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Re: [ferret_users] scattered ASCII data to NetCDF



Hi Hanh, it will be useful.

My file has 176 rows where the two first are coordinates. I used

file/form=delim/delim=";"/col=176 my_ascii_data.txt

When I do 'show data' I got 100 variables sequentially named v1, v2, ..., v100. Shall it be v1, v2, ..., v176, not? What's happening? Is it a Ferret limitation or am I doing something wrong?

Bill, your comment is surely valuable. I've used scat2grid taking care about errors produced by interpolation, but I hadn't thought any kind of evaluation.

Thanks for all attention!

2008/6/26 <nguyen@xxxxxxxxxx>:
oups sory I didn't get your question
well in this case you can check the section "2.5. ASCII data on line":
http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/data-set-basics/ASCII-DATA
especially the option /column=ncol to define the number of columns you have.
Hanh


> Hanh,
>
> Thanks for your help.
>
> scat2grid is the following step of my job. This time, I just would like to
> store my data without any interpolation.
>
> Or, at least, I would like to read these data without specifying 170
> variables in my 'file/var="..."' command.
>
> 2008/6/26 <nguyen@xxxxxxxxxx>:
>
>> Hi Paulo
>>
>> there is a function "scat2grid" that grids scattered data. Check the
>> documentation for detailed explanations Ch3 Sec2.3:
>> http://ferret.pmel.noaa.gov/Ferret/documentation/users-guide/index/index-s
>>
>> Hanh
>>
>> > Hi Ferreters,
>> >
>> > I have some scattered precipitation data stored in a ASCII file with
>> LON
>> > in
>> > first row, LAT in second row and with third to last rows being daily
>> > accumulated rainfall relative to that (lon,lat) beginning at
>> 01-jan-2008
>> > separated by semicolons, e.g.:
>> >
>> > -39.05;-7.37;0;0;0;0;0;0;0;0;0;0;0;23;10;5;8 ;...
>> > -40.12;-2.88;0;9.8;0;12.6;17.2;0;0;11;0;0;0;0;0;4.2;0 ;...
>> > -39.58;-6.08;0;0;0;0;0;0;0;0;0;0;0;0;5;20;0 ;...
>> > -40.12;-6.57;0;0;0;3;0;0;0;0;0;0;0;0;0;0;13 ;...
>> > -40.55;-3.58;0;0;0;0;0;0;0;6;0;0;0;0;0;0;4 ;...
>> > -39.73;-7;0;0;0;25.9;0;0;0;0.8;0;0;0;0;2.8;9.4;9.6;0 ;...
>> > -38.25;-5.52;0;0;0;0;0;0;0;0;0;0;0;0;2;0;2.2;...
>> > .
>> > .
>> > .
>> >
>> > The full dataset covers about 170 days and, hence, we may expect about
>> 170
>> > rows. I know this procedure to read ASCII data:
>> >
>> > file/form=delim/delim="<delim>"/var="lon,lat,day1,day2,day3,...,dayN"
>> > my_ascii_data.txt
>> >
>> > But it seems to be not really useful in my case.
>> >
>> > Is there a way to produce a NC file with one variable ('precip') in a
>> > regular time axis and irregular XY axis?
>> >
>> > If not, should be useful a solution to read this data without
>> specifying
>> > one
>> > variable for each day (say, using file/var="<list of vars>"
>> my_data.txt).
>> >
>> > Well... to finish, I would assure a nice reward for that who first
>> help
>> to
>> > solve this problem!
>> >
>> > Thanks
>> >
>> >
>> > --
>> > Ms. Paulo Henrique Santiago de Maria
>> > Grupo de Modelagem Atmosférica
>> > Departamento de Meteorologia e Oceanografia
>> > Fundação Cearense de Meteorologia e Recursos Hídricos
>> > Av. Rui Barbosa 1246 - CEP 60115-221
>> > Fortaleza, Ceará
>> > Fone: (85) 3101-1106 / 3101-1126
>> >
>>
>>
>
>
> --
> Ms. Paulo Henrique Santiago de Maria
> Grupo de Modelagem Atmosférica
> Departamento de Meteorologia e Oceanografia
> Fundação Cearense de Meteorologia e Recursos Hídricos
> Av. Rui Barbosa 1246 - CEP 60115-221
> Fortaleza, Ceará
> Fone: (85) 3101-1106 / 3101-1126
>




--
Ms. Paulo Henrique Santiago de Maria
Grupo de Modelagem Atmosférica
Departamento de Meteorologia e Oceanografia
Fundação Cearense de Meteorologia e Recursos Hídricos
Av. Rui Barbosa 1246 - CEP 60115-221
Fortaleza, Ceará
Fone: (85) 3101-1106 / 3101-1126
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