请教IQ数据读取

blackbutter

各位，请教下我如何把下面复数的 实部 以及 虚部读出来。文件格式是 TXT的。关键是有括号。

(-0.000180407462116275,0.000492159127137877)       
(-0.00122151685652765,0.001184197905281)       
(-0.00300778084028639,0.000903791220769367)       
(-0.00413201265514443,4.01334237745417e-05)       
(-0.00341703423069789,0.000817812813551274)       
(-0.00166158559396808,0.00521171628514296)       
(-0.00112808034984909,0.0124133642164781)       
(-0.00282970020552435,0.0185826672202836)       
(-0.00468711630355861,0.0196213904802638)       

xiezhh

一行一行的读取，用strfind函数定位括号，用sscanf函数读取数据，自己研究一下吧。

blackbutter

谢谢，已经解决了，可以正则表达式或者其他处理方法。

fid=fopen('waveform.txt');
data_iq=fscanf(fid,'%s');
index1 = findstr(data_iq,'(');
index2 = findstr(data_iq,',');
index3 = findstr(data_iq,')');
data_real = zeros(length(index1),1);
data_imag = zeros(length(index1),1);
IQ_data=zeros(length(index1),1);
format long e                  
for i = 1:length(index1)
data_real(i,1) = str2num(data_iq(index1(i)+1:index2(i)-1));
data_imag(i,1) = str2num(data_iq(index2(i)+1:index3(i)-1));
IQ_data(i)=data_real(i,1) +j.*data_imag(i,1);
end

xiezhh

blackbutter 发表于 2012-3-31 12:23
谢谢，已经解决了，可以正则表达式或者其他处理方法。

fid=fopen('waveform.txt');

未来版本中会移除findstr函数，用strfind函数替代。
Note：   findstr will be removed in a future release. Use strfind instead.