How to Merge Two Unequal Data Frames & Replace NA with 0 in R (Example) | merge & is.na Functions

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R code of this video:

x1 = 5:9,
x2 = 5:1)

y1 = 20:24,
y2 = 10:14)

data_all <- merge(data1, data2, # Merge data
by = "id",
all = TRUE)

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as usual, a very comprehensive R video from you. Thank you. Although, after I´ve created the data and click it on the environment, I am not obtaining the view as in your video. Why is that so?

danmatematica
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Could you please help me with an issue? I want to lookup cells in a data frame based on row and column. Then return these values to another data frame

ABEDSHADFAN