Interpolate among Datasets so one set matches the other
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I have two datasets with different dimensions. Needs to be matched somehow and one dimension needs to be interpolated to fit the dimension of the second data set
My first dataset is X,Y (2D) and my second dataset is only Y (1D). I need to somehow combine those two datasets. Like trying to plug in the Y axis data from the second dataset to the first set which is 2D. So, the X axis from the first set will be interpolated to match the data of the new Y axis data (second set). Am I clear?
回答 (2 件)
the cyclist 2019 年 10 月 30 日
% Data from your file that has both x and y
x1 = [2 3 5];
y1 = [1 2 3];
% Data from your file that has only y
y2 = [1.5 2.5];
% Interpolate the set of x data in based on the above.
x2 = interp1(y1,x1,y2)
Here is a simple example using the interp1 function. I'm not certain if this is what you mean.
If you look at that documentation page, note that the use of "x" and "y" variables are swapped compared to what is written here, because the normal convention is that y is dependent on x, but that is not what you have described in your question.
If this doesn't do what you want, or if it is unclear, then I suggest you actually load your data from Excel into MATLAB, save to a *.mat file, and upload those data here.
MOHD UWAIS 2020 年 7 月 26 日
Thanks for your response.
Actually my problem is to find the fwhm(s) of large number of curve like following. So i require the interpolation values of x corresponding to average y values to write the code (because x values do not lie exactly y data points in average of y) . There are exist two values of x correspondinfg to single average value of y in a one curve (therfore sample point is not unique).
i looking forwrd.