Matlab小问题合辑【长期稳定更新】
Q:
Suppose I have the following string:
s = 'Foo 1.000 3.000 3.554'
I would like to read it with the textscan function as follows.
[name x y z] = textscan(s, '%s %f %f %f')
However, when I do this, I always get the Too many output arguments error.
I think it has to do with the fact that textscan outputs a cell array, but I could not discover how to work around this problem and the desired effect.
A:
You'll need two lines to do what you want. First you get the desired valued into a dummy variable, then distribute the data with deal:
dummy = textscan(s, '%s %f %f %f');
[a,b,c,d] = deal(dummy {:});
Note: After Matlab 7.0, deal() is not neccesary.
Q:
i have a file called hello.txt using wordpad which contains the matrix
2 7 3
2 6 9
now i have a vector v = [1 2 3] and i want to add this vector to the hello.txt file so when i open the hello.txt file i should have
2 7 3
2 6 9
1 2 3
how can i do this?
A:
fid = fopen('hello.txt', 'at'); fprintf(fid, '%d %d %d\n', v); fclose(fid);