The graph I'm trying to create is empty

Question

Lothan Miranda 2021-3-3

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/761446-the-graph-i-m-trying-to-create-is-empty

编辑： KALYAN ACHARJYA 2021-3-3

Hi,

I'm new to matlab and am struggling to plot a specicif graph. I'm trying to plot voltage against time. It starts at 50mV at 0s. After each msec, it increases by 15% as compared to its value 1 msec earlier. I tried a few appraoches and kept getting errors. I finally tried this approach with no errors but the graph is blank.

for t = 0:1:20
    y  = 50*1.15^t;
    
    
    figure(1)
hold off
plot(t,y,'g')
title('Voltage vs Time')
xlabel('Time(ms)')
ylabel('voltage(mV)')
end

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Answer 1

KALYAN ACHARJYA 2021-3-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/761446-the-graph-i-m-trying-to-create-is-empty#answer_638026

编辑：KALYAN ACHARJYA 2021-3-3

在 MATLAB Online 中打开

Here loop can be avoided (Recomended)

t = 0:1:20
y =50*1.15.^t;
figure,plot(t,y,'g')
title('Voltage vs Time')
xlabel('Time(ms)')
ylabel('voltage(mV)')

Using Loop: Read about the array, you need to store different y values (with respect to invividual t).

t=0:1:20;
y=zeros(1,length(t)); % Preallocation memory
for i=1:length(t)
y(i)=50*1.15.^t(i);
end 
plot(t,y,'g')
title('Voltage vs Time')
xlabel('Time(ms)')
ylabel('voltage(mV)')