Error ~= Invalid types for comparison

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Luca 2021-4-17

评论： Luca 2021-4-17

Hi,

I tried to run this code:

D2sub1.RETsm(D2sub1.ID ~= lagmatrix(D2sub1.ID, 1)) = NaN;

and get the error

Error using ~= (line 30)

Invalid types for comparison.

ID is a categorical column.

Is it not possible to compare categorical variables like this?

Thanks,

Jan 2021-4-17

You mention, that ID is a categrical variable, but what is "lagmatrix"? Please post a small example of your inputs.

Luca 2021-4-17

So it looks like this

ID lagmatrix(ID,1)

10000 NaN

10000 1

10001 1

10001 2

The lagmatrix command moves the original Matrix down by 1 row. So the switch happens one row later.

There where it is not equal I want that the retrurns are NaN.

I realised that it creates you a variable of type double.

I guess this is the problem.

Thank you very much for your help.

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