Clarify resolutions of Earth relief grids requiring the region parameter

[core-man]

Description of the problem

See load_earth_relief:

region (str or list) – The subregion of the grid to load, in the forms of a list [xmin, xmax, ymin, ymax] or a string xmin/xmax/ymin/ymax. Required for Earth relief grids with resolutions higher than 5 arc-minute (i.e., 05m).

pygmt/pygmt/datasets/earth_relief.py

Lines 94 to 95 in d90b3fc

	# earth relief data stored as tiles for high resolutions
	tiled_resolutions = ["05m", "04m", "03m", "02m", "01m", "30s", "15s", "03s", "01s"]

So, Higher than 5 arc-minute means "04m", "03m", "02m", "01m", "30s", "15s", "03s", adn "01s"? But "05m" is actually high resolution relief data.

[willschlitzer]

Couldn't this just be rewritten to "with resolutions of 5 arc-minutes or higher"?

[core-man]

Couldn't this just be rewritten to "with resolutions of 5 arc-minutes or higher"?

I think so.

[willschlitzer]

@core-man I tagged this as a good first issue; I think documentation fixes are a good introduction to open source contributing.

[core-man]

@core-man I tagged this as a good first issue; I think documentation fixes are a good introduction to open source contributing.

Great.Thanks a lot.

[weiji14]

@srijac will be working on this today!