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Topic: Export with append??
Replies: 6   Last Post: Jan 18, 2013 12:49 AM

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Alexei Boulbitch

Posts: 483
Registered: 2/28/08
Re: Export with append??
Posted: Jan 14, 2013 11:28 PM
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With a command like

Export["myfile.dat", results, "List" ]

is there a way to append the results to an existing myfile.dat, rather
than creating or overwriting an existing file?

thanks for your help,


Hi, Maarten,
A simple workaround is to import your file, append a new file to it and then - to export the combined list. Assume that your mathematica notebook entitled "trialImportExport.nb" is situated in the same folder as the already existing list entitled "myfile.dat".
To be precise I generated the file myfile.dat with the list:
{25, 36, 49}
in it. Assume further that I want to append the list
to it. Then the code


Does the job. The output cell below:
D:\Documents and Settings\ABo\My Documents\Works\Mathematica_works\Examples\TrialFiles\myfileNew.dat

shows that the file has been successfully exported.
I intentionally gave the resulting file a new name, "myfileNew.dat", to check the result, but the old name can also be given to it.

Have fun, Alexei

Alexei BOULBITCH, Dr., habil.
ZAE Weiergewan,
11, rue Edmond Reuter,
L-5326 Contern, LUXEMBOURG

Office phone : +352-2454-2566
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e-mail: alexei.boulbitch@iee.lu<mailto:alexei.boulbitch@iee.lu>

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