topic Re: Missing values after PCA in Discussions https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898979#M105887 <P>If you wish to keep those rows for PCA, I think you will have to use imputation.</P> Sat, 06 Sep 2025 13:07:27 GMT jthi 2025-09-06T13:07:27Z Missing values after PCA https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898894#M105878 <P>What are the missing values (black dots) after you perform a PCA?</P> <P><span class="lia-inline-image-display-wrapper lia-image-align-inline" image-alt="Beginner_9_0-1757081710145.png" style="width: 400px;"><img src="https://community.jmp.com/t5/image/serverpage/image-id/81946iA0874AB0ABB0FC7C/image-size/medium?v=v2&amp;px=400" role="button" title="Beginner_9_0-1757081710145.png" alt="Beginner_9_0-1757081710145.png" /></span></P> <P>&nbsp;</P> Fri, 05 Sep 2025 14:16:01 GMT https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898894#M105878 Beginner_9 2025-09-05T14:16:01Z Re: Missing values after PCA https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898905#M105880 <P>Does your data possibly have missing values? This could cause the Prin formulas to end up resulting in missing values as well.</P> <P>&nbsp;</P> <P><LI-MESSAGE title="Regarding Summary Plots and Missing Values in Principal Components Analysis" uid="898193" url="https://community.jmp.com/t5/Discussions/Regarding-Summary-Plots-and-Missing-Values-in-Principal/m-p/898193#U898193" discussion_style_icon_css="lia-mention-container-editor-message lia-img-icon-forum-thread lia-fa-icon lia-fa-forum lia-fa-thread lia-fa"></LI-MESSAGE>&nbsp;</P> Fri, 05 Sep 2025 14:23:24 GMT https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898905#M105880 jthi 2025-09-05T14:23:24Z Re: Missing values after PCA https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898906#M105881 <P>Yes, my data has some missing values which I want to exclude. I don't think there's any other way than imputing the data.</P> Fri, 05 Sep 2025 14:25:21 GMT https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898906#M105881 Beginner_9 2025-09-05T14:25:21Z Re: Missing values after PCA https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898979#M105887 <P>If you wish to keep those rows for PCA, I think you will have to use imputation.</P> Sat, 06 Sep 2025 13:07:27 GMT https://community.jmp.com/t5/Discussions/Missing-values-after-PCA/m-p/898979#M105887 jthi 2025-09-06T13:07:27Z