plot stem in vertical position

x = linspace(-2*pi,2*pi,100); 
y = 4*pi*randn(1,100)-2*pi; 
figure;
 

stem(x,y, 'LineWidth', 3)

% Set up figure properties:
% Enlarge figure to full screen.
set(gcf, 'Units', 'Normalized', 'OuterPosition', [0 0 1 1]);
% Get rid of tool bar and pulldown menus that are along top of figure.
set(gcf, 'Toolbar', 'none', 'Menu', 'none');
% Give a name to the title bar.
set(gcf, 'Name', 'Stem Test', 'NumberTitle', 'Off')

hi, i want to plot it in vertical mode

Answer 1

[Voss]

x = linspace(-2*pi,2*pi,100); 
y = 4*pi*randn(1,100)-2*pi; 

% Set up figure properties:
% Enlarge figure to full screen.
% Get rid of tool bar and pulldown menus that are along top of figure.
% Give a name to the title bar.
figure('Units', 'Normalized', 'OuterPosition', [0 0 1 1], 'Toolbar', 'none', ...
    'Menu', 'none', 'Name', 'Stem Test', 'NumberTitle', 'Off');
ax = gca();
hold(ax,'on');
box(ax,'on');
ax.YDir = 'reverse';
ax.ColorOrder = ax.ColorOrder(1,:);
plot(ax,y,x,'o','LineWidth',3)
N = numel(x);
xx = [x;x;NaN(1,N)];
yy = [y;zeros(1,N);NaN(1,N)];
plot(ax,yy(:),xx(:),'LineWidth',3)
xline(ax,0)

[shamal]

excuse me but it possibile green color the number positive and red color the number negative?

i try to do it but i can't

[Voss]

Here's one way (points with y == 0 are blue):

x = linspace(-2*pi,2*pi,100); 
y = 4*pi*randn(1,100)-2*pi; 

figure('Units', 'Normalized', 'OuterPosition', [0 0 1 1], 'Toolbar', 'none', ...
    'Menu', 'none', 'Name', 'Stem Test', 'NumberTitle', 'Off');
ax = gca();
hold(ax,'on');
box(ax,'on');
ax.YDir = 'reverse';

pos = y > 0;
neg = y < 0;
zer = ~pos & ~neg;

plot(ax,y(pos),x(pos),'go','LineWidth',3)
plot(ax,y(neg),x(neg),'ro','LineWidth',3)
plot(ax,y(zer),x(zer),'bo','LineWidth',3)

N = nnz(pos);
xx = [x(pos);x(pos);NaN(1,N)];
yy = [y(pos);zeros(1,N);NaN(1,N)];
plot(ax,yy(:),xx(:),'g','LineWidth',3)

N = nnz(neg);
xx = [x(neg);x(neg);NaN(1,N)];
yy = [y(neg);zeros(1,N);NaN(1,N)];
plot(ax,yy(:),xx(:),'r','LineWidth',3)

N = nnz(zer);
xx = [x(zer);x(zer);NaN(1,N)];
yy = [y(zer);zeros(1,N);NaN(1,N)];
plot(ax,yy(:),xx(:),'b','LineWidth',3)

xline(ax,0)

[shamal]

thanks you...very good

[Voss]

You're welcome!

Answer 2

[Walter Roberson]

One method is to create a hgtransform and use that as the parent axes of the stem() call. Then set the Matrix property of the hgtransform to rotate the stem plot; it is often useful to use makehgtform to create the rotation matrix.