diff --git a/R/compareLCZ.R b/R/compareLCZ.R
index 8d949f6..7b0a4f8 100644
--- a/R/compareLCZ.R
+++ b/R/compareLCZ.R
@@ -365,7 +365,7 @@ compareLCZ<-function(sf1,geomID1="",column1,confid1="",wf1="bdtopo_2_2",
           write.table(x=echIntExpo, file =nom, append = TRUE, quote = TRUE, sep = ";",
                       eol = "\n", na = "NA", dec = ".",
                       qmethod = c("escape", "double"),
-                      fileEncoding = "", col.names=FALSE,row.names=F)
+                      fileEncoding = "", col.names=FALSE, row.names=F)
         }
         }
 ###################################################
@@ -393,12 +393,6 @@ areas<-matConfOut$areas
 percAgg<-matConfOut$percAgg
 
 
-
-
-  
-  
-  
-  
 ################################################
 #  GRAPHICS
 ################################################
diff --git a/R/compareMultipleLCZ.R b/R/compareMultipleLCZ.R
index 7225e26..f796793 100644
--- a/R/compareMultipleLCZ.R
+++ b/R/compareMultipleLCZ.R
@@ -21,9 +21,7 @@
 compareMultipleLCZ<-function(sfList, LCZcolumns, refCrs=NULL, sfWf=NULL, trimPerc=0.05){
   echInt<-createIntersect(sfList = sfList, columns = LCZcolumns , refCrs= refCrs, sfWf = sfWf)
   print(nrow(echInt))
-  echInt$area<-st_area(echInt)
   echInt <- echInt %>% subset(area>quantile(echInt$area, probs=trimPerc) & !is.na(area))
-  print(nrow(echInt))
   echIntnogeom<-st_drop_geometry(echInt)
   for (i in 1:(length(sfList) - 1)) {
     for(j in (i+1):length(sfList)){
diff --git a/R/createIntersect.R b/R/createIntersect.R
index 5e64dbf..a4e00a0 100644
--- a/R/createIntersect.R
+++ b/R/createIntersect.R
@@ -10,7 +10,7 @@
 #' are assigned to geometries resulting from intersection of all input geometries
 #' @export
 #' @examples
-createIntersect<-function(sfList, columns, refCrs=NULL, sfWf=NULL){
+createIntersect<-function(sfList, columns, refCrs=NULL, sfWf=NULL, minZeroArea=0.0001){
   sfInt<-sfList[[1]] %>% select(columns[1])
   if (is.null(refCrs)){refCrs<-st_crs(sfInt)}
   for (i in 2:length(sfList)){
@@ -19,8 +19,10 @@ createIntersect<-function(sfList, columns, refCrs=NULL, sfWf=NULL){
     sfInt<-st_intersection(sfInt,sfProv)
   }
   if (!is.null(sfWf) & length(sfWf) == length(sfList)){
-    names(sfInt)[1:(ncol(sfInt)-1)]<-paste0("LCZ",sfWf)
+    names(sfInt)[1:(ncol(sfInt)-1)]<-sfWf
   } else { names(sfInt)[1:(ncol(sfInt)-1)]<-paste0("LCZ",1:length(sfList)) }
+  sfInt$area<-units::drop_units(st_area(sfInt$geometry))
+  sfInt<-sfInt[sfInt$area>minZeroArea,]
   return(sfInt) 
 }
 
diff --git a/R/multipleCramer.R b/R/multipleCramer.R
index fd3a14a..fdc4d5c 100644
--- a/R/multipleCramer.R
+++ b/R/multipleCramer.R
@@ -1,12 +1,15 @@
-#' Computes Cramer's V for all pairs of one hot encoded levels of input LCZ classifications
-#' @param sfInt an sf object with several LCZ classifications to compare on the same intersected geometries, 
-#' typically an output of the createIntersec function
+#' Computes Cramer's V for all pairs of onehot encoded levels of input LCZ classifications
+#' @param sfInt an sf object with several LCZ classifications on the same (intersected) geometries, 
+#' typically an output of the createIntersect function
 #' @param columns a vector which contains names of LCZ classification columns
+#' @param nbOutAssociations the number of significant associations we want to extract, ie pair of levels 
+#' from two different workflows whose Cramer's V is high (association between LCZ 101 from workflow 1
+#' and LCZ 101 from workflow 2 are exclude, for instance, but can be read from the cramerLong output)
 #' @importFrom ggplot2 geom_sf guides ggtitle aes
 #' @importFrom caret dummyVars
 #' @import sf dplyr cowplot forcats units tidyr RColorBrewer utils grDevices rlang
-#' @return an sf file with values of LCZ from all the input 
-#' are assigned to geometries resulting from intersection of all input geometries
+#' @return Cramer's V between pairs of levels, in a matrix (cramerMatrix) or long form (cramerLong), 
+#' and a dataframe with the nbOutAssociation most significant association
 #' @export
 #' @examples
 multipleCramer<-function(sfInt, columns, nbOutAssociations ){ 
@@ -27,29 +30,37 @@ multipleCramer<-function(sfInt, columns, nbOutAssociations ){
       # print(table(sfDummy[,c(i,j)]))
     }
   }
+
   rownames(Vs)<-names(sfDummy)
   colnames(Vs)<-names(sfDummy)
 
-  threshold <- Vs %>% as.vector %>% unique %>% sort(decreasing=TRUE) %>% head(n = (nbOutAssociations+1)) %>% min
-  print(paste0("threshold = ", threshold))
+  VsLong<-data.frame(
+    LCZ_type_1 = rownames(Vs),
+    LCZ_type_2 = rep(colnames(Vs), each = nrow(Vs)),
+    cramerVs = as.vector(Vs)) %>% arrange(desc(cramerVs))%>% na.omit()
   
-  Mask<-Vs
-  Mask<-(Mask>=threshold)
-  Mask[Vs<threshold]<-NA
-  Mask[Vs==1]<- NA
+  # Remove association between modalities of a same LCZ classification
+  VsLong$wf1<-gsub(x = VsLong$LCZ_type_1,
+         pattern = "(\\w[0-9]*)\\.([0-9]+)", replacement = "\\1")
+  VsLong$wf2<-gsub(x = VsLong$LCZ_type_2,
+         pattern="(\\w[0-9]*)\\.([0-9]+)", replacement = "\\1")
+  VsLong$LCZ1<-gsub(x = VsLong$LCZ_type_1,
+                   pattern = "([A-Za-z]*\\d*)(\\.)(\\d+)", replacement = "\\3")
+  VsLong$LCZ2<-gsub(x = VsLong$LCZ_type_2,
+                   pattern = "([A-Za-z]*\\d*)(\\.)([0-9]+)", replacement = "\\3")
+  VsLong<-VsLong[,c("wf1", "LCZ1", "wf2", "LCZ2", "cramerVs", "LCZ_type_1","LCZ_type_2")]
+  VsLong<-VsLong[VsLong$wf1!=VsLong$wf2,]
+
 
-  keptRows<-apply(
-    X = apply(X = Mask, MARGIN = 1, is.na),
-    MARGIN = 1, sum)<ncol(Vs)
-  keptCols<-apply(
-    X = apply(X = Mask, MARGIN = 2, is.na ),
-    MARGIN = 2, sum)<nrow(Vs)
-  print("keptRows = ") ; print(keptRows)
-  print("keptCols = ") ; print(keptCols)
-  signifAssoc<-Vs[keptRows, keptCols]
-  signifAssoc[(signifAssoc>=1 | signifAssoc<threshold)]<-NA
+
+  VsLong<-VsLong[VsLong$LCZ_type_1!=VsLong$LCZ_type_2,]
+  threshold <- 
+    VsLong$cramerVs[VsLong$LCZ1!=VsLong$LCZ2] %>% as.vector %>% 
+      unique %>% sort(decreasing=TRUE) %>% head(n = (nbOutAssociations+1)) %>% min
+  signifAssoc<-VsLong[VsLong$cramerVs>=threshold & VsLong$LCZ1!=VsLong$LCZ2,]
+  print(paste0("threshold = ", threshold))
   
-  output<-list(cramerMatrix = Vs, signifAssoc = signifAssoc)
+  output<-list(cramerMatrix = Vs, cramerLong = VsLong, threshold = threshold, signifAssoc = signifAssoc)
   
   return(output)
 }
\ No newline at end of file
diff --git a/inst/tinytest/test_compareMultiple.R b/inst/tinytest/test_compareMultiple.R
index 47c85b6..5293928 100644
--- a/inst/tinytest/test_compareMultiple.R
+++ b/inst/tinytest/test_compareMultiple.R
@@ -44,9 +44,11 @@ prov2<-apply(X = test, MARGIN = 1, function(x) max(table(x)) )
 head(prov1)
 head(prov2)
 
-plot1<-showLCZ(sf = multicompare_test$echInt, column="LCZBDT22", wf="22")
-plot2<-showLCZ(sf = multicompare_test$echInt, column="LCZBDT11", wf="11")
-
-ggplot(data=multicompare_test$echInt) +
+plot1<-showLCZ(sf = multicompare_test$echInt, column="BDT22", wf="BDT22")
+plot2<-showLCZ(sf = multicompare_test$echInt, column="BDT11", wf="BDT1111")
+plot3<-showLCZ(sf = multicompare_test$echInt, column="OSM22", wf="OSM22")
+plot4<-showLCZ(sf = multicompare_test$echInt, column="WUDAPT", wf="WUDAPT")
+plot5<-ggplot(data=multicompare_test$echInt) +
   geom_sf(aes(fill=nbAgree, color=after_scale(fill)))+
   scale_fill_gradient(low = "red" , high = "green", na.value = NA)
+plot_grid(plot1, plot2, plot3, plot4, plot5)
diff --git a/inst/tinytest/test_multipleCramer.R b/inst/tinytest/test_multipleCramer.R
index 6c295fe..a260ea4 100644
--- a/inst/tinytest/test_multipleCramer.R
+++ b/inst/tinytest/test_multipleCramer.R
@@ -22,30 +22,41 @@ sfList<-list(BDT11 = sfBDT_11_78030, BDT22 = sfBDT_22_78030, OSM11= sf_OSM_11_Au
 
 
 intersected<-createIntersect(sfList = sfList, columns = c(rep("LCZ_PRIMARY",4),"lcz_primary"),
-                             sfWf = c("BDT11","BDT22","OSM11","OSM22","WUDAPT"))
-intersectedSample
+                             sfWf = c("BDT11","BDT22","OSM11","OSM22","WUDAPT"), minZeroArea=0.1)
+summary(intersected$area)
+min(intersected$area)
+intersected[intersected$area==0,]
 
-
-testVs<-multipleCramer(intersected, columns = names(intersected)[names(intersected)!="geometry"], nbOutAssociations = 5)
+testVs<-multipleCramer(intersected, columns = names(intersected)[names(intersected)!="geometry" &names(intersected)!="area"], 
+                       nbOutAssociations = 30)
 testVs$signifAssoc
-str(testVs)
-
-names6<-grep(x = rownames(testVs), pattern = "6$", value = TRUE)
-
-testVsSampled<-testVs[1:6,1:6]
-
-testMask<-testVsSampled
-ncol(testVsSampled)
-nrow(testVsSampled)
-testMask<-(testMask>0.004 & testMask<1)
-testMask[!testMask]<-NA
-
-keptRows<-apply(
-  X = apply(X = testMask, MARGIN = 1, is.na), 
-  MARGIN = 1, sum)<ncol(testVs)
-keptCols<-apply(
-  X = apply(X = testMask, MARGIN = 2, is.na ),
-  MARGIN = 2, sum)<nrow(testVs)
-signifAssoc<-testVsSampled[keptRows, keptCols]
-signifAssoc[(signifAssoc>=1 | signifAssoc<0.004)]<-NA
+testVs$cramerLong %>% head(10)
+
+intersectedDf<-st_drop_geometry(intersected)
+str(intersectedDf)
+summary(intersectedDf$area)
+min(intersectedDf$area)
+dataTest<-intersectedDf[ ,-6]
+dataTest <- as.data.frame(lapply(X = dataTest, factor))
+summary(dataTest)
+str(dataTest)
+weights<-(intersectedDf$area/sum(intersectedDf$area))
+length(weights)
+auffargisMCA<-MCA(X = dataTest[, names(dataTest)!="area"], ncp = 5, row.w = weights)
+plot.MCA(auffargisMCA, invisible = c("ind"))
+
+dataTestNo107<-dataTest[apply(dataTest, 1, function(x) all(x!="107")),]
+nrow(dataTestNo107)
+weightsNo107<-(intersectedDf$area/sum(intersectedDf$area))[
+  apply(dataTest, 1, function(x) all(x!="107"))]
+length(weightsNo107)
+
+auffargisMCANo107<-MCA(X = dataTestNo107[,names(dataTest)!="area"], ncp = 5) #, row.w = weightsNo107)
+plot.MCA(auffargisMCANo107, invisible= c("ind"))
+auffargisMCANo107Weights<-MCA(X = dataTestNo107[,names(dataTest)!="area"], ncp = 5, row.w = weightsNo107)
+plot.MCA(auffargisMCANo107Weights, invisible= c("ind"))
+
+
+str(auffargisMCANo107)
+