Changes

Jump to navigation Jump to search
580 bytes added ,  09:28, 17 February 2017
Line 98: Line 98:  
  plot(x1,y)
 
  plot(x1,y)
 
  grid minor on  
 
  grid minor on  
 +
 +
* '''Demo of how to suppress a warning about converting from floating point numbers to symbolic numbers.
 +
 +
## Demo of how to use a number (which was calculated in an octave
 +
## variable) in a symbolic calculation, without getting a warning.
 +
 +
## use octave to calculate some number:
 +
a=pi/2
 +
 +
## now do some work with the symbolic pkg
 +
syms x
 +
    f = x * cos(x)
 +
    df = diff(f)
 +
 +
## Next get the number into a symbolic variable 
 +
## convert to string first 
 +
    aa=mat2str(a)
 +
## and now to a symbolic variable.   
 +
    ww=sym(aa)
 +
## and now use it 
 +
    vpa(subs(df, x, ww), 28)
 +
 
</source>
 
</source>
17

edits

Navigation menu