Plotting a smooth curve

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Muhammadhn Muhammadh Khalid
评论： Muhammadhn Muhammadh Khalid 2020-3-2
Hi there,
I know some basics of matlab, though I'm new to it. I use it only when I need any plot.
Now, I have some data points (x,y), which I have attached here. This is from my model output.
I want to import this file into matlab and plot this as a 2D plot in X,Y. The most important thing is that I need a smooth curve as in the attached figure named "Want.jpg". If I normally plot these points in MS excel, what I'm getting is shown in the figure named "Getting.jpg" and I don't want a plot like this.
Can anyone help me. Thanks in advance.
Cheers.

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Meg Noah
Meg Noah 2020-1-13
编辑：Meg Noah 2020-1-13
First, I added a header to the xlsx file so readtable can be used properly.
myData = readtable('Data_help.xlsx');
figure()
plot(myData.x,myData.y,'+')
hold on;
ywant = 0:0.01:1;
P = polyfit(myData.y,myData.x,6);
xwant = polyval(P,ywant);
plot(xwant,ywant)
SamplePolyfit.png
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Muhammadhn Muhammadh Khalid
Muhammadhn Muhammadh Khalid 2020-1-13
Oh it's the 1D interpolation. I have been looking at the documentation of 'interp'. Thanks Meg Noah.
'Smooth' seems an interesting operator. I'll look for that paper as well. Thanks.
Muhammadhn Muhammadh Khalid
Muhammadhn Muhammadh Khalid 2020-3-2
Hi Meg Noah, I' m trying the same thing with the attached data set. But ending up in a more curvy plot. I need a smooth plot similar, but better, than the attached figure. Thanks

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