i want to made struct <1*11> of s_input for 10 number of nodes(NB_NODES) without pre defining NB_NODES outside of the struct because i have to use this NB_NODES in other functions by giving its reference..

s_input = struct('V_POSITION_X_INTERVAL',[0 30],...%(m)
                 'V_POSITION_Y_INTERVAL',[0 30],...%(m)
                 'V_SPEED_INTERVAL',[0.2 2.2],...%(m/s)
                 'V_PAUSE_INTERVAL',[0 1],...%pause time (s)
                 'V_WALK_INTERVAL',[2.00 6.00],...%walk time (s)
                 'V_DIRECTION_INTERVAL',[-180 180],...%(degrees)
                 'SIMULATION_TIME',500,...%(s)
                 'NB_NODES',10,.....
                 'energy',E);

plz help me that how can i made s_input struct of 1*11 for 10 NB_NODES,but i does not want to define NB_NODES outside the struct...........

Answer 1

[Walter Roberson]

I am not sure what you are trying to do, but perhaps

s_input = struct('V_POSITION_X_INTERVAL',[0 30],...%(m)
'V_POSITION_Y_INTERVAL',[0 30],...%(m)
'V_SPEED_INTERVAL',[0.2 2.2],...%(m/s)
'V_PAUSE_INTERVAL',[0 1],...%pause time (s)
'V_WALK_INTERVAL',[2.00 6.00],...%walk time (s)
'V_DIRECTION_INTERVAL',[-180 180],...%(degrees)
'SIMULATION_TIME',500,...%(s)
'NB_NODES',repmat({10},1,11),.....
'energy',E);

?

Or perhaps

s_input = struct('V_POSITION_X_INTERVAL',[0 30],...%(m)
'V_POSITION_Y_INTERVAL',[0 30],...%(m)
'V_SPEED_INTERVAL',[0.2 2.2],...%(m/s)
'V_PAUSE_INTERVAL',[0 1],...%pause time (s)
'V_WALK_INTERVAL',[2.00 6.00],...%walk time (s)
'V_DIRECTION_INTERVAL',[-180 180],...%(degrees)
'SIMULATION_TIME',500,...%(s)
'NB_NODES',10,.....
'energy',E);
s_input = repmat(s_input, 1, s_input.NB_NODES+1);

[kiranpreet kaur]

sir, but if use ur code i got an error. plz run the files that i send u......reply me as soon as possible.......u have to execute test_execute.m file b'coz i have to apply this mobility model on each and every node

[Walter Roberson]

http://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

[kiranpreet kaur]

sir can u sought out the error that i earlier said u........

[Walter Roberson]

Shrug. That is what happens when you use a struct array.

https://www.mathworks.com/help/matlab/matlab_prog/comma-separated-lists.html#br2js35-6

Your Generate_Mobility code is written to only expect a scalar structure, and breaks when it is passed a struct array.

What do you expect your Generate_Mobility routine to do differently with a 1 x 11 struct array than it would with a scalar struct ?

[kiranpreet kaur]

yes sir i expecting that generate mobility routine to do differently with every node that is present in x 11 struct

[Walter Roberson]

Why should it do any differently? You are sending in identical structure members.

In any case if you want the generation routine to work on structure arrays then you need program it to do so. That might just involve one more outer level of looping. It depends on whether the members interact. Why not just loop calling the generation routine? You can do that with arrayfun