Fit my Data to a pattern with some unknown parameters

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Gopichandh Danala 2019-11-20

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评论： dpb 2019-11-20

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Hi,

I have a array with some noise and want to correct it to a know pattern (line-like).

Here is an example:

% type-1
my_array1 = [1,2,3,4,5,6,7,8,9,10,11,...
    12,13,14,15,16,17,18,19,20,21,22,...
    23,23,22,21,20,19,19,17,16,16,14,14,...
    35,10,10,9,8,40,41,42,43,44,45,46,...
    1,2,3,4,5,6,7,8,9,10,11,12,13,14];
% type-2
my_array2 = [1,2,3,4,5,6,7,8,9,10,11,...
    12,13,14,15,16,17,18,19,20,21,22,...
    22,22,22,21,20,19,19,17,16,16,14,14,...
    35,10,10,9,8,40,41,42,43,44,45,46,...
    1,2,3,4,5,6,7,8,9,10,11,12,13,14];
my_arr_len = length(my_array1);
node = 23; % not known - needed to find
pattern = [1:node,node:-1:1];
len_pattern = length(pattern);
rem_len = my_arr_len - len_pattern;
pattern = [pattern, 1:rem_len];
figure,
subplot(121), plot(my_array1,'r')
hold on, plot(pattern, 'g--'), hold off
title('type 1')
subplot(122), plot(my_array2,'b')
hold on, plot(pattern, 'g--'), hold off
title('type 2')