Appending data to a existing file
- To: mathgroup at smc.vnet.net
- Subject: [mg42133] Appending data to a existing file
- From: Torsten Klaiberg <torsten0077 at gmx.de>
- Date: Fri, 20 Jun 2003 04:57:31 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
Dear users, the following situation: I have only a very slow computer with small RAM size. But many spectra to analyze. From each spectrum I get 10 values. This values I append to a List. After 10 spectra analyzed I save the data with Export["dummy.dat",List,"Table"] in the file dummy.dat. But. Export[] does not append the data to the file, it writes it new every time. So I cant clear the List. I have to hold all the data in the List therefor in RAM. But while the List growth Mathematica gets slower and slower. Thats why I need a function which appends data to a file. Has someone an idea? Thank you. Torsten