logdir should default to .

My personal workflow:

1. Open the folder with the tensorboard files in it
2. Open a command window from this folder (this folder as root)
3. type in tensorboard --logdir . manually
4. switch to the browser

It seems so minor but you won't believe how tiring it is to type --logdir . every time.

For me it would be a huge quality of life improvement to make logdir default to the current folder (.).

While this is my personal workflow and for sure there are many other workflows I don't see any reason why defaulting to the current folder would interfere with any other workflow.

Feature request: logdir should default to current folder (.) if not specified

The only change needed seems to be in tensorboard.tensorboard.plugins.core.core_plugin:

From

 def fix_flags(self, flags):
    """Fixes standard TensorBoard CLI flags to parser."""
    if not flags.db and not flags.logdir:
        raise ValueError('A logdir or db must be specified. '
                    'For example `tensorboard --logdir mylogdir` '
                    'or `tensorboard --db sqlite:~/.tensorboard.db`. '
                    'Run `tensorboard --helpfull` for details and examples.')
    flags.logdir = os.path.expanduser(flags.logdir)

to something like

 def fix_flags(self, flags):
    """Fixes standard TensorBoard CLI flags to parser."""
    flags.logdir = os.path.expanduser('.' if not flags.db and not flags.logdir else flags.logdir)

not sure if something special about flags.db needs to be done.

Start in tensorboard.tensorboard.plugins.core.core_plugin.fix_flags and inspect how flags.db and flags.logdir are handled. Verify that an omitted logdir uses the current folder while database-backed startup remains valid; done when the CLI no longer requires --logdir for the stated workflow.