fid,fopen,fscanf, help

Question reads as follows: Using fopen() function read the data from “Data_excel_2.txt” , the file has 4 columns. Then plot three lines in one graph, (i) col #1 vs. Col#2, (ii) col #1 vs. Col#3, (iii) col #1 vs. Col#4.

fid=fopen('Data_excel_2.txt','r');

data=fscanf(fid,'%f %f %f %f',[4,inf])';

fclose(fid);

plot(data(:,4),data(:,4));

...that's as far as I got. I keep getting an error with the plotting so I wouldn't know how to set that up. I'm new to Matlab, so any help is much appreciated. Thank you!

-Stephanie

Answer 1

[KSSV]

fid = fopen('Data_excel_2.txt','r');
data=fscanf(fid,'%f %f %f %f',[4,inf]);

fclose(fid);

figure
plot(data(:,1),data(:,2:4))

[Stephanie Hernandez]

Hi, thank you for the response. I keep getting an error:

"Index exceeds matrix dimensions."

-Thanks

[KSSV]

This is working very fine for me....else you use 

data=importdata('Data_excel_2.txt);

figure
plot(data(:,1),data(:,2:4))

When you use importdata I am assuming that there are no text data in the file. Also there was a transpose in the above, code..that is removed..you check again.