Galapagos for beginners

Replies to This Discussion

Permalink Reply by Artyom Maxim on February 8, 2013 at 9:58am

Just try typing "grasshopper galapagos" into Google, the first link to video will give you what you want.

Permalink Reply by Gabriel Áh on February 8, 2013 at 1:21pm

thanks smarty

Permalink Reply by Chris Tietjen on February 8, 2013 at 9:58am

Dbl-Clk the Galapagos component.  In the first panel that appears make sure that Fitness is set to 'Minimize'.  Click on the Solvers Tab and then click on Start Solver.  Let the solver run for a bit and you'll see that the values start to level off.  Stop the solver when you've gotten a value that is within your tolerance of acceptability.  In this example Galapagos is looking for the circle radius that will give a circle area equal to the area of the square.  The Fitness function is comparing the two areas and Galapagos is looking at the minimum difference between them.  You can hook the Genome to as many sliders as you want but you can only have one Fitness function which must feed into a Parameter component before being connected to Galapagos. 

Attachments:

• 9_GalapagosExample.gh, 8 KB

Permalink Reply by Vicente Soler on February 8, 2013 at 11:02am

Actually, in this case when you click on Start Solver a message box will pop up with the following text: "Seriously just use pi r squared."

Permalink Reply by Chris Tietjen on February 8, 2013 at 12:52pm

Of course but it's not about the actual solution.