How to curvefit data from a csv file?

I have a dataset of COVID in .csv file, how do I get curvefit GUI or the code to run for that? I want to get x-axis as 'Date' and y-axis as 'Confirmed'?

Answer 1

[Saurabh Kumar]

Hi Saurav,

You can import data from csv file using readmatrix into a matrix form in MATLAB. Select the column from the matrix and use cftool app to generate the curve as shown below.

data =readmatrix('covid.csv'); %assuming csv file name to be 'covid.csv' 
date=data(:2); %assuming date is present in second column 
confirmed=data(:5); %assuming confirmed is present in 5th column 
cftool(date,confirmed) 

Thanks and Regards,

Saurabh Kumar

[Saurav Karmakar]

It showing 'NaN'

[Saurav Karmakar]

Any replies?

[John Miles]

Seems like a simple File -> Load .CSV option would do what 99.9% of users actually want here...?

[John D'Errico]

@John Miles To no surprise, I've NEVER wanted to do exactly that, nor have I seen so many people pleading for that option. So no, it would not be what 99.9% of users would want, just what you want.

A significant problem is it also makes the interface complicated, because a .csv file can contain many things.

The simple answer is to just get used to bringing your data into MATLAB, and then doing whatever you want with it, rather than working from a paradigm that forces you to work directly from (.csv) files. That style of working will be slow and inefficient.

Answer 2

[John Miles]

A significant problem is it also makes the interface complicated

You're killin' me, here