Why will these plots not plot on the same graph?

I think that matlab thinks the data has different axes for each plot, even though all the data has the same two axes. I get the data that im plotting from a matrix that I create earlier in the code. The columns are set up in a way that if column x is my x values, column x+1 is my y values, where x is an odd number. If I comment out the red graph, the green is plotted. If I comment out the green and red graph, the blue is plotted.

clc; clear;
load('rpm_kw.mat')

x=1;i=1;
rpmcol=1;
[m,n]=size(rpm_kw);
while rpmcol<=m-3
    
    Astop=1;
    conf=0;
    while conf==0 %getting set A
        if isnan(rpm_kw(Astop,rpmcol)) || isnan(rpm_kw(Astop,rpmcol+1)) %finding length of set A by running until nan
            Astop=Astop-1; %location of the last value in set A
            spdnpwr(1:Astop,x)=rpm_kw(1:Astop,rpmcol); %writing rpm values for set A
            spdnpwr(1:Astop,x+1)=rpm_kw(1:Astop,rpmcol+1); %writing pwr values for set A
            conf=1; %confirms set A values have been written to spdnpwr
        else
            Astop=Astop+1; %Increase Astop (done until NaN is found)
        end
    end
    
    Bstop=1;
    conf=0;
    while conf==0 %getting set B
        if isnan(rpm_kw(Bstop,rpmcol)) || isnan(rpm_kw(Bstop,rpmcol+1)) %finding length of set B by running until nan
            Bstop=Bstop-1; %location of the last value in set B
            spdnpwr(1:Bstop,x+2)=rpm_kw(1:Bstop,rpmcol); %writing rpm values for set B
            spdnpwr(1:Bstop,x+3)=rpm_kw(1:Bstop,rpmcol+1); %writing pwr values for set B
            conf=1; %confirms set B values have been written to spdnpwr
        else
            Bstop=Bstop+1; %Increase Bstop (done until NaN is found)
        end
    end
    
    Cstop=Astop+Bstop;
    y=1;a=1;b=1;
    while y<=Cstop %getting set C
        if spdnpwr(a,x)<spdnpwr(b,x+2) %if set A is less than set B, use set A for current set C value
            spdnpwr(y,x+4)=spdnpwr(a,x); %rpm
            spdnpwr(y,x+5)=spdnpwr(a,x+1); %pwr
            a=a+1;
        elseif spdnpwr(b,x+2)<spdnpwr(a,x) %if set B is less than set A, use set B for current set C value
            spdnpwr(y,x+4)=spdnpwr(b,x+2); %rpm
            spdnpwr(y,x+5)=spdnpwr(b,x+3); %pwr
            b=b+1;
        elseif spdnpwr(a,x)==spdnpwr(b,x+2) %if set B is equal to set A
            if spdnpwr(a,x+1)<spdnpwr(b,x+3) %if set A pwr is less than set B, use set A for current set C value
                spdnpwr(y,x+4)=spdnpwr(a,x); %rpm
                spdnpwr(y,x+5)=spdnpwr(a,x+1); %pwr
                a=a+1;
            elseif spdnpwr(b,x+3)<spdnpwr(a,x+1) %if set B pwr is less than set A, use set B for current set C value
                spdnpwr(y,x+4)=spdnpwr(b,x+2); %rpm
                spdnpwr(y,x+5)=spdnpwr(b,x+3); %pwr
                b=b+1;
            elseif spdnpwr(a,x+1)==spdnpwr(b,x+3) %if set A pwr is equal to set B, use set A for current set C value and set B for next C value
                spdnpwr(y,x+4)=spdnpwr(a,x); %rpm
                spdnpwr(y,x+5)=spdnpwr(a,x+1); %pwr
                spdnpwr(y+1,x+4)=spdnpwr(b,x+2); %rpm
                spdnpwr(y+1,x+5)=spdnpwr(b,x+3); %pwr
                a=a+1;b=b+1;y=y+1;
            else
                disp('You mucked up')
            end
        end
        y=y+1;
    end
    
    %temp plots
    subplot(4,4,i)
    plot(spdnpwr(1:Astop,x),spdnpwr(1:Astop,x+1),'b')
    plot(spdnpwr(1:Bstop,x+2),spdnpwr(1:Bstop,x+3),'g')
    plot(spdnpwr(1:Cstop,x+4),spdnpwr(1:Cstop,x+5),'r')
    xlabel('rpm')
    ylabel('kw')
    
    i=i+1;
    rpmcol=rpmcol+4;
    x=x+6;
end

Answer 1

[Jim Riggs]

You need to turn on "hold" mode to plot more than one plot on the same axes. If you do not use hold, the next plot replaces the previous one.

plot(...'b');
hold on;
plot(... 'g');
plot(... 'r');

[Reid Johnson]

I've tried using hold before but it didn't work. I'll try again and put it in the location you have it in.

The only success I've had is using yyaxis, but that gives undesirable results.