Calling text file in matlab
5 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
muhammad ismat
am 9 Jun. 2015
Kommentiert: muhammad ismat
am 14 Jun. 2015
if i have text file that has three column say
1 2 1
3 1 1
2 3 1
and also have a matrix s =
[0.3 0.4 0.6
0.1 0.5 0.7
0.2 0.11 0.9]
firstly: with respect to text file, i want to consider first column as i and second column as j then if the third column equal 1 then put its corresponding value in matrix s in new array say A else put remaining value in matrix s in new another array say B.
i.e i want this result
A=[0.4, 0.2, 0.7] B=[0.3, 0.6, 0.1, 0.5, 0.11, 0.9]
2 Kommentare
Guillaume
am 9 Jun. 2015
Where do the values go if the third column is not 1? At present your rule is:
coordinate is present and third column is 1 -> put in A
coordinate not present -> put in B
what is the rule for
coordinate is present and third column is not 1 -> ??
Akzeptierte Antwort
Andrei Bobrov
am 9 Jun. 2015
Bearbeitet: Andrei Bobrov
am 9 Jun. 2015
ii = [1 2 1
3 1 1
2 3 1];
s = [0.3 0.4 0.6
0.1 0.5 0.7
0.2 0.11 0.9];
[x,y,z] = size(s);
ij = num2cell(ii,1);
idx = sub2ind([x,y,z],ij{:});
A = s(idx);
B = s(setdiff(1:numel(s),idx));
Weitere Antworten (2)
Guillaume
am 9 Jun. 2015
coordinates = [1 2 1
3 1 1
2 3 1];
s = [0.3 0.4 0.6
0.1 0.5 0.7
0.2 0.11 0.9];
linindices = sub2ind(size(s), coordinates(:, 1), coordinates(:, 2))';
A = s(linindices)
B = s(setdiff(1:numel(s), linindices))
Walter Roberson
am 9 Jun. 2015
dlmread() or load() the text file into a matrix, and then work with it in memory.
Siehe auch
Kategorien
Mehr zu Annotations finden Sie in Help Center und File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!