Using textscan() to get data from a TXT file, but all cells are NaN

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Now i'm using textscan() to get data from a txt file.
The data in txt file just like "1,2,3,4
[filename, pathname] = uigetfile( ...
{'*.txt'}, ...
'Pick a file');
fid = fopen([pathname filename],'r');
V = textscan(fid,'%0.f %0.f %0.f %0.f','Delimiter',',')
I want to get a data array V
but there are something wrong, the cells are [NaN]
I dont konw why.
Please tell me how to debug
v =
1*7 cell array
{[NaN]} {[NaN]} {[NaN]} {[NaN]}

Accepted Answer

Chunru on 16 Nov 2021
Your format specifier is not correct.
s = 2×1 string array
"1,2,3,4" "2,4,5,7"
V = textscan(s(1),'%f %f %f %f','Delimiter',',')
V = 1×4 cell array
{[1]} {[2]} {[3]} {[4]}
V = textscan(s(1),'%0.f %0.f %0.f %0.f','Delimiter',',')
V = 1×4 cell array
{[NaN]} {[NaN]} {[NaN]} {[NaN]}

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