Sort factor using an other factor

Question

I use this tutorial tu plot a heatmap using ggplot2

http://learnr.wordpress.com/2010/01/26/ggplot2-quick-heatmap-plotting/

now I'd like to order the vertical factor using onother factor with the same length.

strains x1 x2 x3 origin
name     4 2  4   see

Does someone have any idea how does it work?

Thanks

For the nba dataset? Do you mean you want to sort the dataset by two factors? — David Arenburg, Apr 07 '14 at 10:23
I'd like to order the names for example on country names of the players. I have a similar data set with microorganisms and their origin and I want to sort the name on origin in the plot. — alexmulo, Apr 07 '14 at 10:37

score 0 · Answer 1 · answered Apr 07 '14 at 10:44

0

If you have an extra column in nba, for instance nba$country, then you can adjust the ordering in the original by

nba$Name <- with(nba, reorder(Name, country))

If you have an alternative annotation that you want to order by, then you'll need to match that in. For instance if you have a player-country data.frame (PC), then

nba$Name <- reorder(nba$Name, PC$country[match(nba$Name, PC$Name)])

answered Apr 07 '14 at 10:44

Gavin Kelly

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How can I do this after the ddply function? – alexmulo Apr 07 '14 at 10:51
`nba.$Name <- reorder(nba.m$Name, nb$country[match(nba.m$Name, nb$Name)])` might do it, depending on where you've got _country_ defined – Gavin Kelly Apr 07 '14 at 10:58

Sort factor using an other factor

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