Callback Function for update plot with multiple functions
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Hi, I need the slider bar to adjust all three of the functions on the plot, but I don't know how to make a callback to update it. Plot picture is attached and c
ode is here:
% 3.131
k = 180; %W/m K
L = 10e-3; %m
t = 1e-3; %m
Tb = 100 + 273; %K
Tinf = 25 + 273; %K
h = linspace(10,1000,20);
m = sqrt(2 .* h ./ (k * t));
M = sqrt(2 .* h .* t .* k) .* (Tb-Tinf);
qfa = M .* (sinh(m .* L)+(h ./ (m .* k)) .* cosh(m .* L)) ./ (cosh(m .*L) + (h ./ (m .*k)).*sinh(m.*L));
qfb = M .* tanh(m.*L);
qfd = M;
f = figure;
plot(h,qfa,'k','DisplayName','qfa'); hold on;
plot(h,qfb,'b','DisplayName','qfb');
plot(h,qfd,'r','DisplayName','qfd');
xlabel('Convection coefficient, h(W/m^2 * K)'); ylabel('Heat rate,qf(W/m)'); title('Heat rate vs h for different boundary conditions');
legend('show')
b = uicontrol('Parent',f,'Style','slider','Position',[81,54,419,50],...
'value',k,'min',15,'max',180);
bgcolor = f.Color;
bl1 = uicontrol('Parent',f,'Style','text','Position',[50,54,23,50],...
'String','15','BackgroundColor',bgcolor);
bl2 = uicontrol('Parent',f,'Style','text','Position',[500,54,23,50],...
'String','180','BackgroundColor',bgcolor);
bl3 = uicontrol('Parent',f,'Style','text','Position',[240,50,100,40],...
'String','Conduction Coefficient, k(W/m K)','backgroundColor',bgcolor);
2 个评论
Walter Roberson
2017-9-23
You have not defined what the slider should do .
Maxsam Donta
2017-9-24
编辑：Maxsam Donta
2017-9-24
回答（2 个）
Rik
2017-9-24
0 个投票
If that k should contain the value of the slider, make sure the slider exist before the first plot and the use k=get(b,'Value').
See https://www.mathworks.com/matlabcentral/answers/292993-continuous-slider-callback-not-updated-handles-in-callback-function and https://www.mathworks.com/matlabcentral/answers/264979-continuous-slider-callback-how-to-get-value-from-addlistener for defining a callback, which is triggered during moving the slider, not only when releasing it.
[EDITED] Try this:
function YourGUI
k = 180; %W/m K
FigH = figure;
handles.gfaPlot = plot(h,qfa,'k','DisplayName','qfa');
hold on;
handles.gfbPlot = plot(h,qfb,'b','DisplayName','qfb');
handles.gfdPlot = plot(h,qfd,'r','DisplayName','qfd');
xlabel('Convection coefficient, h(W/m^2 * K)');
ylabel('Heat rate,qf(W/m)');
title('Heat rate vs h for different boundary conditions');
legend('show')
handles.Slider = uicontrol('Parent',f,'Style','slider', ...
'Position',[81,54,419,50],...
'value',k,'min',15,'max',180, ...
'Callback', {@yourSliderCallback, handles});
bgcolor = f.Color;
uicontrol('Parent',f,'Style','text','Position',[50,54,23,50],...
'String','15','BackgroundColor',bgcolor);
uicontrol('Parent',f,'Style','text','Position',[500,54,23,50],...
'String','180','BackgroundColor',bgcolor);
uicontrol('Parent',f,'Style','text','Position',[240,50,100,40],...
'String','Conduction Coefficient, k(W/m K)', ...
'backgroundColor',bgcolor);
end
function [h, gfa, gfb, gfd] = YourCalculation(k)
L = 10e-3; %m
t = 1e-3; %m
Tb = 100 + 273; %K
Tinf = 25 + 273; %K
h = linspace(10,1000,20);
m = sqrt(2 .* h ./ (k * t));
M = sqrt(2 .* h .* t .* k) .* (Tb-Tinf);
qfa = M .* (sinh(m .* L)+(h ./ (m .* k)) .* cosh(m .* L)) ./ ...
(cosh(m .*L) + (h ./ (m .*k)).*sinh(m.*L));
qfb = M .* tanh(m.*L);
qfd = M;
end
function yourSliderCallback(SliderH, EventData, handles)
k = get(SliderH, 'Value');
[h, gfa, gfb, gfd] = YourCalculation(k);
set(handles.gfaPlot, 'YData', gfa);
set(handles.gfbPlot, 'YData', gfb);
set(handles.gfdPlot, 'YData', gfd);
end
Now the callback of the slider calculates the new values and updates the Y-positions of the lines. The callback is triggered, when the mouse is released. Using the "continuous slider callback" as explained at first in my message would change the value wile the slider is moved already.
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2017-9-23
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