Remove non-finite values while decimating
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I was able to decimate 8 other identical (or so I thought) files, but this one hit an error. Code and error below:
%% Set path
cd 'C:\folder'
%% Load data
data = readtable('data.csv');
%% Decimate and then convert to table format
data50_X = decimate(data{:,4},2);
Error using filtfilt
Expected input to be finite.
Error in filtfilt>efiltfilt (line 123)
validateattributes(x,{'double','single'},{'finite','nonempty'},'filtfilt');
Error in filtfilt (line 102)
y = efiltfilt(b,a,x);
Error in decimate (line 157)
odata = filtfilt(b,a,idata);
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采纳的回答
Image Analyst
2023-11-1
Try this:
data = readtable('data.csv');
goodRows = isfinite(data{:, 4});
data = data(goodRows, :); % Extract only the good/finite values rows.
9 个评论
Image Analyst
2023-11-9
Sorry, you need another argument for all to make it apply across columns. Try this:
%% Load in your data (this may take a while, depdending on the size of the file)
data = readtable('small_data.csv');
%% Decimate and then convert to table format
goodRows = all(isfinite(data{:, 4:6}), 2);
data = data(goodRows, :) % Extract only the good/finite values rows
更多回答(1 个)
Matt J
2023-10-31
编辑:Matt J
2023-10-31
Likely, there are NaNs in your data that you have to remove.
find(~isfinite(data{:,4}))
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Matt J
2023-11-1
find(~isfinite(data{:,4})) gives the locations of the bad data. You can go there and see what those values are, and either remove them or replace them with something else.
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