From: Benjamin Auder <benjamin.auder@somewhere>
Date: Fri, 6 Jan 2017 03:04:11 +0000 (+0100)
Subject: work on draft R package
X-Git-Url: https://git.auder.net/variants/Cwda/vendor/doc/html/config.php?a=commitdiff_plain;h=3dcbfeef0dc92444287dd78a16c80e58a98a6ee7;p=epclust.git

work on draft R package
---

diff --git a/code/draft_R_pkg/R/main.R b/code/draft_R_pkg/R/main.R
index 4120b39..3411720 100644
--- a/code/draft_R_pkg/R/main.R
+++ b/code/draft_R_pkg/R/main.R
@@ -1,26 +1,39 @@
-epclust = function(data=NULL, con=NULL, raw=FALSE, K, nbPerChunk, ...)
+#TODO: setRefClass... to avoid copy data !!
+#http://stackoverflow.com/questions/2603184/r-pass-by-reference
+
+#fields: data (can be NULL or provided by user), coeffs (will be computed
+#con can be a character string naming a file; see readLines()
+#data can be in DB format, on one column : TODO: guess (from header, or col. length...)
+epclust = function(data=NULL, con=NULL, raw=FALSE, K, nbPerChunk, ..., where_to_store_tmp_data, and how ?)
+#options for tmp files: in RAM, on disk, on DB (can be distributed)
 {
 
 
-#TODO: just a wrapper which calls ppam.exe (system("...")) and reads output (binary) file to retrieve medoids + IDs
 	#on input: can be data or con; data handled by writing it to file (ascii or bin ?!),
-	#con handled 
-
-
-	#options for tmp files: in RAM, on disk, on DB (can be distributed)
-
 
 
 	if (!is.null(data))
 	{
 		#full data matrix
-		
+		index = 1
+		n = nrow(data)
+		while (index < n)
+		{
+			getCoeffs(data
+			index = index + nbSeriesPerChunk
+		}
 	} else if (!is.null(con))
 	{
 		#incremental connection
 		#read it one by one and get coeffs until nbSeriesPerChunk
 		#then launch a clustering task............
+		readLines()
 	} else
 		stop("at least 'data' or 'con' argument must be present")
 
 }
+
+getCoeffs = function(series)
+{
+	#... return wavelets coeffs : compute in parallel !
+}