How to plot a graph in nm

Question

laura byrne 2021-2-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/736022-how-to-plot-a-graph-in-nm

回答： Daniel Pollard 2021-2-4

I want to plot a graph with wavelength on the x axis but when i input the wavelength values I convert them to meters for the calculation of y axis values. Is there a way to have the wavelength values in nm without adding a second matrix? This is what I have

theta = 10
wavelength_m = [500e-09:10e-09:700e-09]
wavelength_nm = [500:10:700]
m = 1
d = (m.*wavelength_m)/sin(theta)
spatial_frequency = 1./d
plot(wavelength_nm,spatial_frequency,"r--")
xlabel("Wavelength (nm)")
ylabel("Spatial Frequency (/m)")

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Answer 1

Daniel Pollard 2021-2-4

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/736022-how-to-plot-a-graph-in-nm#answer_614617

在 MATLAB Online 中打开

Your method works perfectly well. An alternative option would be

theta = 10
wavelength = [500:10:700]
m = 1
d = (m.*wavelength)/sin(theta)
spatial_frequency = 1./d
plot(wavelength*1e-9, spatial_frequency,"r--")
xlabel("Wavelength (nm)")
ylabel("Spatial Frequency (/m)")