How to plot outputs from an equation with user inputs?

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Bastion 2011-8-29

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回答： Mohit Sharma 2016-10-1

I'm trying to plot a graph (xy-plot) in MATLAB GUI. I have coded an equation along with input boxes for user inputs (the variables). So after the user input the many variables the program will calculate the answers. I have time 1 and time 2 as a range for the plot in the x-drection. Now I want to code it so it will plot all the points between time 1 and time 2.

What is the best way to go about this in GUI?

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Oleg Komarov 2011-8-29

Please delete your previous question since this duplicate it's better phrased.

Bastion 2011-8-29

Yeah it's gone

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Answer 1

Paulo Silva 2011-8-29

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https://ww2.mathworks.cn/matlabcentral/answers/14688-how-to-plot-outputs-from-an-equation-with-user-inputs#answer_19958

在 MATLAB Online 中打开

Oleg already gave you all the clues you need

T1=1;T2=10;NPoints=5;
u=10;v=20;w=1; %some inputs to your formula
t=linspace(T1,T2,NPoints);
c=u*t+v*(t/10)+w*t.^2; %your concentration formula, I made it up
plot(t,c,'*') %just the points
%plot(t,c) %line joining the points 
%plot(t,c,'r*');hold on;plot(t,c); hold off %points and line

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Bastion 2011-8-31

Thanx I get it now

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Answer 2

Oleg Komarov 2011-8-29

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https://ww2.mathworks.cn/matlabcentral/answers/14688-how-to-plot-outputs-from-an-equation-with-user-inputs#answer_19953

在 MATLAB Online 中打开

Let's say you have these two ranges:

time1 = now-9;
time2 = now;

% And you want to create 100 equispaced points on the range [time1 time2]

x = linspace(time1,time2,100);
y = f(x);

where f() is the equation you have coded, then plot:

plot(x,y)

If you don't what a specific function does, use the help or type in the command window:

doc functionName

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Bastion 2011-8-29

I don't know how to word this but I'm trying to plot concentration to time, which is my output as a range in the y-direction.

C(x,y,z,t) etc.

t (time) is a function of C. When I input 2 values for t, I wrote the code so it would display 2 output for the C range. So if I input T1=1 and T2=10 I will get C1=X and C2=Y. I want to plot this two ranges with a set amount of points.

Bastion 2011-8-31