In xxx_cpp.zip, where does EI_CLASSIFIER_RAW_SAMPLE_COUNT come from

Question/Issue:
In the xxx_cpp.zip file created via ei.model.deploy(), in the file model-parameters/model_metadata.h, where do the following values come from:

#define EI_CLASSIFIER_NN_INPUT_FRAME_SIZE 784
#define EI_CLASSIFIER_RAW_SAMPLE_COUNT 784

And does this mean that in source/main.cpp (from example-standalone-interfacing) I would need a 784 entry value for Raw Features inserted into the following function in main.cpp:

// Raw features copied from test sample
static const float features[] = {
// Copy raw features here (e.g. from the ‘Model testing’ page)
};

Project ID:
BYOM

Context/Use case:
My dataset came from mnist.npz.

Hello @mjenkel,

It corresponds to the input size of the neural network.

Best,

Louis