Re: selecting columns from a list
- To: mathgroup at smc.vnet.net
- Subject: [mg47880] Re: selecting columns from a list
- From: Bill Rowe <readnewsciv at earthlink.net>
- Date: Thu, 29 Apr 2004 03:06:18 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On 4/28/04 at 6:56 AM, eddoGrasho at edo.com (Edo) wrote: >Hello I just started with mathematica, wanted to load a comma >separated data file and drop the first two columns. So I did >data=Import["C:\Data\filename.ext","CSV"]; to get the file into a >variable "data", then I am stuck, after doing some reading in the >help files about Drop, Partition, Take. Ã? etc could someone tell me >what to read and where to find info about indexing different data >structures I can think of two quick methods to achieve what you want. First, there is Drop[#,2]&/@data Alternatively, there is data[[All,Range[2,Length@First@data]]] The second method assumes the data array is regular, i.e., each row has the same number of elements. The first method only assumes there are more than 2 elements in each row. -- To reply via email subtract one hundred and four