Re: How do I take every 3rd number from a text file?
- To: mathgroup at smc.vnet.net
- Subject: [mg114227] Re: How do I take every 3rd number from a text file?
- From: Bill Rowe <readnews at sbcglobal.net>
- Date: Sun, 28 Nov 2010 06:52:04 -0500 (EST)
On 11/27/10 at 3:37 AM, cubsfan334 at gmail.com (cubsfan334) wrote: I've been reading in text files using the following command: >ReadList["file.txt", Word] >However, now I only want to read in every 3rd number, starting with >the valueI specify. >For example, say I had these values: >0, 1, 2, 3, 4, 5, 6, 7, 8, 9 >How would I read in every third number, starting with the second >integer? So the result would look like this: >1, 4, 7 If you have a sufficiently large list that you cannot read the entire list in at once you would need to create a custom routine to read the file using Read. For smaller files, the most efficient proceedure would be to do Read[filename, Number][[2;;;;3]]