Revert "Replace np.in1d by np.isin (#226)" (#227)

This reverts commit e4a1d10.

Author: mattijn

topojson/core/dedup.py

@@ -132,9 +132,9 @@ def _find_merged_linestring(self, data, no_ndp_arcs, ndp_arcs, ndp_arcs_bk):
         """
 
         for segment_idx in range(no_ndp_arcs):
-            # use isin function as proxy for contains
+            # use in1d function as proxy for contains
             merged_arcs_bool = [
-                np.isin(
+                np.in1d(
                     asvoid(data["linestrings"][i]),
                     asvoid(ndp_arcs.geoms[segment_idx].coords),
                 ).any()

topojson/ops.py

@@ -232,9 +232,9 @@ def insert_coords_in_line(line, tree_splitter):
     # select junctions having non existing vertices in linestring
     tol_float_prc = 1e8
     pts_xy_nonexst = pts_xy_on_line[
-        ~np.isin(
-            asvoid(np.around(pts_xy_on_line * tol_float_prc).astype(np.int64))[:,0],
-            asvoid(np.around(ls_xy * tol_float_prc).astype(np.int64))[:,0],
+        ~np.in1d(
+            asvoid(np.around(pts_xy_on_line * tol_float_prc).astype(np.int64)),
+            asvoid(np.around(ls_xy * tol_float_prc).astype(np.int64)),
         )
     ]
     if pts_xy_nonexst.size == 0:
@@ -298,9 +298,9 @@ def fast_split(line, splitter, is_ring):
     # locate index of splitter coordinates in linestring
     tol = 1e8
     splitter_indices = np.flatnonzero(
-        np.isin(
-            asvoid(np.around(line * tol).astype(np.int64))[:,0],
-            asvoid(np.around(splitter * tol).astype(np.int64))[:,0],
+        np.in1d(
+            asvoid(np.around(line * tol).astype(np.int64)),
+            asvoid(np.around(splitter * tol).astype(np.int64)),
         )
     )