Adds a 1-sized dimension at index
k_expand_dims(x, axis = -1)
A tensor or variable.
Position where to add a new axis (axis indexes are 1-based). Pass -1 (the default) to select the last axis.
A tensor with expanded dimensions.
This function is part of a set of Keras backend functions that enable lower level access to the core operations of the backend tensor engine (e.g. TensorFlow, CNTK, Theano, etc.).
You can see a list of all available backend functions here: https://keras.rstudio.com/articles/backend.html#backend-functions.