graph multiple fields in a struct

I have a struct with multiple fields named data1, data2, data3 etc up to 9 I want to graph the first two colums of each field

I used this

position = variable.data1(:,2); 
velocity = variable.data1(:,3); 

%then i did 
plot(position,velocity) 

This worked fine but is there anyway to do this in a loop to make it faster? In the future I may have data up to 100s of different arrays

Answer 1

[Kevin Phung]

fld = fieldnames(variable); %list of all field names.. data1, data2,data3...

for i = 1:numel(fld) % for each field name
    m = variable.(fld{i}); %this will be the data1,data2,data3 matrix
    pos = m(:,2);%index matrix for position
    vel = m(:,3); %velocity
    
    plot(pos,vel); %plot results
    hold on; % keep plot for next plot
end