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clib: Fix the bug when passing multiple columns of strings with variable lengths to the GMT C API #2719

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Merged
merged 3 commits into from
Oct 9, 2023
Merged

clib: Fix the bug when passing multiple columns of strings with variable lengths to the GMT C API #2719

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f83f21d
Fix the bug when concatenating strings arrays with spaces
seisman Oct 7, 2023
b5567ce
Merge branch 'main' into put-string
seisman Oct 9, 2023
80e500c
Improve the existing test to catch the bug
seisman Oct 9, 2023
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4 changes: 1 addition & 3 deletions pygmt/clib/session.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1291,9 +1291,7 @@ def virtualfile_from_vectors(self, *vectors):
if len(string_arrays) == 1:
strings = string_arrays[0]
elif len(string_arrays) > 1:
strings = np.apply_along_axis(
func1d=" ".join, axis=0, arr=string_arrays
)
strings = np.array([" ".join(vals) for vals in zip(*string_arrays)])
strings = np.asanyarray(a=strings, dtype=str)
self.put_strings(
dataset, family="GMT_IS_VECTOR|GMT_IS_DUPLICATE", strings=strings
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3 changes: 2 additions & 1 deletion pygmt/tests/test_clib.py
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Expand Up @@ -556,7 +556,8 @@ def test_virtualfile_from_vectors_two_string_or_object_columns(dtype):
size = 5
x = np.arange(size, dtype=np.int32)
y = np.arange(size, size * 2, 1, dtype=np.int32)
strings1 = np.array(["a", "bc", "def", "ghij", "klmno"], dtype=dtype)
# Catch bug in https://github.com/GenericMappingTools/pygmt/pull/2719
strings1 = np.array(["a", "bc", "def", "ghij", "klmnolooong"], dtype=dtype)
strings2 = np.array(["pqrst", "uvwx", "yz!", "@#", "$"], dtype=dtype)
with clib.Session() as lib:
with lib.virtualfile_from_vectors(x, y, strings1, strings2) as vfile:
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