How to plot 3_D graph of function K*exp(-r^2/R^2) where "r" is the radial cordinate and "R" is the variation of R along the thickness

[KSSV]

What have you attempted?

[ALOK]

steps:

as per the given conditon r is the radial co-ordinate =r^2=x^2+z^2

d=0.0035;

R=0.0019;

r=0.004;

q=1200;

f=@(x) (R-(((R-r).*(d-x))./d));{where re is R, and r is the ri}

r0=f(x);

Qfun=@(y,z) q.*exp(-(y.^2+z.^2)./m.^2);

Qhandle = fsurf(Qfun,[-5 5 -5 5]);

[ALOK]

Yi is taken as zero and Ye is d

[Dyuman Joshi]

Is this the output you want to achieve?

d=0.0035;
R=0.0019;
r=0.004;
q=1200;
f=@(y) (R-(((R-r).*(d-y))./d));%{where re is R, and r is the ri}
Qfun=@(x,y) q.*exp(-(x.^2+y.^2)./f(y).^2);
Qhandle = fsurf(Qfun,[-5 5 -5 5]);

[ALOK]

this i want

Answer 1

[Ganapathi Subramanian]

Hi Alok,

It is my understanding that you want to plot a 3D graph for the given function. Use ‘fsurf’ function to plot 3D graph for the given variables ‘r’ and ‘R’ and the function.

fsurf(@(r,R)  f)  
% where r,R are the variables and f is the function.

Please refer to the documentation for more information regarding ‘fsurf’

https://www.mathworks.com/help/matlab/ref/fsurf.html