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MATLAB Onramp 14.1 Project- Stellar Motion Task 7

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Prem Pankaj
Prem Pankaj 2020-7-11
回答： leela krishna 2024-5-20
Modify the Task 2 & 7 section of the script so that it performs the red shift calculation on the second star in spectra, not the sixth.
I have changed s to the second column (s= spectra(:,2)), and that is right.
How do I get the correct values of lambdaHa and speed?

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回答（5 个）

VAIBHAV PANDEY
VAIBHAV PANDEY 2020-9-20
s = spectra(:,2)
[sHa,idx] = min(s)
lambdaHa = lambda(idx)
z = lambdaHa/656.28 - 1
speed = z*299792.458
  5 个评论
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Deeksha
Deeksha 2023-9-4
tast 2 & 7
s=spectra(:,2)
Did you store the second column of spectra in s?------> this error is not remove..why?

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Othello Deemi
Othello Deemi 2022-8-12
Could some kindly help me with Tasks 2&7 on the MATLAB Onramp on the topic "Project > Stella Motion"?
Here is my answer:
s = spectra(:,2)
[sHa, idx] = min(s)
lambdaHa = lambda(idx)
z = (lambdaHa/656.28) - 1
speed = z*299792.458
I cannot go further beyond this point. Many thanks.
leela krishna
leela krishna 2024-5-20
[sHa,idx]=min(s)
lambdaHa=lambda(idx)
hold on
x=lambdaHa
y=sHa
plot(x,y,'rs','MarkerSize',8)
Prabhan Purwar
Prabhan Purwar 2020-7-14
Hi,
The correct values for lambdaHa and speed are calculated using Task 4. At every Task whole of the script runs not the portion of the same.
Thanks
PERUMALSAMY ROHANKUMAR
[sHa,idx] = min(spectra(:,2))
to
[sHa,idx] = min(spectra)
  2 个评论
Ganisher
Ganisher 2023-2-10
how will be the next step's code?
Did you add a point to the existing axes?
Add a point to the existing axes by plotting x = lambdaHa, y = sHa as a red square ("rs") with a marker size ("MarkerSize") of 8.

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