Importing data from an ascii file.

I want to import data into a matrix in matlab. The issue arises because I have a bunch of junk that I don't want before my data. How can I import my data into matlab output it in a matrix in a certain file name. My data looks like this

JUNK JUNK JUNK JUNK JUNK JUNK JUNK JUNK JUNK JUNK JUNK

#' Start of Data:

Data I want

The "# Start of Data:" is actually there I want everything after that line. Any assistance you can give would be very appreciated.

Answer 1

[Joseph Cheng]

you can use dlmread() which you can specify the specific row and column to start importing the data. One thing to remember dlmread starts counting with 0 not 1 like the rest of matlab. so the first column and row is both 0.

[Matthew]

So if my data was on the 200th line and was separated with spaces I'd use

dlmread('filename.asc', ' ', 200, 0)

Is that correct? I don't have that much experience with coding.

[Joseph Cheng]

I'd test it out? but i think it may be 199 line but easiest way to check is to either try it or open the txt file in a text editor that displays line numbers and see whether the junk is from 0 to 199 or 1 to 200. Both would have 200 lines but dlmread counts the first row as 0.

Answer 2

[Image Analyst]

Use the new readtable function:

t = readtable(fullFileName, 'HeaderLines', 1); % Skip 1 line in the file.

[Joseph Cheng]

ooo... when did that come out?