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Re: [ferret_users] Question about Reading ASCII Files



Hello AG,

the method is like this: yes? file/OPTIONS "filename"

these options could be useful:
/skip=2
/variables="var1,var2"
/columns=100
/ez
/format=delimited
/type=numeric

and look it up in the user's guide as well:
http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/data-set-basics/ASCII-DATA
http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/data-set-basics/TRICKS-TO-READING-BINARY-AND-ASCII-FILES/

Cheers, Peter

On Tue, Aug 4, 2009 at 11:51 PM, ag <agdc2005@xxxxxxxxx> wrote:
Dear Ferret Users:

Am looking for some suggestions on how to read an ASCII file (example below) using Ferret. I would like to be able to skip the first two records and then read the third as an integer (69 in this case), skip the fourth record and  then read the "integer" number of records of input with each record having 5 columns.

The reason I need to do this is sometimes, there are more a few files of the format below concatenated and the number of records of each file is specified always as below in separate blocks.

Thanks in Advance
agdc2005

--------------------File---------------
GISS
Image_Optical_Depth_Land_And_Ocean/MOD04_L2
69
filename        begindatetime   location        mean
MOD04_L2.A2007001.1500.005.2007003093108.hdf    2007-01-01 15:00:00     GISS
MOD04_L2.A2007001.1635.005.2007003093604.hdf    2007-01-01 16:35:00     GISS
MOD04_L2.A2007002.1540.005.2007004182338.hdf    2007-01-02 15:40:00     GISS    0.081
MOD04_L2.A2007003.1625.005.2007005151340.hdf    2007-01-03 16:25:00     GISS    0.027
MOD04_L2.A2007004.1530.005.2007007055054.hdf    2007-01-04 15:30:00     GISS
MOD04_L2.A2007005.1615.005.2007008173325.hdf    2007-01-05 16:15:00     GISS
MOD04_L2.A2007006.1520.005.2007010020024.hdf    2007-01-06 15:20:00     GISS
MOD04_L2.A2007007.1600.005.2007012202039.hdf    2007-01-07 16:00:00     GISS    0.167
MOD04_L2.A2007008.1505.005.2007012223915.hdf    2007-01-08 15:05:00     GISS
MOD04_L2.A2007008.1645.005.2007012225717.hdf    2007-01-08 16:45:00     GISS
MOD04_L2.A2007009.1550.005.2007013005323.hdf    2007-01-09 15:50:00     GISS
MOD04_L2.A2007010.1630.005.2007013053221.hdf    2007-01-10 16:30:00     GISS    0.039
MOD04_L2.A2007011.1535.005.2007014063943.hdf    2007-01-11 15:35:00     GISS    0.113
MOD04_L2.A2007012.1620.005.2007014045513.hdf    2007-01-12 16:20:00     GISS
MOD04_L2.A2007013.1525.005.2007015044928.hdf    2007-01-13 15:25:00     GISS
MOD04_L2.A2007014.1605.005.2007017161152.hdf    2007-01-14 16:05:00     GISS
MOD04_L2.A2007015.1510.005.2007017183912.hdf    2007-01-15 15:10:00     GISS
MOD04_L2.A2007016.1555.005.2007018180305.hdf    2007-01-16 15:55:00     GISS
MOD04_L2.A2007017.1500.005.2007019123555.hdf    2007-01-17 15:00:00     GISS    0.000
MOD04_L2.A2007017.1635.005.2007019125327.hdf    2007-01-17 16:35:00     GISS    0.028
MOD04_L2.A2007018.1540.005.2007020111006.hdf    2007-01-18 15:40:00     GISS    0.126
MOD04_L2.A2007018.1545.005.2007020105940.hdf    2007-01-18 15:45:00     GISS
MOD04_L2.A2007019.1625.005.2007023060629.hdf    2007-01-19 16:25:00     GISS
MOD04_L2.A2007020.1530.005.2007023002013.hdf    2007-01-20 15:30:00     GISS
MOD04_L2.A2007021.1615.005.2007023181352.hdf    2007-01-21 16:15:00     GISS
MOD04_L2.A2007022.1520.005.2007024120208.hdf    2007-01-22 15:20:00     GISS
MOD04_L2.A2007023.1600.005.2007024194356.hdf    2007-01-23 16:00:00     GISS    0.136
MOD04_L2.A2007024.1505.005.2007027011552.hdf    2007-01-24 15:05:00     GISS    0.095
MOD04_L2.A2007024.1645.005.2007027010315.hdf    2007-01-24 16:45:00     GISS    0.086


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