# New API reference

This page provides an auto-generated summary of h5netcdf’s new API.

`File`(path[, mode, invalid_netcdf, phony_dims]) |
`File.create_group`(name) | Create NetCDF4 group.
`File.create_variable`(name[, dimensions, ...]) | Creates a new variable.
`File.resize_dimension`(dim, size) | Resize a dimension to a certain size.
`Group`(parent, name) |
`Dimension`(parent, name[, size, create_h5ds, ...]) |
`Variable`(parent, name[, dimensions]) |