Message-ID: <OF8A9DC144.FDD60C36-ONC1257800.0038DC52-C1257800.0039740F@precheza.cz>
Date: 2010-12-21T10:26:56Z
From: PIKAL Petr
Subject: Odp: replace values of a table !!!
In-Reply-To: <478628.1266.qm@web110402.mail.gq1.yahoo.com>
Hi
r-help-bounces at r-project.org napsal dne 21.12.2010 09:59:31:
> Dear all,
>
> Dear all,
>
> I am a relatively new user.
> I have an ascii file with 550 rows and 400 columns. The file contain
values
> ranging from 1 to 2000 and some values with -9999.
>
> I want to generate a new file where the -9999 values are replaced with 0
> values, the other values with the 1.0 value.
Do you want to use R for it? If yes you can read the file and set -9999 as
missing value
see ?read.table
further on you can
change not NA values to 1 by
your.data[!is.na(your.data)] <- 1
and NA values to 0 by
your.data[is.na(your.data)] <- 0
Regards
Petr
>
> What should I do,
>
> Thanks
> Taiseer
>
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