Function runs in one script but not another ?

working on a function about concentration, works fine in its own script conc.m but when i cpoy and paste to another script where i need it it doesn't plot a graph.

heres the function:

function[] = conc()

v = 0.00001 ;

D = 0.0000001 ;

t = 86400 ;

X = 0 : 0.01 : 2 ;

C = (1/(sqrt(4*pi*D*t)))*exp((-(X-v*t).^(2))/(4*D)) ;

plot (X, C, 'r-')

title ('Concentration of substance with respect to distance from source')

xlabel ('distance from source, m')

ylabel ('concentration, mol/l')

end

any help much appreciated

Answer 1

[Star Strider]

Vectorise its calculation, then call it —

conc

function[] = conc()
 
v = 0.00001 ;
D = 0.0000001 ;
t = 86400 ;
X = 0 : 0.01 : 2 ;
 
C = (1/(sqrt(4*pi*D*t))).*exp((-(X-v.*t).^(2))/(4*D)) ;
 
plot (X, C, 'r-')
 
title ('Concentration of substance with respect to distance from source')
xlabel ('distance from source, m')
ylabel ('concentration, mol/l')
 
end

See Array vs. Matrix Operations for details.