Hey guys,
currently i am using QTextStream to read a text file and plot it.
The problem is that the file is about 30Mb and has more than 2 600 000 values to be ploted. And fill in the vector (the one required by the function setData()) takes about 1 minute. Is there anyway to speed up the reading?or maybe use directly the data from file by bypassing the vector ? If i fill in a test vector with 3 million values and plot it,it's almost instantanious but if i read those values from the text file and then plot it,it takes time... Any advise please?