Hello
I would to have an udf that presentes the evolution of the daily radiation (by collecting the x and y (of a curve of an article for validation) from the "GET DATA"). At First, I drew my curve on excel, I obtained my trend curve and then the equivalent equation in the form of a polynomial of a certain degree ( I, who controls the degree to have a trend line close to the mine, genarally I had a degree that is equal to or greater than 4).
The problem is that when I drew the equation on matlab to confirm the tracing of the curve, I would have a different curve to the one I have in excel. What will be the resolution if someone of you has already had the same problem?
Thank you
cordially