Perhaps use hold on?
h=figure(1);
hold on
f_vorlage(h)
tryyy(h)
In addition in your tryyy.m have it grab the current plot handle with gca
function tryyy(fig)
h=gca
ax = findobj(h, 'type', 'axes');
if isempty(ax)
error('Your figure does not have any existing axes')
end
if length(ax) > 1
error('Your figure has more than one axes')
end
x=[52.23;52.45;56.32;55.48;56.32;53.39;55.53;53.67;57.89]
x=x'
plot(x)
Using a random set of values it looks like it plots properly
function tryyy(fig)
h=gca
ax = findobj(h, 'type', 'axes');
if isempty(ax)
error('Your figure does not have any existing axes')
end
if length(ax) > 1
error('Your figure has more than one axes')
end
x=200*rand(1,10000)-50;
plot(x)
