MATLAB: How to set limit of scatter plot

MATLAB

dear

I am making scatter plot of MAV at different shoulder angle.

I m looking program to smart enough to set same limit of axis for all 4 subplot.

Q1) How can i do this.

Q2) how i find which color show which data values?? like out of 5 point blue is on which number?

Reead about xlim, legend, text, axistight.

figure(4)
hold on
plot(Out(:,1),time);
plot(Out(:,10),time);
plot(Out(:,20),time);
set(gca, 'ydir', 'reverse');
xlabel('Rpp')
ylabel('Time (ms)')

figure(4)
plot(Out(:,[1 10 20]),time);
set(gca, 'ydir', 'reverse');
xlabel('Rpp')
ylabel('Time (ms)')

axis([min(x) max(x) min(y) max(y)])

where x and y are your x,y data respectively.