Comparisons between string and double are not supported.

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주영 이 2021-12-4

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1602790-comparisons-between-string-and-double-are-not-supported

评论： 주영 이 2021-12-6

采纳的回答： Abolfazl Chaman Motlagh

error: nnet.cnn.TrainingOptionsADAM

The value of 'ValidationData' is not valid. The datastore has an invalid transform function defined.

cause: Comparisons between string and double are not supported.

What should I change to fix this error?

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Walter Roberson 2021-12-4

编辑：Walter Roberson 2021-12-4

Please show us the code for preprocessData()

Also, please show us the value of nettotrain at the time that the assignment to preprocessdValidationData is made.

주영 이 2021-12-5

COVID19_TrainMaskDetection.mlx

this is code

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采纳的回答

Abolfazl Chaman Motlagh 2021-12-5

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in your code nettotrain is eather "YOLOv2" or "SSD", but in training process and preprocessData function and some other lines you check if it is 1 or 2. (that's why you get Comparisons between string and double are not supported)

if nettotrain == 1 %line 101
...
if nettotrain == 1 %line 115
...
if nettotrain == 2 %line 151

for this issue use strcmp (or just change nettotrain to 1 or 2 before all this problems).

for example:

if strcmp(nettotrain,"YOLOv2")

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주영 이 2021-12-6

thank you!!!!!

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