Add missing rows to a list in a cell array

Question

Raúl García Odriozola 2023-6-29

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1989923-add-missing-rows-to-a-list-in-a-cell-array

评论： Raúl García Odriozola 2023-6-29

采纳的回答： cdawg

I have a cell array with values like this

...

9 [10370;10371;10372]

10 [12933;12934]

11 10001

12 11320

13 [11347;11348]

14 [10362;10363]

17 [12632;12633]

...

And i want to add blank rows for all the missing numbers in the first collumn so it would look like this

...

9 [10370;10371;10372]

10 [12933;12934]

11 10001

12 11320

13 [11347;11348]

14 [10362;10363]

15

16

17 [12632;12633]

...

I have a list of how many items should appear on the first row but i'm having problems finding a way without using a for loop, the list is too big for that.

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Answer 1

cdawg 2023-6-29

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1989923-add-missing-rows-to-a-list-in-a-cell-array#answer_1264943

在 MATLAB Online 中打开

Will this work?

m = {...
9	[10370;10371;10372]
10	[12933;12934]
11	10001
12	11320
13	[11347;11348]
14	[10362;10363]
17	[12632;12633]};
inds = cell2mat(m(:,1));
lastRow = 20;
M = cell(lastRow,2);
M(inds,2) = m(:,2);
M(inds,1) = m(:,1)
M = 20×2 cell array
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}
    {[       9]}    {3×1 double}
    {[      10]}    {2×1 double}
    {[      11]}    {[   10001]}
    {[      12]}    {[   11320]}
    {[      13]}    {2×1 double}
    {[      14]}    {2×1 double}
    {0×0 double}    {0×0 double}
    {0×0 double}    {0×0 double}