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How to plot a smooth CDF plot?

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Hydro
Hydro 2017-9-16
回答： Image Analyst 2017-9-16

Hello, I have bias corrected RCM data with observation. I would like to see the plots of raw RCM (RRCM), a bias-corrected RCM (CRCM), and the observation (EC). Below is my code for the cdf plots however, it is kind of stairs (Plot-1). is there any other way to further smooth the cdf plot such as the one shown here (https://www.google.ca/search?q=bias+corrected+cdf+plot&dcr=0&source=lnms&tbm=isch&sa=X&ved=0ahUKEwint5PqjqrWAhXL3YMKHcbfCpMQ_AUICigB&biw=1760&bih=864#imgrc=vsxVc4nybcsOhM)

figure(3)
ecdf(EC);
hold on
ecdf(RGCM);
ecdf(CGCM);
hold off
axis tight
xlabel('Mean Temp')
ylabel('CDF')
legend('EC','RAW RCM','Corrected RCM')

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采纳的回答

Image Analyst
Image Analyst 2017-9-16
Well, that's your actual cdf given your data. If you want a smoother curve, use more data points, or fit a curve through it, though fitting will no longer reflect your actual data anymore. Attached are some examples of non-linear fitting.

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