Function polyval - interpolation, MATLAB in Statistics

Function polyval - interpolation:

The function polyval can then be used to compute the polynomial at particular values. For illustration, we could compute at every value in the x vector:

>> curve = polyval(coefs,x)

curve =

63.8857   69.4571   71.3143   69.4571   63.8857

 

This results in y values for each point in the x vector, and stores them in a vector known as curve. Placing all this together, the script below known as polytemp generates the x &y vectors, that fits a second order polynomial through these points, and plots both points and curve on similar figure.

827_Function polyval.png

Posted Date: 10/22/2012 8:47:25 AM | Location : United States







Related Discussions:- Function polyval - interpolation, Assignment Help, Ask Question on Function polyval - interpolation, Get Answer, Expert's Help, Function polyval - interpolation Discussions

Write discussion on Function polyval - interpolation
Your posts are moderated
Related Questions
Advanced File Input and Output: In that section, we saw how to read the values entered by user using the input as well as the output functions disp and fprintf, that shows inf

Sequential Search: A sequential search is completed by looping through the vector element-by-element starting from the beginning, looking for the key. Usually the index of the

Reading from Files: There are many lower level functions which read from files. The function fscanf reads the formatted data into a matrix, by using conversion formats like %s

Input in a While Loop: The script below repeats the procedure of prompting a user, the reading in a positive number, and echo-printing it, as long as the user properly enters

Use of function polyval: The better the curve fit, the more exact these interpolated and extrapolated values will be. By using the subplot function, we can loop to display the

Statistics There are numerous statistical analyses which can be executed on data sets. In MATLAB software, the statistical functions are in the data analysis help topic known a

Properties of the text box - graphics objects: By using get will show properties of the text box, the illustration is as shown below: >> get(thand)   BackgroundColor

Data structure layers: There are many layers in this variable. For illustration,  cyls is the whole data structure, that is a vector of structs  cyls(1) is a separate

Logical errors: The Logical errors are more complicated to locate, as they do not result in any error message. The logical error is a mistake in reasoning by the programmer, b

Need of a nested loop: How would we sum each individual column, rather than getting an overall sum? Answer: The programming technique would need a nested loop in whi