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Backport PR#26719: Fix issue with missing attribute in Path3DCollection

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Lines changed: 1 addition & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -808,6 +808,7 @@ def patch_collection_2d_to_3d(col, zs=0, zdir='z', depthshade=True):`
`808`	`808`	`"""`
`809`	`809`	`ifisinstance(col,PathCollection):`
`810`	`810`	`col.__class__=Path3DCollection`
	`811`	`+col._offset_zordered=None`
`811`	`812`	`elifisinstance(col,PatchCollection):`
`812`	`813`	`col.__class__=Patch3DCollection`
`813`	`814`	`col._depthshade=depthshade`

Lines changed: 18 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -1,6 +1,9 @@`
	`1`	`+importnumpyasnp`
	`2`	`+`
`1`	`3`	`importmatplotlib.pyplotasplt`
`2`	`4`
`3`	`5`	`frommatplotlib.backend_basesimportMouseEvent`
	`6`	`+frommpl_toolkits.mplot3d.art3dimportLine3DCollection`
`4`	`7`
`5`	`8`
`6`	`9`	`deftest_scatter_3d_projection_conservation():`
`@@ -36,3 +39,18 @@ def test_scatter_3d_projection_conservation():`
`36`	`39`	`assertcontainsisTrue`
`37`	`40`	`assertlen(ind["ind"])==1`
`38`	`41`	`assertind["ind"][0]==i`
	`42`	`+`
	`43`	`+`
	`44`	`+deftest_zordered_error():`
	`45`	`+# Smoke test for https://github.com/matplotlib/matplotlib/issues/26497`
	`46`	`+lc= [(np.fromiter([0.0,0.0,0.0],dtype="float"),`
	`47`	`+np.fromiter([1.0,1.0,1.0],dtype="float"))]`
	`48`	`+pc= [np.fromiter([0.0,0.0],dtype="float"),`
	`49`	`+np.fromiter([0.0,1.0],dtype="float"),`
	`50`	`+np.fromiter([1.0,1.0],dtype="float")]`
	`51`	`+`
	`52`	`+fig=plt.figure()`
	`53`	`+ax=fig.add_subplot(projection="3d")`
	`54`	`+ax.add_collection(Line3DCollection(lc))`
	`55`	`+ax.scatter(*pc,visible=False)`
	`56`	`+plt.draw()`

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