How adding second grid and values in stackedplot

I have this code for creating stackedplot. But I would like that within plot there were other line in y. As in the figure, I would like value along y-axis, but also the secondary line (in black). How can I do?

tbl = readtable("Cartel5.xlsx","TextType","string");
head(tbl,3)
tbl=tbl(:,1:9)
tbl1 = readtable("Cartel7.xlsx","TextType","string");
head(tbl1,3)
tbl1=tbl1(:,1:9)
tbl2 = readtable("Copy_of_Cartel7.xlsx","TextType","string");
head(tbl2,3)
tbl2=tbl2(:,1:9)
new_table = [tbl, tbl1, tbl2];
vars = {["A","ABR","ab"],["B","BAS","ba"],["C","CAL","cl"],["D","CAM","cm"],["E","EMR","em"],["F","FVG","fr"],["G","LAZ","la"],["H","LIG","li"]}
s=stackedplot(new_table,vars,"LineWidth",2,"FontSize",12,"GridVisible","on")
s.AxesProperties(1).LegendVisible = 'off'
s.AxesProperties(2).LegendVisible = 'off'
s.AxesProperties(3).LegendVisible = 'off'
s.AxesProperties(4).LegendVisible = 'off'
s.AxesProperties(5).LegendVisible = 'off'
s.AxesProperties(6).LegendVisible = 'off'
s.AxesProperties(7).LegendVisible = 'off'
s.AxesProperties(8).LegendVisible = 'off'


s.AxesProperties(1).YLimits = [0 25];
s.AxesProperties(2).YLimits = [0 15];
s.AxesProperties(3).YLimits = [0 5.50];
s.AxesProperties(4).YLimits = [0 5.50];
s.AxesProperties(5).YLimits = [0 5.50];
s.AxesProperties(6).YLimits = [0 5.50];
s.AxesProperties(7).YLimits = [0 5.50];
s.AxesProperties(8).YLimits = [0 5.50];

ax = findobj(s.NodeChildren, 'Type','Axes');
arrayfun(@(s)yline(s,5,'LineWidth',1.5),ax)

Answer 1

[Simon Chan]

Set the YLim and YTick for that particular axis.

X = 0:4:20;
Y = randi(5,6,3);
f = figure;
s = stackedplot(f,X,Y);
s.GridVisible='on';
ax = findobj(s.NodeChildren, 'Type','Axes');
ax(2).YLim = [-1 6];                                % For axis #2 only for demonstration
ax(2).YTick=[0 2 5];
ax(2).YTickLabel = arrayfun(@(x) sprintf('%d',x),ax(2).YTick,'uni',0);

Answer 2

[Seth Furman]

Plotting horizontal lines with stackedplot is now easier with support for multiple table inputs.

Load data

tbl = array2table(magic(3))

tbl = 3×3 table
    Var1    Var2    Var3
    ____    ____    ____

     8       1       6  
     3       5       7  
     4       9       2  

Create table defining horizontal lines

lines = array2table(repmat([5;5],1,width(tbl)))

lines = 2×3 table
    Var1    Var2    Var3
    ____    ____    ____

     5       5       5  
     5       5       5  

Define common x-values

tbl.x = (1:height(tbl))'

tbl = 3×4 table
    Var1    Var2    Var3    x
    ____    ____    ____    _

     8       1       6      1
     3       5       7      2
     4       9       2      3

lines.x = [1;height(tbl)]

lines = 2×4 table
    Var1    Var2    Var3    x
    ____    ____    ____    _

     5       5       5      1
     5       5       5      3

Plot data with horizontal lines

sp = stackedplot(tbl,lines,XVariable="x",XLabel="Row");

Customize chart appearance

sp.GridVisible = "on";
sp.LegendVisible = "off";
for i = 1:numel(sp.LineProperties)
    sp.LineProperties(i).Color(2,:) = [0 0 0];
    sp.LineProperties(i).LineStyle = ["-","--"];
    sp.AxesProperties(i).LegendVisible = "off";
end