Open to see the scree diagram and interactively select the number of components. Choose two best principal components and check if the classes from the input dataset are well separated. The File widget loads brown-selected, a dataset from molecular biology with 79 features, 186 instances and 3 classes. gAN9cQAoWAMAAAB1cmxxAVgAAAAAcQJYDAAAAHJlY2VudF9wYXRoc3EDXXEEKGNPcmFuZ2Uud2lk Z2V0cy51dGlscy5maWxlZGlhbG9ncwpSZWNlbnRQYXRoCnEFKYFxBn1xByhYBQAAAHNoZWV0cQho AlgFAAAAdGl0bGVxCWgCWAcAAAByZWxwYXRocQpYEgAAAGJyb3duLXNlbGVjdGVkLnRhYnELWAcA AABhYnNwYXRocQxYQgAAAC9Vc2Vycy9ibGF6L0Ryb3Bib3gvZGV2L29yYW5nZTMvT3JhbmdlL2Rh dGFzZXRzL2Jyb3duLXNlbGVjdGVkLnRhYnENWAYAAABwcmVmaXhxDlgPAAAAc2FtcGxlLWRhdGFz ZXRzcQ91YmgFKYFxEH1xEShoCGgCaAloAmgKWAgAAABpcmlzLnRhYnESaAxYOAAAAC9Vc2Vycy9i bGF6L0Ryb3Bib3gvZGV2L29yYW5nZTMvT3JhbmdlL2RhdGFzZXRzL2lyaXMudGFicRNoDmgPdWJl WAYAAABzb3VyY2VxFEsAWAsAAABzaGVldF9uYW1lc3EVfXEWWAsAAAByZWNlbnRfdXJsc3EXXXEY WBMAAABzYXZlZFdpZGdldEdlb21ldHJ5cRlDLgHZ0MsAAQAAAAAD/wAAAlwAAAXwAAAEQwAAA/8A AAJyAAAF8AAABEMAAAAAAABxGlgQAAAAY29udGV4dF9zZXR0aW5nc3EbXXEcdS4= gAN9cQAoWAcAAABhZGRyZXNzcQFYAAAAAHECWAsAAABuY29tcG9uZW50c3EDSwJYBAAAAG1heHBx BEsUWBAAAAB2YXJpYW5jZV9jb3ZlcmVkcQVjbnVtcHkuY29yZS5tdWx0aWFycmF5CnNjYWxhcgpx BmNudW1weQpkdHlwZQpxB1gCAAAAZjhxCEsASwGHcQlScQooSwNYAQAAADxxC05OTkr/////Sv// //9LAHRxDGJDCHmb0rxOmEFAcQ2GcQ5ScQ9YCwAAAGF4aXNfbGFiZWxzcRBLClgLAAAAYXV0b191 cGRhdGVxEYhYCQAAAG5vcm1hbGl6ZXESiFgKAAAAYmF0Y2hfc2l6ZXETS2RYEwAAAHNhdmVkV2lk Z2V0R2VvbWV0cnlxFE5YCwAAAGF1dG9fY29tbWl0cRWIdS4= gAN9cQAoWAsAAABhdXRvX3NhbXBsZXEBiFgRAAAAdG9vbGJhcl9zZWxlY3Rpb25xAksAWAUAAABn cmFwaHEDfXEEKFgNAAAAY2xhc3NfZGVuc2l0eXEFiFgLAAAAc2hvd19sZWdlbmRxBohYEQAAAHRv b2x0aXBfc2hvd3NfYWxscQeJWBEAAABqaXR0ZXJfY29udGludW91c3EIiFgLAAAAYWxwaGFfdmFs dWVxCUuAWAsAAABqaXR0ZXJfc2l6ZXEKSwFYCwAAAHBvaW50X3dpZHRocQtLClgTAAAAbGFiZWxf b25seV9zZWxlY3RlZHEMiVgJAAAAc2hvd19ncmlkcQ2JdVgTAAAAYXV0b19zZW5kX3NlbGVjdGlv bnEOiFgTAAAAc2F2ZWRXaWRnZXRHZW9tZXRyeXEPQy4B2dDLAAEAAAAABKgAAADjAAAH3QAAA7IA AASoAAAA+QAAB90AAAOyAAAAAAAAcRBYEAAAAGNvbnRleHRfc2V0dGluZ3NxEV1xEmNPcmFuZ2Uu d2lkZ2V0cy5zZXR0aW5ncwpDb250ZXh0CnETKYFxFH1xFShYBQAAAG1ldGFzcRZ9cRdYBAAAAHRp bWVxGEdB1eCcEvjll1gKAAAAYXR0cmlidXRlc3EZfXEaKFgIAAAAZnVuY3Rpb25xG0sBWAMAAABQ QzFxHEsCWAMAAABQQzJxHUsCdVgOAAAAb3JkZXJlZF9kb21haW5xHl1xHyhoHEsChnEgaB1LAoZx IWgbSwGGcSJlWAYAAAB2YWx1ZXNxI31xJChoAYhK/v///4ZxJVgGAAAAYXR0cl94cSZYAwAAAFBD MXEnSwKGcShoAksASv7///+GcSloDohK/v///4ZxKmgDfXErKGgJS4BK/v///4ZxLFgKAAAAYXR0 cl9jb2xvcnEtaBtLAYZxLmgHiUr+////hnEvWAoAAABhdHRyX3NoYXBlcTBYAAAAAHExSv7///+G cTJoBohK/v///4ZxM2gKSwFK/v///4ZxNGgMiUr+////hnE1aA2JSv7///+GcTZYCgAAAGF0dHJf bGFiZWxxN2gxSv7///+GcThYCQAAAGF0dHJfc2l6ZXE5aDFK/v///4ZxOmgIiEr+////hnE7aAtL Ckr+////hnE8aAWISv7///+GcT11aA9oEEr+////hnE+WAYAAABhdHRyX3lxP1gDAAAAUEMycUBL AoZxQXV1YmF1Lg== gAN9cQAoWA4AAABkaXN0X2NvbG9yX1JHQnEBKEvcS9xL3Ev/dHECWAsAAABzZWxlY3Rfcm93c3ED iFgLAAAAYXV0b19jb21taXRxBIhYDgAAAGNvbG9yX2J5X2NsYXNzcQWIWBMAAABzYXZlZFdpZGdl dEdlb21ldHJ5cQZDLgHZ0MsAAQAAAAADaAAAAbkAAAaHAAADwgAAA2gAAAHPAAAGhwAAA8IAAAAA AABxB1gVAAAAc2hvd19hdHRyaWJ1dGVfbGFiZWxzcQiIWBIAAABzaG93X2Rpc3RyaWJ1dGlvbnNx CYlYEAAAAGNvbnRleHRfc2V0dGluZ3NxCl1xC2NPcmFuZ2Uud2lkZ2V0cy5zZXR0aW5ncwpDb250 ZXh0CnEMKYFxDX1xDihYBQAAAG1ldGFzcQ99cRBYBAAAAHRpbWVxEUdB1eCcFDIJHFgKAAAAYXR0 cmlidXRlc3ESfXETKFgIAAAAZnVuY3Rpb25xFF1xFShYBwAAAFByb3RlYXNxFlgEAAAAUmVzcHEX WAQAAABSaWJvcRhlWAMAAABQQzFxGUsCWAMAAABQQzJxGksCdVgOAAAAb3JkZXJlZF9kb21haW5x G11xHChoGUsChnEdaBpLAoZxHmgUSwGGcR9lWAYAAAB2YWx1ZXNxIH1xIShoAWgCSv7///+GcSJo A4hK/v///4ZxI1gNAAAAc2VsZWN0ZWRfY29sc3EkXXElaASISv7///+GcSZoBYhK/v///4ZxJ2gG aAdK/v///4ZxKGgIiEr+////hnEpWA0AAABzZWxlY3RlZF9yb3dzcSpdcStoCYlK/v///4ZxLHV1 YmF1Lg==