R help - Feb 2011 - Running code sequentially from separate scripts (but not functions)

Hello!

I am wondering if it's possible to run - in sequence - code that is
stored in several R scripts.
For example:

Script in the file "code1.r" contains the code:
a = 3; b = 5; c = a + b

Script in the file "code2.r" contains the code:
d = 10; e = d - c

Script in the file "code3.r" contains the code:
result=e/a

I understand that I could write those 3 scripts as 3 functions and
source them from another script.
But maybe there is a way of having them run one by one as such?

Thanks a lot!

-- 
Dimitri Liakhovitski
Ninah Consulting
www.ninah.com

If you are just wanting to run them once, you can just do:

source("code1.r")
source("code2.r")
source("code3.r")

or place the file names in a vector, say 'filenames' and:

sapply(filenames, source)

If you want to use them multiple times, try:

run1 <- parse("code1.r")
run2 <- parse("code2.r")
run3 <- parse("code3.r")

# Use this to run anytime
eval(run1)
eval(run2)
eval(run3)
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 the thing itself have purpose? Or do we, what's the word... imbue it."
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r-help-bounces at r-project.org wrote on 02/24/2011 10:21:47 AM:
> [image removed] 
> 
> [R] Running code sequentially from separate scripts (but not functions)
> 
> Dimitri Liakhovitski 
> 
> to:
> 
> r-help
> 
> 02/24/2011 10:24 AM
> 
> Sent by:
> 
> r-help-bounces at r-project.org
> 
> Hello!
> 
> I am wondering if it's possible to run - in sequence - code that is
> stored in several R scripts.
> For example:
> 
> Script in the file "code1.r" contains the code:
> a = 3; b = 5; c = a + b
> 
> Script in the file "code2.r" contains the code:
> d = 10; e = d - c
> 
> Script in the file "code3.r" contains the code:
> result=e/a
> 
> I understand that I could write those 3 scripts as 3 functions and
> source them from another script.
> But maybe there is a way of having them run one by one as such?
> 
> Thanks a lot!
> 
> -- 
> Dimitri Liakhovitski
> Ninah Consulting
> www.ninah.com
> 
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide 
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.

You say you are aware that you can source them from a common script, yet you
don't seem satisfied with that.

Perhaps you could be more specific about why that solution is not satisfactory?

One thing you said could indicate a misunderstanding... you do not have to wrap
the code in functions before you source the files.
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/Software/Embedded Controllers) .OO#. .OO#. rocks...1k
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Dimitri Liakhovitski <dimitri.liakhovitski@gmail.com> wrote:

Hello! I am wondering if it's possible to run - in sequence - code that is
stored in several R scripts. For example: Script in the file "code1.r"
contains the code: a = 3; b = 5; c = a + b Script in the file
"code2.r" contains the code: d = 10; e = d - c Script in the file
"code3.r" contains the code: result=e/a I understand that I could
write those 3 scripts as 3 functions and source them from another script. But
maybe there is a way of having them run one by one as such? Thanks a lot! --
Dimitri Liakhovitski Ninah Consulting
www.ninah.com_____________________________________________
R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and
provide commented, minimal, self-contained, reproducible code.


	[[alternative HTML version deleted]]

You don't need to write functions to "source" files:

source("code1.R")
source("code2.R")
source("code3.R")

When you source a file with a bunch of function definitions, the definitions are
just assignment statements:

f <- function (x)...
g <- function (x,y,z) ...

Did you think you would break your computer if you just tried this to see if it
worked?  :)



-----Original Message-----
From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On Behalf Of Dimitri Liakhovitski
Sent: Thursday, February 24, 2011 10:22 AM
To: r-help
Subject: [R] Running code sequentially from separate scripts (but not functions)

Hello!

I am wondering if it's possible to run - in sequence - code that is
stored in several R scripts.
For example:

Script in the file "code1.r" contains the code:
a = 3; b = 5; c = a + b

Script in the file "code2.r" contains the code:
d = 10; e = d - c

Script in the file "code3.r" contains the code:
result=e/a

I understand that I could write those 3 scripts as 3 functions and
source them from another script.
But maybe there is a way of having them run one by one as such?

Thanks a lot!

--
Dimitri Liakhovitski
Ninah Consulting
www.ninah.com

______________________________________________
R-help at r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.




message may contain confidential information. If you are not the designated
recipient, please notify the sender immediately, and delete the original and any
copies. Any use of the message by you is prohibited.

Thanks a lot, everyone!
Honestly - I just did not know one could source everything and not
just functions.
What you wrote is simple, but pretty eye-opening for me (and extremely helpful)!
Dimitri


On Thu, Feb 24, 2011 at 10:51 AM,  <rex.dwyer at syngenta.com>
wrote:
> You don't need to write functions to "source" files:
>
> source("code1.R")
> source("code2.R")
> source("code3.R")
>
> When you source a file with a bunch of function definitions, the
definitions are just assignment statements:
>
> f <- function (x)...
> g <- function (x,y,z) ...
>
> Did you think you would break your computer if you just tried this to see
if it worked? ?:)
>
>
>
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at
r-project.org] On Behalf Of Dimitri Liakhovitski
> Sent: Thursday, February 24, 2011 10:22 AM
> To: r-help
> Subject: [R] Running code sequentially from separate scripts (but not
functions)
>
> Hello!
>
> I am wondering if it's possible to run - in sequence - code that is
> stored in several R scripts.
> For example:
>
> Script in the file "code1.r" contains the code:
> a = 3; b = 5; c = a + b
>
> Script in the file "code2.r" contains the code:
> d = 10; e = d - c
>
> Script in the file "code3.r" contains the code:
> result=e/a
>
> I understand that I could write those 3 scripts as 3 functions and
> source them from another script.
> But maybe there is a way of having them run one by one as such?
>
> Thanks a lot!
>
> --
> Dimitri Liakhovitski
> Ninah Consulting
> www.ninah.com
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
>
>
>
> message may contain confidential information. If you are not the designated
recipient, please notify the sender immediately, and delete the original and any
copies. Any use of the message by you is prohibited.
>
>


-- 
Dimitri Liakhovitski
Ninah Consulting
www.ninah.com