How to define an empty table with variable type of a column as a matrix?

26 次查看（过去 30 天）

显示更早的评论

Parth-Raj Singh 2020-7-17

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/566634-how-to-define-an-empty-table-with-variable-type-of-a-column-as-a-matrix

评论： Star Strider 2020-7-20

采纳的回答： Star Strider

在 MATLAB Online 中打开

Hello everyone,

I want to create an empty table with variable type of a column as a matrix.

I tried

tab = table('Size',[10,2],'VariableTypes',["double","double"]);
tab{1,1} = zeros(1,50); % I want to do this
tab{1,2} = zeros(1,25); % I want to do this
% Error : The value on the right-hand side of the assignment has the wrong width. The assignment requires a value whose width is 1. 

I understant this error however, I would like to know how can it be solved.

Thanks

2 个评论
显示无隐藏无

Fangjun Jiang 2020-7-17

You specified the table size as [10,2]. tab{1,1} and tab{1,2} is already a scalar whose value is 0.

You can't assign it to be a vector of 50 zeros or 25 zeros.

Parth-Raj Singh 2020-7-20

As I already mentioned, I understand the problem.

Thanks anyway.

请先登录，再进行评论。

请先登录，再回答此问题。

采纳的回答

Star Strider 2020-7-17

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/566634-how-to-define-an-empty-table-with-variable-type-of-a-column-as-a-matrix#answer_467157

在 MATLAB Online 中打开

I doubt that has a solution, with the way you created ‘tab’ originally, since it exceeds the column size you set for it.

You can do something like this, however that is a good as it gets:

tab = table('Size',[50,2],'VariableTypes',["double","double"]);
tab{1:50,1} = rand(50,1);
tab{1:25,2} = rand(25,1);

6 个评论
显示 4更早的评论隐藏 4更早的评论

Parth-Raj Singh 2020-7-20

Yes, this seems to be the only option I have left based on my requirements. Thanks a lot.

Star Strider 2020-7-20

As always, my pleasure!

请先登录，再进行评论。

类别

MATLAB Language Fundamentals Data Types Numeric Types Logical

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

产品

MATLAB

版本

R2020a

Community Treasure Hunt

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

Start Hunting!

Translated by