Top "Melt" questions

How to melt and cast dataframes using dplyr?

Recently I am doing all my data manipulations using dplyr and it is an excellent tool for that. However I …

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reshape2 melt warning message

I'm using melt and encounter the following warning message: attributes are not identical across measure variables; they will be dropped …

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Reshaping wide to long with multiple values columns

I need to reshape my wide table into long format but keeping multiple fields for each record, for example: dw &…

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R package reshape function melt error: id variables not found in data when working with a lot of factors

I am working with a rarefaction output from mothur, which basically gives me a dataset containing the number of sequences …

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Opposite of melt in python pandas

I cannot figure out how to do "reverse melt" using Pandas in python. This is my starting data import pandas …

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Pandas DataFrame stack multiple column values into single column

Assuming the following DataFrame: key.0 key.1 key.2 topic 1 abc def ghi 8 2 xab xcd xef 9 How can I combine the values …

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R cannot melt data.frame

I have the following data.frame, called tableMS: X Y Z T 1 375 855 455.7259 3777.856 2 395 969 347.8306 2506.7 3 449 811 309.9512 519.8513 4 451 774 278.291 717.8705 5 453 774 278.291 717.8705 6 455 774 278.291 717.8705 7 521 697 376.734 693.8541 8 529 855 455.7259 3777.856 9 531 855 455.7259 3777.856 10 609 774 278.291 717.8705 when I try to use the function melt() …

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How to melt Spark DataFrame?

Is there an equivalent of Pandas Melt Function in Apache Spark in PySpark or at least in Scala? I was …

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How to melt R data.frame and plot group by bar plot

I have following R data.frame: group match unmatch unmatch_active match_active 1 A 10 4 0 0 2 B 116 20 0 3 3 c 160 27 1 4 4 D 79 17 0 3 5 E 309 84 4 14 6 F 643 244 10 23 ... My …

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Simultaneously melt multiple columns in Python Pandas

wondering if pd.melt supports melting multiple columns. I have the below examples trying to have the value_vars as …

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