# \#itkwheels

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## [itk.ApproximateSignedDistanceMapImageFilter error](https://discourse.itk.org/t/itk-approximatesigneddistancemapimagefilter-error/361)

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**Author:** [@mafuentes](https://discourse.itk.org/u/mafuentes)\
**Replies:** 3\
**Last updated:** [October 27, 2017, 4:29pm UTC](https://discourse.itk.org/t/itk-approximatesigneddistancemapimagefilter-error/361 "2017-10-27T16:29:15Z")

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I am using the ITK python wheels and was doing a survey of the DistanceMap filters. While trying the ApproximateSignedDistanceMapImageFilter I got an error. Sample code and error below, can anyone give me a hint as to wh…