清空筛选条件
清空筛选条件

Create empty dataset and populate it row by row

8 次查看（过去 30 天）
Mark
Mark 2011-10-24
Hi,
I'm trying to create an object of the class dataset (Stats toolbox) with a few named "columns". I want such object to initially have no rows. Then, I would like to add new rows one by one. I've tried the code below to create the dataset but I get an error. Can anyone help me with this?
Thanks in advance
P.S. I could not submit this question to the "answers" section of the Mathworks website
% Column names are 'F1' and 'F2'
myDS = dataset([],'VarNames',{'F1','F2'})
??? Error using ==> setvarnames at 23
NEWNAMES must have one name for each variable in A.
Error in ==> dataset.dataset>dataset.dataset at 383
a = setvarnames(a,varnames); % names will be modified to make them valid

请先登录，再回答此问题。

采纳的回答

Mark
Mark 2011-10-24
Fangjun Jiang 23 minutes ago
VarNames={'F1','F2'}; myDS=dataset([],[],'VarNames',VarNames)

更多回答（1 个）

Fangjun Jiang
Fangjun Jiang 2011-10-24
myDS =dataset({[],'F1'},{[],'F2'});
Or to see it, myDS =dataset({1,'F1'},{2,'F2'})
  3 个评论
显示 1更早的评论
Fangjun Jiang
Fangjun Jiang 2011-10-24
VarNames={'F1','F2'};
myDS=dataset([],[],'VarNames',VarNames)

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Whos 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by