_beam2`:50]
yes? ! SHADE more variables ...

I'll check and see if I can find out exactly why the plot fails without strides.

Ansley


McCann, Mike wrote:

Hello,

Can someone help me understand what's wrong with my data set that's causing Ferret to crash when trying to plot the second variable?  Here's the terminal capture:

  

ferret
    

        NOAA/PMEL TMAP
        FERRET v6
        Linux(g77) 2.6.9-22. - 08/25/06
        19-Jan-07 11:54

yes? USE "http://dods.mbari.org/cgi-bin/nph-nc/data/ssdsdata/deployments/m0/200504/m0_adcp1406_20050418.nc"
yes? SHADE/SET_UP echo_intensity_beam1
yes? PPL SHADE
yes? SHADE/SET_UP echo_intensity_beam2
Segmentation fault

Thanks in advance,
Mike

--
Mike McCann 
Software Engineer
Monterey Bay Aquarium Research Institute
7700 Sandholdt Road
Moss Landing, CA 95039-9644
Voice: 831.775.1769  Fax: 831.775.1736 http://www.mbari.org


  

-- 

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Ansley Manke, NOAA/PMEL   ansley.b.manke@xxxxxxxx
7600 Sand Point Way NE, Seattle WA
Phone 206-526-6246,  FAX 206-526-6744