Check out this simple function.. you should be able to copy and paste it into a new file, save the file with the name simpleProgrammaticSlider.m, and execute it. It should provide us with some code and functionality to begin discussions that are more specific. Have a look, and let me/others looking at this post what clarifications can be made.
function simpleProgrammaticSlider
% SIMPLEPROGRAMMATICSLIDER shows a plot of a line y = m*x + b and allows
% the user to change m by moving a slider.
% when the slider is at 1, m = mMax
mMax = 5;
% when the slider is at 0, m = mMin
mMin = -5;
% initial value for m
m = mMax;
% initial value for b
b = 1;
% specify limits for axes
axLimits = [-2,2,-5,5];
x = linspace(-2,2);
y = m*x+b;
% create figure and position it
f = figure('toolbar','none',...
'menubar','none',...
'Position',[680, 678, 560, 300]);
% create axes and position it
axes('Position',[.5 .15 .4 .75]);
% add initial plot and fix axis limits
plot(x,y);
axis(axLimits);
% add slider to figure
s1h = uicontrol('Style', 'slider',...
'Units', 'Normalized',...
'Value', 1,...
'Position', [.15,.15,.1,.8],...
'Callback', @sliderCallback);
% this nested function is called every time the slider is clicked
function sliderCallback(hObj,~)
sv = get(hObj,'Value'); % slider value between 0 and 1
m = sv*(mMax-mMin) + mMin; % new slope of the line
y = m*x+b;
plot(x,y);
axis(axLimits);
end
end
