Error using interp1 with cell data

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Jorge Bastillo
Jorge Bastillo 2015-4-29
评论： Jorge Bastillo 2015-4-29
I have a .txt file with two columns of data. I run the following to open it and assign x and y:
%Open file and extract x and y data
fid=fopen(fileput,'r');
data=textscan(fid,'%d %d','headerlines',1);
x=data{1};
y=data{2};
fclose(fid);
My problem is when I attempt to use interp1 to find a value...
>> interp1(x,y,100)
Error using interp1 (line 130)
Values must be of type double or single.
I'm assuming it's got something to do with how I've assigned x and y, I've tried cell2mat(x) and got this error:
>> cell2mat(x)
Cell contents reference from a non-cell array object.
Error in cell2mat (line 42)
cellclass = class(c{1});

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Image Analyst
Image Analyst 2015-4-29
What is data? Is it a cell array instead of an N by 2 array of doubles? If that's the case, you might try
x = data{:, 1}; % Extract contents of column 1
y = data{:, 2}; % Extract contents of column 2
If that doesn't work, show us what this displays in the command window:
whos data
whos x
whos y
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Jorge Bastillo
Jorge Bastillo 2015-4-29
WOW... changing it to %f worked.
Thanks guys!

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