fplot showing different curve to plot
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Hey there! I tried plotting a simple function using two ways:
- By creating an anonymous function and using fplot() to produce the plot
- By simply creating a normal function and using plot() to produce the plot
Here's the code for the first:
clear all
close all
clc
M = 100;
p_b = 2;
Q = @(p_a) M./(p_a + p_b);
figure(1)
fplot(Q, [0 35])
ylim([0 30])
xlim([0 25])
Here's the code for the second:
clear all
close all
clc
M = 100;
p_b = 2;
p_a = [0:0.1:35];
Q = M./(p_a+p_b);
figure(2)
plot(Q,p_a)
ylim([0 30])
xlim([0 25])
The curves look identical but they're actually different if you use the data tips on the figures and compare them (see photo below)
Anyone know why this is? I'm a bit lost :(
采纳的回答
plot(p_a,Q)
instead of
plot(Q,p_a):
M = 100;
p_b = 2;
Q = @(p_a) M./(p_a + p_b);
hold on
fplot(Q, [0 35])
ylim([0 30])
xlim([0 25])
p_a = [0:0.1:35];
Q = M./(p_a+p_b);
plot(p_a,Q)
hold off
grid on
2 个评论
PCR_7
2023-4-6
plot(x-values,y-values)
fplot(function handle or symbolic function of x,[minimum x-value maximum x-value])
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