topic NaN sorting in Mathcad https://www.ptcusercommunity.com/t5/Mathcad/NaN-sorting/m-p/550583#M180782 <P>What's the purpose of a sorting algorithm, if it doesn't work!?<U> </U></P> <P>Prime 4:</P> <P><span class="lia-inline-image-display-wrapper" image-alt="LM_20180528_NaNsort.png" style="width: 918px;"><img src="https://www.ptcusercommunity.com/t5/image/serverpage/image-id/7691i6334852BA4B66F15/image-size/large?v=v2&amp;px=999" role="button" title="LM_20180528_NaNsort.png" alt="LM_20180528_NaNsort.png" /></span></P> <P>And this is what it could (should?) be:</P> <P>&nbsp;<IMG src="https://www.ptcusercommunity.com/t5/image/serverpage/image-id/7692i6DC167E30011DA2F/image-size/original?v=1.0&amp;px=-1" border="0" alt="LM_20180528_NaNsort1.png" title="LM_20180528_NaNsort1.png" /></P> <P>&nbsp;</P> <P>Luc</P> <P>&nbsp;</P> Mon, 28 May 2018 11:55:37 GMT LucMeekes 2018-05-28T11:55:37Z NaN sorting https://www.ptcusercommunity.com/t5/Mathcad/NaN-sorting/m-p/550583#M180782 <P>What's the purpose of a sorting algorithm, if it doesn't work!?<U> </U></P> <P>Prime 4:</P> <P><span class="lia-inline-image-display-wrapper" image-alt="LM_20180528_NaNsort.png" style="width: 918px;"><img src="https://www.ptcusercommunity.com/t5/image/serverpage/image-id/7691i6334852BA4B66F15/image-size/large?v=v2&amp;px=999" role="button" title="LM_20180528_NaNsort.png" alt="LM_20180528_NaNsort.png" /></span></P> <P>And this is what it could (should?) be:</P> <P>&nbsp;<IMG src="https://www.ptcusercommunity.com/t5/image/serverpage/image-id/7692i6DC167E30011DA2F/image-size/original?v=1.0&amp;px=-1" border="0" alt="LM_20180528_NaNsort1.png" title="LM_20180528_NaNsort1.png" /></P> <P>&nbsp;</P> <P>Luc</P> <P>&nbsp;</P> Mon, 28 May 2018 11:55:37 GMT https://www.ptcusercommunity.com/t5/Mathcad/NaN-sorting/m-p/550583#M180782 LucMeekes 2018-05-28T11:55:37Z Re: NaN sorting https://www.ptcusercommunity.com/t5/Mathcad/NaN-sorting/m-p/550586#M180783 <P>Thats really bad!</P> <P>In Mathcad 15 I see the very same as in Prime.</P> <P>NaN's sometimes throws "sort" completely off the track. ot sure when after MC11 that bug was introduced.</P> <P><IMG src="https://www.ptcusercommunity.com/t5/image/serverpage/image-id/7693iC0E23E9C67DC2FD7/image-size/original?v=1.0&amp;px=-1" border="0" alt="B.PNG" title="B.PNG" /></P> Mon, 28 May 2018 12:05:43 GMT https://www.ptcusercommunity.com/t5/Mathcad/NaN-sorting/m-p/550586#M180783 Werner_E 2018-05-28T12:05:43Z