% simple matlab script that plots single frequency 3D monitor data
e_field=dlmread('e_field.txt','\t'); % tab delimited
a=e_field(1,:);  % x
b=e_field(2,:);  % y
c=e_field(3,:);  % z
e=e_field(4,:);  % e-field value
size=25;         % rendering size of plotted points  

% plot the data and label
scatter3(a*1e6,b*1e6,c*1e6,size,e);
xlabel('x-axis (um)');
ylabel('y-axis (um)');
zlabel('z-axis (um)');