Generating images of particle clouds

%import data file:
InputFileName = <>
SaveFilesToFolder=<>
TimesParticleCloudPoints = readtable(InputFileName,'Delimiter', '\t');
TimesParticleCloudPoints = table2array(TimesParticleCloudPoints);
d = TimesParticleCloudPoints(:,1);
times = unique(TimesParticleCloudPoints(:,1)); %get distinct time periods
points = [];
counter = 0;
for t=1:size(times)
    if times(t) > 70
        disp('KIDNAPPING: ')
        disp(t)
    end
   
    counter =counter+1;
    points = [];
    for w=1:size(TimesParticleCloudPoints(:,1))
        if TimesParticleCloudPoints(w,1) == times(t)
        %if Time(w) == times(t)
            %points = [points; X(w) Y(w);];
            points = [points; TimesParticleCloudPoints(w,3) TimesParticleCloudPoints(w,4);];
        end
    end
    fig = scatter(points(:,1), points(:,2));
   
    if times(t) >= 70
        header = strvcat('Post-Kidnapped. T = ', num2str(times(t)));
    else
        header = strvcat('T = ', num2str(times(t)));
    end
   
    title(header);
    saveas(fig, strcat(SaveFilesToFolder, int2str(counter),'.png'));
end

Expanding to draw arrows. This link seems helpful.  My angles are in the dataset as quaternions...

https://stackoverflow.com/questions/1803043/how-do-i-display-an-arrow-positioned-at-a-specific-angle-in-matlab