mxArray to double?

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Ho Jung Kim
Ho Jung Kim 2022-7-28
评论： Abderrahim. B 2022-8-1
I am using simevents and using importdata to bring variable from .mat file to simevents. I want to use this variable in if statement and possibly change the value as well. However, I am getting this error:
Expected either a logical, char, int, fi, single, or double. Found an mxArray. MxArrays are returned from calls to the MATLAB interpreter and are not supported inside expressions. They may only be used on the right-hand side of assignments and as arguments to extrinsic functions.
Is there a way to fix this? mxArray to double? I have an example below
choice.mat has one variable.
I have tried declaring the variable count as doule and called importdata, but I'm still getting the same error.
  2 个评论
James Tursa
James Tursa 2022-7-28
Please show us the relavant code.
Ho Jung Kim
Ho Jung Kim 2022-7-28
I added an example. Thank you.

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回答（1 个）

Abderrahim. B
Abderrahim. B 2022-7-29
Hi!
I' m not sure how did define variable count as double!
Try to preinitialize the variable count before calling the function.
count = zeros(size(count))
If you don't know the size of your variable then use zeros .
Hope this helps
  2 个评论
Ho Jung Kim
Ho Jung Kim 2022-8-1
Thank you so much! This works!!!
Abderrahim. B
Abderrahim. B 2022-8-1
Glad it worked.
- If you found my answer helpful and want others with same issue to refer to it, accept it!

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