Error using fplot: Warning: Error updating FunctionLine.
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Hi everyone,
I would like to plot the following function:
function ax_max = maxax(ay,v)
if (v <=130/3.6)
ax_max(ay <= 0.8) = -3.5;
ax_max(ay > 0.8 & ay <= 4.5) = -307/74 + 30/37*ay;
ax_max(ay > 4.5) = 0;
else
ax_max(ay < 0.5) = -2.5;
ax_max(ay >= 0.5 & ay <= 2.5) = -25/8 + 5/4*ay;
ax_max(ay > 2.5) = 0;
end
ax_max=abs(ax_max);
end
by using
fplot(@(ay) -maxax(ay, sqrt(30*ay)), [0 5])
I would like to create four subplots varying the number "30" fplot (30, 123, 400, 900). The fplot function works wenn using "900", but with for example "30"I just get an empty plot and the following warning:
"Warning: Error updatin Function Line. The following error was reported evaluating the function in FunctionLine update: In an assignment A(:) = B, the number of elements in A and B must be the same."
Thank you for your help!
1 个评论
Anurag Agarwal
2020-4-4
Sir,
Did you get the solution of it? If yes, please share.
回答（2 个）
HUXIN GAO
2018-10-28
0 个投票
Hello! Recently I have encountered the same problem. Have you solved it? if done, could share it with me. Thanks very much!
2 个评论
madhan ravi
2018-10-28
Ask a question separately @ Huxin with all the necessary details
Anurag Agarwal
2020-4-4
@Huxin Gao, did you get the solution? If yes, please share it.
Thank you
Walter Roberson
2020-4-4
编辑：Walter Roberson
2020-4-4
V = [30, 123, 400, 900];
nV = length(V);
for K = 1 : nV
subplot(1,nV,K)
fplot(@(ay) -maxax(ay, sqrt(V(K)*ay)), [0 5]);
title(sprintf('V = %f', V(K)));
end
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2018-2-21
2020-4-4
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