Why a field is replaced by next field when corresponding function is being called within a loop?

parameter = string(["Length","Width"]);
for m = 1 : length(parameter)
    [SL_CI,DL_CI] = Condition_Index (file_list_damage,damageinfo_selected_yr,increment_vector,increment(m),(parameter{m));% 
plot(x,SL_CI);
end

function [SL_CI,DL_CI] = Condition_Index (file_list_damage,damageinfo_selected_yr,increment_vector,increment,parameter)
%%some other calculation steps which gives the input for following function call%%
SL_CI.(parameter{m}) = UK_CI_SL(file_list_damage,damageinfo_selected_yr,DL_CI,ImpFactor); %this calls out a function which returns a double array%%
end

% now this code gives me a struct SL_CI with only one field 'Width',
% replacing the field 'Length'%%
%% I want both the field stored, if you guys have any idea on this, I would greatly appreciate it%%

Answer 1

[Florian Bidaud]

Hi,

You're using the same [SL_CI,DL_CI] to store both fields, so the last one override the first one.

You should have storing variables incrementing with m like :

for m = 1 : length(parameter)
    [SL_CI(m),DL_CI(m)] = Condition_Index (file_list_damage,damageinfo_selected_yr,increment_vector,increment(m),(parameter{m}));% 
plot(x,SL_CI);
end

I don't know what if the output type, so you might have to use a cell array, but this is the idea.

You shouldn't have m in the function deifinition

function [SL_CI,DL_CI] = Condition_Index (file_list_damage,damageinfo_selected_yr,increment_vector,increment,parameter)
%%some other calculation steps which gives the input for following function call%%
SL_CI.(parameter) = UK_CI_SL(file_list_damage,damageinfo_selected_yr,DL_CI,ImpFactor); %this calls out a function which returns a double array%%
end