How to plot a large csv file with 3 different functions to plot

I have a 101x4 csv file and I am having trouble plotting the 3 lines.This is the code I have so far, can anyone tell me what I have done wrong?

if true
  filename='arm_motion_1.csv'
M=csvread(filename, 2,0); 
a=filename(:,1); %time in seconds
b=filename(:,2); %angular displacement
c=filename(:,3); %angular velocity
d=filename(:,4); %angular acceleration
plot(a,b,'r')
hold on
plot(a,c,'g')
hold on 
plot(a,d,'b')
hold on
title('Raw Kinematics Data on Arm Flexion-Extension')
t=[0:.05:5]

end

Answer 1

[KSSV]

filename='arm_motion_1.csv' ;
M=csvread(filename); 
a=M(:,1); %time in seconds
b=M(:,2); %angular displacement
c=M(:,3); %angular velocity
d=M(:,4); %angular acceleration
plot(a,b,'r')
hold on
plot(a,c,'g')
hold on 
plot(a,d,'b')
hold on
title('Raw Kinematics Data on Arm Flexion-Extension')
t=[0:.05:5]

[Sarah Hicks]

You are my new favorite person. My classmates and I love you, and wish that God blesses forever and always.

[KSSV]

Ha ha..thanks for that.....enjoy MATLAB..happy to help you. :)