how can i use for loop to solve the below problem

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Christopher Achor
Christopher Achor 2020-5-22
评论： Gemma Lyn 2024-1-13
Add an if statement to the for loop body. If speed(c) is less than or equal to 0, create a loglog plot of s against lambda using a dashed line (--).
After the if statement, add the command hold on so that only one plot is created.
the below didnt work for me:
if speed(c) <= 0
loglog(lambda,s,"--")
end
hold on
end
  3 个评论
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Saurav Bhagasra
Saurav Bhagasra 2022-3-4
for c = 1:7
s = spectra(:,c)
if speed(c) <=0
loglog(lambda,s,"--")
end
hold on
end

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采纳的回答

Abdolkarim Mohammadi
You have used an extra end. Delete the end in the last line. I think you must use hold on before your for loop and place the if inside the for loop.

更多回答（1 个）

Damrudhar
Damrudhar 2023-1-20
Add an else statement. If speed(v) is greater than 0, create a plot of s against lambda using a line width of 3.
After the for loop, enter hold off.
  1 个评论
Gemma Lyn
Gemma Lyn 2024-1-13
for v = 1:7
s = spectra(:,v)
if speed(v) <=0
plot(lambda,s,"--")
else speed(v) >0
plot(lambda,s,LineWidth=3)
end
hold on
end
hold off

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