How to read comma separated .txt file in matlab R2018a?

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M
M 2023-2-26
评论： Walter Roberson 2023-2-26
How to read comma separated .txt file in matlab R2018a?
The rows is like this :
And I want only the data which begins in "Sensor1:.#A-R="
Sensor1:.#A-R=-1.00,-20.00,226.00
Sensor2:.#A-R=-13.00,-43.00,297.00
Sensor3:.#A-R=-10.00,-11.00,216.00
Sensor1:.#A-R=-2.00,-18.00,224.00
Sensor2:.#A-R=-15.00,-41.00,298.00
Sensor3:.#A-R=-11.00,-11.00,220.00
Sensor1:.#A-R=-2.00,-17.00,227.00
Sensor2:.#A-R=-15.00,-42.00,298.00
Sensor3:.#A-R=-9.00,-12.00,225.00
Sensor1:.#A-R=-2.00,-18.00,228.00
Sensor2:.#A-R=-15.00,-42.00,297.00
Sensor3:.#A-R=-10.00,-14.00,227.00
Sensor1:.#A-R=-1.00,-21.00,229.00
Sensor2:.#A-R=-14.00,-45.00,297.00
...
...
..
.
.
and so on
I want to store the data which begins in "Sensor1:.#A-R=" in a matrix, (I mean only the number values)

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采纳的回答

Walter Roberson
Walter Roberson 2023-2-26
S = fileread(FILENAME);
S = regexprep(S, '^#A-R=', '', 'lineanchors');
data = cell2mat( textscan(S, '%f%f%f', 'delimiter', ',') );
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M
M 2023-2-26
@Walter Roberson
I tried this and it didnt work
S = fileread(D1);
S = regexprep(S, 'Sensor1:.#A-R=', '', 'lineanchors');
data = cell2mat( textscan(S, '%f%f%f', 'delimiter', ',') );
Walter Roberson
Walter Roberson 2023-2-26
Ran in:
testdata = {
'Sensor1:.#A-R=-1.00,-20.00,226.00'
'Sensor2:.#A-R=-13.00,-43.00,297.00'
'Sensor3:.#A-R=-10.00,-11.00,216.00'
'Sensor1:.#A-R=-2.00,-18.00,224.00'
'Sensor2:.#A-R=-15.00,-41.00,298.00'
'Sensor3:.#A-R=-11.00,-11.00,220.00'
'Sensor1:.#A-R=-2.00,-17.00,227.00'
'Sensor2:.#A-R=-15.00,-42.00,298.00'
'Sensor3:.#A-R=-9.00,-12.00,225.00'
'Sensor1:.#A-R=-2.00,-18.00,228.00'
'Sensor2:.#A-R=-15.00,-42.00,297.00'
'Sensor3:.#A-R=-10.00,-14.00,227.00'
'Sensor1:.#A-R=-1.00,-21.00,229.00'
'Sensor2:.#A-R=-14.00,-45.00,297.00'};
D1 = tempname() + ".txt";
writelines(testdata, D1);
S = fileread(D1);
S = regexp(S, '(?<=^Sensor1:.#A-R=)[^\n]+$', 'match', 'lineanchors');
S = strjoin(S, '\n');
data = cell2mat( textscan(S, '%f%f%f', 'delimiter', ',') );
data
data = 5×3
-1 -20 226 -2 -18 224 -2 -17 227 -2 -18 228 -1 -21 229

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