Re: [Scilab-users] csvread different separator
Le 23/05/2016 23:15, Florian Winter a écrit : Hello I'm trying to write a function that reads data from a single file. It is a rather large file so I wanted to use the csvread function because it is faster than opening the file and then using scanf. I am surprised by the fact csvread is faster than mfscanf. mfscanf directly call C code while csvread is xritten in Scilab... The problem is, that my file is not a real csv file. It has different number of spaces in between every data entry. It looks like this: 1 2 3 4 5 6 7 8 the spaces between each entry is the same in every row so between 1 and 2 there is a single space, between 2 and 3 there are two spaces, between 3-4 and 4-5 three spaces, 5-6 one, 6-7 one and 7-8 three again. Is there a faster way than opening the file and using a scanf? Thank you! Florian ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] csvread different separator exclusive)
Florian, If you have Perl available, you could regularise the file with the following one-liner: perl -nle "print join ' ', split ' '" out.file (You'll need to switch 's to "s and vice versa if you're on *nix.) (Despite the way that looks, the split ' ' will habdle any number of intervening spaces or tabs and join ' ', will replace them with a single space. Use join "\t" to get a proper tab delimited output file.) It takes around 30s/GB on my machine. Cheers, Buk > -Original Message- > From: scilab.browseruk.c9f0207c9f.flotschos#gmail@ob.0sg.net > Sent: Mon, 23 May 2016 23:15:20 +0200 > To: users@lists.scilab.org > Subject: [Scilab-users] csvread different separator > exclusive) > > Hello > I'm trying to write a function that reads data from a single file. It is > a > rather large file so I wanted to use the csvread function because it is > faster than opening the file and then using scanf. The problem is, that > my > file is not a real csv file. It has different number of spaces in between > every data entry. > It looks like this: > > 1 2 3 4 5 6 7 8 > the spaces between each entry is the same in every row so between 1 and 2 > there is a single space, between 2 and 3 there are two spaces, between > 3-4 > and 4-5 three spaces, 5-6 one, 6-7 one and 7-8 three again. > > > Is there a faster way than opening the file and using a scanf? > > Thank you! > Florian FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more! ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
Re: [Scilab-users] csvread different separator
How about fscanfMat? On 24/5/2016 5:15 AM, Florian Winter wrote: 1 2 3 4 5 6 7 8 ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
[Scilab-users] csvread different separator
Hello I'm trying to write a function that reads data from a single file. It is a rather large file so I wanted to use the csvread function because it is faster than opening the file and then using scanf. The problem is, that my file is not a real csv file. It has different number of spaces in between every data entry. It looks like this: 1 2 3 4 5 6 7 8 the spaces between each entry is the same in every row so between 1 and 2 there is a single space, between 2 and 3 there are two spaces, between 3-4 and 4-5 three spaces, 5-6 one, 6-7 one and 7-8 three again. Is there a faster way than opening the file and using a scanf? Thank you! Florian ___ users mailing list users@lists.scilab.org http://lists.scilab.org/mailman/listinfo/users
