MATLAB: How can you apply single value to range in XY plot

Question

Hi,

I'm quite new to Matlab and I'm struggling with one particular problem. Can you apply single value of Y to a range of values of X without having to make a new matrix when plotting? For example, you have an engine with rpm from 1000 to 8000. You divide rpm range to 250 rpm subranges, so you have matrix like:

rpm=[1000,1250;1250,1500;1500,1750;so on].

And every 250 rpm range has a specific value which applies to that range, for example

value=[60;70;75;so on].

I would like to plot as in:

hold on for i=1:length

plot(rpm(i,:), value(i)).

end

I can't seem to make such a plot, do you have any recommendations or does Matlab has some plot function for this? Because of some specifics I can't make a new matrix with sorted values and it would take a lot of time to sort everything because of large number of data sets. Presented case is just for visualisation of what I need.

Thank your for your time!

Answer 1

rpm = 1:100 ;
val = 1:10 ;
rpm = reshape(rpm,10,[])' ;
figure
hold on
for i = 1:length(val)
    X = rpm(i,:) ;
    Y = repmat(val(1),1,size(rpm,2)) ;
    plot(X,Y,'color',rand(1,3))
end