Colouring different regions on a graph.

I have time series data which is non linear. It has really high and really low areas which I need to represent using different colours. Its a line graph. Please assist.

Answer 1

[Jakob B. Nielsen]

Plot stepwise segments of your data? For example:

data=1000*rand(1000,1);
data=sort(data);
x=1:1:1000;
start=1;
figure
for i=1:100
    if mean(data(start:start+10)) > 500
        cc='r';
    else
        cc='b';
    end
    plot(x(start:start+10),data(start:start+10),cc);
    hold on
    start=i*10;
end

[Bhavick Singh]

Hello, thanks for the answer. I have data in a excel spreadsheet. I have to draw a voltage vs time graph, and label the trends according to different colour. Please assist