The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Software » comp.soft-sys.matlab

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: Speed up
Replies: 1   Last Post: Mar 8, 2014 2:20 PM

Advanced Search

Back to Topic List Back to Topic List Jump to Tree View Jump to Tree View   Messages: [ Previous | Next ]

Posts: 1
Registered: 3/8/14
Speed up
Posted: Mar 8, 2014 11:04 AM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply

Hi would appreciate some assistance in speeding up the following code via vectorisation

for h = 0.9:0.05:1.8
for iv = 0.2:0.1:2
for k = 2:520
y(k) = y(k-1)+h*(y(k-1)+0.5*h*y(k-1)*(1-y(k-1)))*(1-y(k-1)-0.5*h*y(k-1)*(1-y(k-1)));
plot(h*(ones(20,1)), y(501:520),'*'), set(gca(),"auto_clear","off")

title('Modified Euler')
xlabel('h'), ylabel('last 20 y')

set(gca(),"grid",[1 1]), set(gca(),"auto_clear","on")

Date Subject Author
Read Speed up
Read Re: Speed up

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.