Plotting certain columns from a .dat file
4 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
Greetings all,
It's been quite some time since I've used MATLAB, and embarrasingly I've been struggling with this all day. Needless to say I am a bit rusty! I have a data file that has 8 columns of data (and has headers at the top). Right now I'm trying to just plot column 2 of the data on the x-axis and plot the 4th and 8th columns as two line plots along the y-axis.
I imagine you use fopen and textscan, but there's so many to choose from. Maybe importdata?
Any help would be appreciated. Thanks!
0 comentarios
Respuesta aceptada
Fangjun Jiang
el 20 de Sept. de 2011
If your data file format is consistent, try
data=importdata('MyFile.data');
For plotting, if you have a matrix A, A(:,2) is all the data in the second column so you can do:
plot(A(:,2),A(:,4),'r',A(:,2),A(:,8),'b');
6 comentarios
Fangjun Jiang
el 21 de Sept. de 2011
data is a structure, type data in Command Window to see what it contains. You need to do A=data.data.
You've used MATLAB long time ago so maybe going through the "Getting Started" in MATLAB document is beneficial.
Más respuestas (0)
Ver también
Categorías
Más información sobre Downloads en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!