r - Finding Multiple Elements in a Vector -

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मान लीजिए मेरे पास निम्न वेक्टर है: 

  & gt; X & lt; - नमूना (1: 10,20, प्रतिस्थापित = TRUE) & gt; X [1] 8 6 9 9 7 3 2 5 5 1 6 8 5 2 9 3 5 10 8 2

मैं कैसे पता लगा सकता हूँ कि कौन सा तत्व 8 या 9 हैं?

यह ऐसा करने का एक तरीका है। पहले मुझे सूचकांक मिलते हैं जिस पर एक्स या तो 8 या 9 होता है। फिर हम यह सत्यापित कर सकते हैं कि उन सूचकांकों में, एक्स वास्तव में 8 और 9 है। 

  & gt; इंड्स एंड एलटी; - जो (% c% 8 9) में & x; इंड्स [1] 1 3 4 12 15 19 & gt; X [इंडस] [1] 8 9 8 9 8

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