About null values
5 次查看(过去 30 天)
显示 更早的评论
Hi,
I'm using importdata(file) function to extract the file information as a matrix. Until now there isn't any problem.
However, when I catch a file where there are a null values,the function only obtains the previous lines until the first line where there is a null values.
How can I configure this function for not omit the null values?
thanks
regards
3 个评论
Andrew Newell
2011-3-7
Importdata isn't bothered by zeros. It ignores blank lines and variable spacing between numbers, and can even handle missing data elements in a row (by appending NaN's to the end of the row). So what do you mean by null values?
采纳的回答
更多回答(1 个)
Matt Tearle
2011-3-7
It sounds like this is a delimited text file, in which case I'd recommend using textscan. It will use NaN in place of missing values. You can also specify the TreatAsNan option to tell it that certain patterns are missing values.
0 个评论
另请参阅
类别
在 Help Center 和 File Exchange 中查找有关 Large Files and Big Data 的更多信息
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!