Aliased per_column(C), spacing(I), nearest_multiple(T) for info

Also updated test_info.py to use long aliases instead of short ones, though the output of `info` are still strings that use short aliases.

pygmt/modules.py

@@ -52,6 +52,7 @@ def grdinfo(grid, **kwargs):
 
 
 @fmt_docstring
+@use_alias(C="per_column", I="spacing", T="nearest_multiple")
 def info(fname, **kwargs):
  """
  Get information about data tables.
@@ -62,23 +63,25 @@ def info(fname, **kwargs):
  n columns rounded up and down to the nearest multiple of the supplied
  increments. By default, this output will be in the form *-Rw/e/s/n*,
  or the output will be in column form for as many columns as there are
- increments provided. The *T* option will provide a *-Tzmin/zmax/dz* string
- for makecpt.
+ increments provided. The *nearest_multiple* option will provide a
+ *-Tzmin/zmax/dz* string for makecpt.
 
  Full option list at :gmt-docs:`gmtinfo.html`
 
+ {aliases}
+
  Parameters
  ----------
  fname : str
  The file name of the input data table file.
- C : bool
+ per_column : bool
  Report the min/max values per column in separate columns.
- I : str
+ spacing : str
  ``'[b|p|f|s]dx[/dy[/dz...]]'``.
  Report the min/max of the first n columns to the nearest multiple of
  the provided increments and output results in the form *-Rw/e/s/n*
- (unless *C* is set).
- T : str
+ (unless *per_column* is set).
+ nearest_multiple : str
  ``'dz[+ccol]'``
  Report the min/max of the first (0'th) column to the nearest multiple
  of dz and output this as the string *-Tzmin/zmax/dz*.

pygmt/tests/test_info.py

@@ -17,32 +17,35 @@ def test_info():
  "Make sure info works"
  output = info(fname=POINTS_DATA)
  expected_output = (
- "{}: N = 20 " "<11.5309/61.7074> " "<-2.9289/7.8648> " "<0.1412/0.9338>\n"
- ).format(POINTS_DATA)
+ f"{POINTS_DATA}: N = 20 "
+ "<11.5309/61.7074> "
+ "<-2.9289/7.8648> "
+ "<0.1412/0.9338>\n"
+ )
  assert output == expected_output
 
 
-def test_info_c():
- "Make sure the C option works"
- output = info(fname=POINTS_DATA, C=True)
+def test_info_per_column():
+ "Make sure the per_column option works"
+ output = info(fname=POINTS_DATA, per_column=True)
  assert output == "11.5309 61.7074 -2.9289 7.8648 0.1412 0.9338\n"
 
 
-def test_info_i():
- "Make sure the I option works"
- output = info(fname=POINTS_DATA, I=0.1)
+def test_info_spacing():
+ "Make sure the spacing option works"
+ output = info(fname=POINTS_DATA, spacing=0.1)
  assert output == "-R11.5/61.8/-3/7.9\n"
 
 
-def test_info_c_i():
- "Make sure the C and I options work together"
- output = info(fname=POINTS_DATA, C=True, I=0.1)
+def test_info_per_column_spacing():
+ "Make sure the per_column and spacing options work together"
+ output = info(fname=POINTS_DATA, per_column=True, spacing=0.1)
  assert output == "11.5 61.8 -3 7.9 0.1412 0.9338\n"
 
 
-def test_info_t():
- "Make sure the T option works"
- output = info(fname=POINTS_DATA, T=0.1)
+def test_info_nearest_multiple():
+ "Make sure the nearest_multiple option works"
+ output = info(fname=POINTS_DATA, nearest_multiple=0.1)
  assert output == "-T11.5/61.8/0.1\n"