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[gov2001-l] Storing objects to avoid re-running loops

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dmkuhn＠fas.harvard.edu

12 Apr 2009 12 Apr '09

11 a.m.

Hi all, Alisha and I are interested in saving the object produced by a for loop so that we are not obligated to re-run the loop every time we want to work with our data, as it takes a really long time and uses a lot of memory. Has anyone needed to do this? Thanks a lot, Diane

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woolfalk＠fas.harvard.edu

12 Apr 12 Apr

6:30 p.m.

You could use a list to store each object. But depending on what you are doing you may or will run into memory programs no matter how your store your objects. On Sun, Apr 12, 2009 at 11:00 AM, Diane Kuhn <dmkuhn at fas.harvard.edu> wrote:

Hi all, Alisha and I are interested in saving the object produced by a for loop so that we are not obligated to re-run the loop every time we want to work with our data, as it takes a really long time and uses a lot of memory. Has anyone needed to do this? Thanks a lot, Diane _______________________________________________ gov2001-l mailing list gov2001-l at mailman.fas.harvard.edu http://mailman.fas.harvard.edu/mailman/listinfo/gov2001-l

-- Miya Woolfalk Ph.D. Student Harvard University Government and Social Policy

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dmkuhn＠fas.harvard.edu

6:55 p.m.

Thanks Miya-I think what we are actually interested in doing is storing a new data set that we could call up in R; the new data set is a subset of our initial data, but creating the subset entails running a rather lengthy, cumbersome for loop that creates memory issues. We essentially want to save the subset data as a new data file so that we can just open that and load it when we want to work with it, rather than re-creating it from our original data by running the for loop everytime we need to use the subset data. Does that make sense? We've been looking at the attach(), store(), and assign() commands, but we're still unclear on how to do this. Thanks Diane On Sun, Apr 12, 2009 at 6:30 PM, Miya Woolfalk <woolfalk at fas.harvard.edu> wrote:

You could use a list to store each object.? But depending on what you are doing you may or will run into memory programs no matter how your store your objects. On Sun, Apr 12, 2009 at 11:00 AM, Diane Kuhn <dmkuhn at fas.harvard.edu> wrote:

Hi all, Alisha and I are interested in saving the object produced by a for loop so that we are not obligated to re-run the loop every time we want to work with our data, as it takes a really long time and uses a lot of memory. Has anyone needed to do this? Thanks a lot, Diane _______________________________________________ gov2001-l mailing list gov2001-l at mailman.fas.harvard.edu http://mailman.fas.harvard.edu/mailman/listinfo/gov2001-l

-- Miya Woolfalk Ph.D. Student Harvard University Government and Social Policy _______________________________________________ gov2001-l mailing list gov2001-l at mailman.fas.harvard.edu http://mailman.fas.harvard.edu/mailman/listinfo/gov2001-l

-- Diane Kuhn PhD Candidate Department of Government Harvard University dmkuhn at fas.harvard.edu

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woolfalk＠fas.harvard.edu

7:02 p.m.

You can just use save() to save the object as an Rdata file. On Sun, Apr 12, 2009 at 6:55 PM, Diane Kuhn <dmkuhn at fas.harvard.edu> wrote:

Thanks Miya-I think what we are actually interested in doing is storing a new data set that we could call up in R; the new data set is a subset of our initial data, but creating the subset entails running a rather lengthy, cumbersome for loop that creates memory issues. We essentially want to save the subset data as a new data file so that we can just open that and load it when we want to work with it, rather than re-creating it from our original data by running the for loop everytime we need to use the subset data. Does that make sense? We've been looking at the attach(), store(), and assign() commands, but we're still unclear on how to do this. Thanks Diane On Sun, Apr 12, 2009 at 6:30 PM, Miya Woolfalk <woolfalk at fas.harvard.edu> wrote:

You could use a list to store each object. But depending on what you are doing you may or will run into memory programs no matter how your store

your

objects. On Sun, Apr 12, 2009 at 11:00 AM, Diane Kuhn <dmkuhn at fas.harvard.edu>

wrote:

Hi all, Alisha and I are interested in saving the object produced by a for loop so that we are not obligated to re-run the loop every time we want to work with our data, as it takes a really long time and uses a lot of memory. Has anyone needed to do this? Thanks a lot, Diane _______________________________________________ gov2001-l mailing list gov2001-l at mailman.fas.harvard.edu http://mailman.fas.harvard.edu/mailman/listinfo/gov2001-l

-- Miya Woolfalk Ph.D. Student Harvard University Government and Social Policy _______________________________________________ gov2001-l mailing list gov2001-l at mailman.fas.harvard.edu http://mailman.fas.harvard.edu/mailman/listinfo/gov2001-l

-- Diane Kuhn PhD Candidate Department of Government Harvard University dmkuhn at fas.harvard.edu _______________________________________________ gov2001-l mailing list gov2001-l at mailman.fas.harvard.edu http://mailman.fas.harvard.edu/mailman/listinfo/gov2001-l

-- Miya Woolfalk Ph.D. Student Harvard University Government and Social Policy

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dmkuhn＠fas.harvard.edu
woolfalk＠fas.harvard.edu