How i can i Ensure that my 2 vectors have the same size?!

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Amil Ali 2023-5-1

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编辑： Jon 2023-5-1

I have the following code (below) and want that DAPEAK_IN (1X86) and DAPEAK_OUT (1X63) have the same size i tried using this code

%Calculate daily averages from CleanPeaks, Max Threshold set to 2000, where 2 is values in and 4 is values out
DAPeaks_in = DailyAverageNY(CleanPeaks_in,2,5,100); 
DAPeaks_out = DailyAverageNY(CleanPeaks_out,4,5,100);
    DAPeaks_in = DAPeaks_in(1:size(DAPeaks_out,1),:); % adjust the size of DAPEAKS_IN to DAPEAKS_OUT and vice versa
    DAPeaks_out = DAPeaks_out(1:size(DAPeaks_in,1),:)
 

however the stil have the same size as before DAPEAK_IN (1X86) and DAPEAK_OUT (1X63) - any suggestion on how to achevie this FYI i have not tried any function for it

best regards - Amil Ali

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Answer 1

Jon 2023-5-1

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编辑：Jon 2023-5-1

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If you want DAPEAK_in to have the same dimension as DAPEAK_out then I assume you want both of them to have the same dimesion as the smallest of the two. Otherwise you would somehow have to add values, or just put zeros to lengthen the shorter one. You could do something like this (I have assumed, as in your description that both are row vectors):

%Calculate daily averages from CleanPeaks, Max Threshold set to 2000, where 2 is values in and 4 is values out
DAPeaks_in = DailyAverageNY(CleanPeaks_in,2,5,100); 
DAPeaks_out = DailyAverageNY(CleanPeaks_out,4,5,100);
% determine number of elements in the shorter one
nKeep = min(numel(DAPeaks_in),DAPeaks_out); 
% adjust the size of DAPEAKS_IN to DAPEAKS_OUT and vice versa
% set them both to the same length
DAPeaks_in = DAPeaks_in(1,1:nKeep);
DAPeaks_out = DAPeaks_out(1:nKeep);

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Stephen23 2023-5-1

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I guess you intended:

nKeep = min(numel(DAPeaks_in),numel(DAPeaks_out));
%                             ^^^^^^           ^

Jon 2023-5-1

编辑：Jon 2023-5-1

Yes, good catch, thanks! Usually I run my examples to test them for syntax and other errors. I should have done that here too.

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Answer 2

KALYAN ACHARJYA 2023-5-1

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编辑：KALYAN ACHARJYA 2023-5-1

在 MATLAB Online 中打开

Hope I have understand the question- Here is the example

DAPEAK_IN=randi([1,100],[1,randi(200)]); %Random data 
size(DAPEAK_IN)
ans = 1×2
     1    65
DAPEAK_OUT=randi([1,100],[1,randi(200)]); %Random data 
size(DAPEAK_OUT)
ans = 1×2
     1    88
if size(DAPEAK_IN,2)>size(DAPEAK_OUT,2)
    DAPEAK_IN=DAPEAK_IN(1:size(DAPEAK_OUT,2));
else 
    DAPEAK_OUT=DAPEAK_OUT(1:size(DAPEAK_IN,2));
end 
size(DAPEAK_IN)
ans = 1×2
     1    65
size(DAPEAK_OUT)
ans = 1×2
     1    65

The size can also be done with extrapolate, actually representing the data set. Here I have foreced the data in particular range, the remaining will be lost which may be meningful data, please look on that point.