try to manage a dynamic list of classinstances
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hi its me again, i figured a lot out already thanks to your help, but there are still some misteries. i got this:
classdef node<handle
properties
x;
y;
bearing=0;
end % properties
methods
function obj = node(x,y)
obj.x=x;
obj.y=y;
end%functions
end%methods
end %class
and this:
classdef manlists
properties
nodelist={}
stablist={}
materiallist={}
formlist={}
end
methods
function f = manlists()
f.nodelist={node(1,2);node(2,3)};% as a try, and here works the node instance
f.stablist={};
f.materiallist={};
f.formlist={} ;
end
function h = grN(obj)
h = size(obj.nodelist,1);
end
function h = AddNode(a,b)
h.nodelist{end+1} =node(a,b)
end
end
end
but it doesnt work like i expect it to
in the command window it works
>> man = manlists;
>> man.nodelist{end+1}=node(1,2)
man =
manlists
Properties:
nodelist: {3x1 cell}
stablist: {}
materiallist: {}
formlist: {}
Methods
but inside the class i get this error:
>> man.AddNode(1,2)
??? Error using ==> AddNode
Too many input arguments.
i tried arround for several hours but i cant figure it out please help
thanks
3 Commenti
Daniel Shub
il 25 Mar 2012
It is also strange to me that nodelist is a cell array instead of an array of class node.
Risposta accettata
Daniel Shub
il 25 Mar 2012
The call
man.AddNode(1,2)
is converted behind the scenes to
AddNode(man, 1, 2)
which has three arguments, but AddNode only takes 2 arguments. What I think you "want" is
function h = AddNode(h,a,b)
Più risposte (1)
per isakson
il 25 Mar 2012
Try
man = manlists;
man.nodelist(end+1) = node(1,2);
man = man.AddNode(1,2);
man.grN
with these two classes
classdef node < handle
properties
x;
y;
bearing=0;
end % properties
methods
function this = node(x,y)
this.x=x;
this.y=y;
end%functions
end%methods
end %class
classdef manlists
properties
nodelist = node.empty
end
methods
function this = manlists()
this.nodelist(end+1:end+2,1)=[ node(1,2); node(2,3)];
end
function sz = grN( this )
sz = size( this.nodelist, 1 );
end
function this = AddNode( this, a ,b )
this.nodelist(end+1) = node( a, b );
end
end
end
2 Commenti
Daniel Shub
il 25 Mar 2012
My guess is that at some point Wu is going to subclass node and therefore need to use a heterogeneous array. As it stands now, I like your way with standard arrays.
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