diff --git a/src/main/R/SrV_Leipzig.R b/src/main/R/SrV_Leipzig.R
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+
+## 1. Libraries
+
+library(tidyverse)
+library(kableExtra) # for styling tables and output them in the viewer pane
+library(flextable) # for styling tables and outputs
+library(ggplot2)
+library(haven)
+
+## 2. Load Data
+
+H_SrV2018_Leipzig <- read_sav("../../../input/srv/H_SrV2018_Leipzig.sav", user_na = TRUE)
+P_SrV2018_Leipzig <- read_sav("../../../input/srv/P_SrV2018_Leipzig.sav", user_na = TRUE)
+W_SrV2018_Leipzig <- read_sav("../../../input/srv/W_SrV2018_Leipzig.sav", user_na = TRUE)
+
+
+## 3. Data Processing
+
+#creating district-groups
+H_SrV2018_Leipzig %>% count(UNTERBEZIRK)
+
+library(labelled)
+
+H_SrV2018_Leipzig <- H_SrV2018_Leipzig %>% mutate(UNTERBEZIRK_namav = case_when(
+  UNTERBEZIRK == "1"| UNTERBEZIRK == "2" ~ 1,
+  UNTERBEZIRK == "3" | UNTERBEZIRK == "4" | UNTERBEZIRK == "5" ~ 2,
+  UNTERBEZIRK == "6" | UNTERBEZIRK == "7" ~ 3,
+  UNTERBEZIRK == "8" ~ 4,
+  TRUE ~ -10
+)) %>% 
+  set_variable_labels(UNTERBEZIRK_namav = "Lower Level") %>% 
+  set_value_labels(UNTERBEZIRK_namav = c(
+    "Zone 1" = 1,
+    "Zone 2" = 2,
+    "Zone 3" = 3,
+    "Zone 4" = 4,
+    "missing values" = -10))
+
+#checking the new variable "UNTERBEZIRK_namav"
+H_SrV2018_Leipzig %>% count(UNTERBEZIRK_namav)
+
+H_SrV2018_Leipzig %>% count(as_factor(UNTERBEZIRK)) %>% flextable()
+
+#creating age groups
+P_SrV2018_Leipzig <- P_SrV2018_Leipzig %>% mutate(E_ALTER_GRUP = case_when(
+  V_ALTER >= 0 & V_ALTER < 18 ~ 1,
+  V_ALTER >= 18 & V_ALTER < 25 ~ 2,
+  V_ALTER >= 25 & V_ALTER < 35 ~ 3,
+  V_ALTER >= 35 & V_ALTER < 50 ~ 4,
+  V_ALTER >= 50 & V_ALTER < 65 ~ 5,
+  V_ALTER >= 65 ~ 6,
+  TRUE ~ -10
+)) %>% 
+  set_variable_labels(E_ALTER_GRUP = "Age Groups") %>% 
+  set_value_labels(E_ALTER_GRUP = c(
+    "0-18 years" = 1,
+    "18-24 years" = 2,
+    "25-34 years" = 3,
+    "35-49 years" = 4,
+    "50-64 years" = 5,
+    "65 and more years" = 6,
+    "missing values" = -10))
+
+
+# checking age groups
+P_SrV2018_Leipzig %>% count(E_ALTER_GRUP)
+P_SrV2018_Leipzig %>% count(E_ALTER_5)
+
+
+
+#E_HVM (variable for mean mode of transport)
+W_SrV2018_Leipzig %>% count(E_HVM_4)
+W_SrV2018_Leipzig %>% count(E_HVM) %>% print(n=Inf)
+
+#creating new variable E_HVM_namav
+W_SrV2018_Leipzig <- W_SrV2018_Leipzig  %>% mutate(E_HVM_namav = case_when(
+  E_HVM == 1 ~ 1,
+  E_HVM == 2 | E_HVM == 18 | E_HVM == 19 ~ 2,
+  E_HVM >=3 & E_HVM <= 6  ~ 3,
+  E_HVM >=7 & E_HVM <= 9  ~ 4,
+  E_HVM >=10 & E_HVM <= 17 ~ 5,
+  TRUE ~ -7
+)) %>% 
+  set_variable_labels(E_HVM_namav = "Main Transport Mode") %>% 
+  set_value_labels(E_HVM_namav = c(
+    "Walk" = 1,
+    "Bike" = 2,
+    "Car" = 3,
+    "Ride" = 4,
+    "PT" = 5,
+    "missing values" = -7))
+
+W_SrV2018_Leipzig %>% count(E_HVM_namav)
+
+#creating activity groups
+W_SrV2018_Leipzig %>% count(V_ZWECK) %>% print(n=Inf)
+
+W_SrV2018_Leipzig <- W_SrV2018_Leipzig  %>% mutate(V_ZWECK_namav = case_when(
+  V_ZWECK == 2 ~ 1,
+  V_ZWECK == 6 ~ 2,
+  V_ZWECK == 3 ~ 3,
+  V_ZWECK == 7 ~ 4,
+  V_ZWECK == 4 ~ 5,
+  V_ZWECK == 5 ~ 6,
+  V_ZWECK == 19 | V_ZWECK == 70 ~ 7,
+  V_ZWECK == 18 ~ 8,
+  V_ZWECK >= 11 & V_ZWECK <= 17 ~ 9,
+  V_ZWECK == 10 | V_ZWECK == 8 ~ 10,
+  V_ZWECK == 9 ~ 11,
+  V_ZWECK == 14 ~ 12,
+  V_ZWECK == 1 ~ 13,
+  TRUE ~ -10
+)) %>% 
+  set_variable_labels(V_ZWECK_namav = "Trip Purposes") %>% 
+  set_value_labels(V_ZWECK_namav = c(
+    "business" = 1,
+    "educ_higher" = 2,
+    "educ_kiga" = 3,
+    "educ_other" = 4,
+    "educ_primary" = 5,
+    "educ_secondary and educ_tertiary" = 6,
+    "errands" = 7,
+    "home" = 8,
+    "leisure" = 9,
+    "shop_daily" = 10,
+    "shop_other" = 11,    
+    "visit" = 12,
+    "work" = 13,
+    "missing values" = -10))
+
+W_SrV2018_Leipzig %>% count(V_ZWECK_namav)
+W_SrV2018_Leipzig %>% count(STICHTAG_WTAG)
+
+
+
+
+## 4. Person Level
+
+### 4.1 Number of Trips by Age Groups
+
+library(gt)
+
+P_SrV2018_Leipzig %>% select(E_ALTER_GRUP, E_ANZ_WEGE, GEWICHT_P) %>%
+  filter(E_ALTER_GRUP != -10 & E_ANZ_WEGE >= 0) %>% 
+  summarise(Mean_Trips = weighted.mean(E_ANZ_WEGE, GEWICHT_P)) %>%
+  gt() %>% fmt_number(decimals = 2)
+
+P_SrV2018_Leipzig %>% select(E_ALTER_GRUP, E_ANZ_WEGE, GEWICHT_P) %>%
+  filter(E_ALTER_GRUP != -10 & E_ANZ_WEGE >= 0) %>%  
+  group_by(as_factor(E_ALTER_GRUP)) %>% 
+  summarise(Mean_Trips = weighted.mean(E_ANZ_WEGE, GEWICHT_P)) %>% 
+  gt() %>% fmt_number(decimals = 2)
+
+
+unique(W_SrV2018_Leipzig$E_WEG_GUELTIG)
+
+
+### 4.2 Analysis of Mobile Persons by Age
+
+# Mobile Personen 
+P_SrV2018_Leipzig %>% count(E_MOBIL)
+
+library(gt)
+library(janitor)
+library(pollster)
+
+P_SrV2018_Leipzig %>% 
+  filter(E_ALTER_GRUP != -10, E_MOBIL != -7) %>% 
+  mutate(E_MOBIL = as_factor(E_MOBIL)) %>% 
+  crosstab(E_ALTER_GRUP, E_MOBIL, weight = GEWICHT_P, pct_type = "row", unwt_n = TRUE) %>% gt() %>% fmt_number(decimals = 1)
+
+
+unique(P_SrV2018_Leipzig$E_MOBIL)
+
+
+### 4.3 Analysis of Mobile Persons by Age and District
+
+# Unterbezirk ist auf Haushaltsebene kodiert
+# Schritt 1: auf Personenebene holen
+
+Join_Unterbezirk <- H_SrV2018_Leipzig %>% select(ST_CODE, HHNR, UNTERBEZIRK, UNTERBEZIRK_namav)
+
+P_SrV2018_Leipzig <- left_join(P_SrV2018_Leipzig, Join_Unterbezirk, by = c("ST_CODE", "HHNR"))
+
+P_SrV2018_Leipzig %>% 
+  filter(E_ALTER_GRUP != -10, E_MOBIL != -7) %>% 
+  mutate(E_MOBIL = as_factor(E_MOBIL)) %>% 
+  crosstab_3way(z = E_ALTER_GRUP, y = E_MOBIL, x = UNTERBEZIRK_namav, weight = GEWICHT_P, pct_type = "row", unwt_n = TRUE) %>% gt() %>% fmt_number(decimals = 1)
+
+P_SrV2018_Leipzig %>% count(UNTERBEZIRK)
+
+
+
+## 5. Trip Level
+
+### 5.1 Analysis of Trip Length
+
+
+W_SrV2018_Leipzig %>% filter(!is.na(E_LAENGE_5G) & E_WEG_GUELTIG == -1) %>% 
+  ggplot(aes(x = as_factor(E_LAENGE_5G))) +
+  geom_bar()
+
+#### 5.1.1 Average Trip Length by Age
+
+Join_E_ALTER_GRUP <- P_SrV2018_Leipzig %>% select(ST_CODE, HHNR, PNR, E_ALTER_GRUP)
+
+W_SrV2018_Leipzig <- left_join(W_SrV2018_Leipzig, Join_E_ALTER_GRUP, by = c("ST_CODE", "HHNR", "PNR"))
+#rm(test)
+
+W_SrV2018_Leipzig %>% count(V_LAENGE) %>% tail()
+
+W_SrV2018_Leipzig %>%
+  filter(E_ALTER_GRUP != -10 & E_WEG_GUELTIG == -1) %>%
+  group_by(as_factor(E_ALTER_GRUP)) %>% 
+  summarise(Mean_Laenge = weighted.mean(V_LAENGE, GEWICHT_W)) %>%
+  gt() %>% fmt_number(decimals = 2)
+
+
+### 5.2 Analysis of Main Transport Mode
+
+#### 5.2.1 Main Transport Mode
+
+W_SrV2018_Leipzig %>% filter(E_HVM_namav != -7) %>% 
+  count("Main Transport Mode" = as_factor(E_HVM_namav), wt = GEWICHT_W) %>% 
+  mutate("Share in percent" = round(n/sum(n)*100, 1)) %>% 
+  select(-n) %>% flextable()
+
+
+#### 5.2.2 Modal Split by Distance
+
+unique(W_SrV2018_Leipzig$V_LAENGE)
+
+# creating new distance groups
+W_SrV2018_Leipzig <- W_SrV2018_Leipzig %>%
+  mutate(V_LAENGE_namav = case_when(
+    V_LAENGE >= 0 & V_LAENGE < 1 ~ 1,
+    V_LAENGE >= 1 & V_LAENGE < 2 ~ 2,
+    V_LAENGE >= 2 & V_LAENGE < 5 ~ 3,
+    V_LAENGE >= 5 & V_LAENGE < 10 ~ 4,
+    V_LAENGE >= 10 & V_LAENGE < 20 ~ 5,
+    V_LAENGE >= 20 ~ 6,
+    TRUE ~ -999
+  )) %>% set_variable_labels(V_LAENGE_namav = "Distance Classes") %>% 
+  set_value_labels(V_LAENGE_namav = c("0-1 km" = 1, 
+                                      "1-2 km" = 2,
+                                      "2-5 km" = 3,
+                                      "5-10 km" = 4,
+                                      "10-20 km" = 5,
+                                      "20 km and more" = 6,
+                                      "missing values" = -999))
+
+unique(W_SrV2018_Leipzig$V_LAENGE_namav)
+W_SrV2018_Leipzig %>% count(V_LAENGE_namav)
+
+#check distance groups
+W_SrV2018_Leipzig_Laenge <- W_SrV2018_Leipzig %>% select(V_LAENGE,V_LAENGE_namav)
+
+
+#check distance groups and Main Transport Mode (NO FILTER FOR TRIP LENGTH)
+W_SrV2018_Leipzig %>% 
+  select(V_LAENGE_namav, E_HVM_namav) %>%
+  filter(V_LAENGE_namav >=0, E_HVM_namav >=0) %>% 
+  group_by(V_LAENGE_namav, E_HVM_namav) %>%
+  summarise(n = n()) %>% 
+  group_by(V_LAENGE_namav) %>% 
+  mutate(Share = n / sum(n) * 100) %>% 
+  ungroup() %>% 
+  ggplot(aes(x = as_factor(V_LAENGE_namav), y = Share, fill = as_factor(E_HVM_namav))) +
+  geom_bar(stat = "identity", position = "fill") +
+  labs(
+    title = "Modal Split by Distance",
+    x  = "Distance Classes", 
+    fill = "Transport Modes")+
+  geom_text(aes(label = ifelse(Share < 3, "", paste0(round(Share), "%"))), 
+            position = position_fill(vjust = 0.5)) +
+  theme_light() +
+  theme(text = element_text(size = 16))
+
+
+
+#check distance groups and Main Transport Mode (FILTER FOR TRIP LENGTH <=100km)
+
+#creating V_LAENGE_namav100 for filtering
+W_SrV2018_Leipzig <- W_SrV2018_Leipzig %>% 
+  mutate(V_LAENGE_namav100 = case_when(
+    V_LAENGE >=0 & V_LAENGE < 100 ~ 1,
+    TRUE ~ 0))
+
+W_SrV2018_Leipzig %>% count(V_LAENGE_namav100)
+
+W_SrV2018_Leipzig %>%
+  filter(V_LAENGE_namav >=0, E_HVM_namav >=0,V_LAENGE_namav100 == 1) %>% 
+  select(V_LAENGE_namav, E_HVM_namav) %>%
+  group_by(V_LAENGE_namav, E_HVM_namav) %>%
+  summarise(n = n()) %>% 
+  group_by(V_LAENGE_namav) %>% 
+  mutate(Share = n / sum(n) * 100) %>% 
+  ungroup() %>% 
+  ggplot(aes(x = as_factor(V_LAENGE_namav), y = Share, fill = as_factor(E_HVM_namav))) +
+  geom_bar(stat = "identity", position = "fill") +
+  labs(
+    title = "Modal Split by Distance with filter: trip length <100km",
+    x  = "Distance Classes", 
+    fill = "Transport Modes")+
+  geom_text(aes(label = ifelse(Share < 3, "", paste0(round(Share), "%"))), 
+            position = position_fill(vjust = 0.5)) +
+  theme_light() +
+  theme(text = element_text(size = 16))
+
+### 5.3 Analysis of Duration of Trips
+
+#### 5.3.1 Average Trip Duration
+
+glimpse(W_SrV2018_Leipzig$E_DAUER)
+
+W_SrV2018_Leipzig %>% 
+  filter(E_DAUER != -7 & E_WEG_GUELTIG == -1) %>% 
+  summarise(Mean_Duration = weighted.mean(E_DAUER, wt = GEWICHT_W)) %>% 
+  gt() %>% fmt_number(decimals = 2)
+
+
+#### 5.3.2 Average Trip Duration by Age
+
+W_SrV2018_Leipzig %>% 
+  filter(E_ALTER_GRUP != -10 & E_DAUER != -7 & E_WEG_GUELTIG == -1) %>%  
+  group_by(as_factor(E_ALTER_GRUP)) %>% 
+  summarise(Mean_Duration = weighted.mean(E_DAUER, wt = GEWICHT_W)) %>% 
+  gt() %>% fmt_number(decimals = 2)
+
+
+### 5.4 Analysis of Trip Purpose
+
+#### 5.4.1 Trip Purpose
+
+W_SrV2018_Leipzig %>% count(V_ZWECK_namav)
+
+W_SrV2018_Leipzig %>% 
+  filter(V_ZWECK_namav != -10) %>%  
+  count(as_factor(V_ZWECK_namav), wt = GEWICHT_W) %>% 
+  mutate("Anteil in %" = round(n/sum(n)*100, 1)) %>% 
+  # select(-n) %>% 
+  gt() %>% fmt_number(decimals = 1)
+
+#### 5.4.2 Trip Purpose by Age
+
+W_SrV2018_Leipzig %>% 
+  filter(E_ALTER_GRUP != -10 & V_ZWECK_namav != -10) %>%  
+  mutate(V_ZWECK = as_factor(V_ZWECK_namav)) %>% 
+  crosstab(E_ALTER_GRUP, V_ZWECK_namav, weight = GEWICHT_W, pct_type = "row", unwt_n = TRUE) %>% gt() %>% fmt_number(decimals = 1)
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