Comments on: Seriation in R: How to Optimally Order Objects in a Data Matrice https://www.datanovia.com/en/blog/seriation-in-r-how-to-optimally-order-objects-in-a-data-matrice/ Data Mining and Statistics for Decision Support Thu, 13 Jun 2024 09:50:44 +0000 hourly 1 https://wordpress.org/?v=6.8.2 By: pierre https://www.datanovia.com/en/blog/seriation-in-r-how-to-optimally-order-objects-in-a-data-matrice/#comment-29184 Thu, 13 Jun 2024 09:50:44 +0000 https://www.datanovia.com/en/?p=15802#comment-29184 Hie
Thanks a lot for yours exlanations, VERY usefull.
Do you know statisticals test post hoc to idendify which variables are spécifics to one or more class?
thanks a lot

]]> By: Tim https://www.datanovia.com/en/blog/seriation-in-r-how-to-optimally-order-objects-in-a-data-matrice/#comment-19791 Thu, 07 May 2020 09:43:15 +0000 https://www.datanovia.com/en/?p=15802#comment-19791 In reply to kassambara.

Perfect! Thank you for the quick reply.

]]> By: kassambara https://www.datanovia.com/en/blog/seriation-in-r-how-to-optimally-order-objects-in-a-data-matrice/#comment-19787 Wed, 06 May 2020 12:26:19 +0000 https://www.datanovia.com/en/?p=15802#comment-19787 In reply to Tim.

Seriate rows only. When creating the image, you need to specify the columns order even if you seriate only the rows; so, consider using NA for column orders:

library(seriation)
data("Townships")

# Seriate rows only using margin = 1
set.seed(1234)
row_orders <- seriate(
  Townships, method = "BEA", control = list(rep = 10),
  margin = 1
  )

# Visualize
# You need to specify both rows and columns order
# Use NA for column orders
bertinplot(
  Townships, order = c(row_orders, NA),
  options = list(panel = panel.circles)
)

plot of chunk seriate-rows-only

]]> By: Tim https://www.datanovia.com/en/blog/seriation-in-r-how-to-optimally-order-objects-in-a-data-matrice/#comment-19785 Wed, 06 May 2020 10:56:03 +0000 https://www.datanovia.com/en/?p=15802#comment-19785 In your “Township”example you: #Seriate rows and columns using the bond energy algorithm (BEA)
I wanted to know if it is possible to only seriate the rows and fix the columns. I tried with the “margin” but I then get a error for plotting.

Thanks for your help and your amazing package (sounds dirty 😉

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