/
groundwater.Rmd
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groundwater.Rmd
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---
title: "Groundwater"
author: "Michael Rustler"
date: "`r Sys.time()`"
output: rmarkdown::html_vignette
vignette: >
%\VignetteIndexEntry{Groundwater}
%\VignetteEncoding{UTF-8}
%\VignetteEngine{knitr::rmarkdown}
editor_options:
chunk_output_type: console
---
```{r, include = FALSE}
# Should the data of only a subset of stations be downloaded?
use_random_subset_of_stations <- FALSE
knitr::opts_chunk$set(
collapse = TRUE,
comment = "#>"
)
```
## Define URLs and Helper Functions
```{r}
`%>%` <- magrittr::`%>%`
urls <- kwb.utils::resolve(list(
gh_wasserportal = "https://kwb-r.github.io/wasserportal",
stations_gwl_meta = "<gh_wasserportal>/stations_gwl_master.json",
stations_gwl_data = "<gh_wasserportal>/stations_gwl_data.json",
stations_gwq_meta = "<gh_wasserportal>/stations_gwq_master.json",
stations_gwq_data = "<gh_wasserportal>/stations_gwq_data.json",
stations_crosstable = "<gh_wasserportal>/stations_crosstable.json"
))
top_filter_data_table <- function(data) {
DT::datatable(data, filter = "top")
}
cat_file_enumeration <- function(base_url, files) {
cat(paste0(
sprintf("- [%s](%s/%s)", files, base_url, files),
collapse = "\n\n"
))
}
```
## Master Data
```{r master_data}
stations <- wasserportal::get_stations()
is_gw <- stringr::str_detect(names(stations$overview_list), "groundwater")
files <- wasserportal::list_masters_data_to_csv(stations$overview_list[is_gw])
```
The following groundwater master data `.csv` files are available for download:
```{r master_data_csv, echo = FALSE, results ='asis'}
cat_file_enumeration(urls$gh_wasserportal, files)
```
## Get Groundwater Data
```{r groundwater_data_raw_export}
if (use_random_subset_of_stations) {
stations_bak <- stations
x <- stations$overview_list$groundwater.level[sample(876, 10), ]
stations$overview_list$groundwater.level <- x
x <- stations$overview_list$groundwater.quality[sample(208, 10), ]
stations$overview_list$groundwater.quality <- x
}
gw_data_list <- wasserportal::get_groundwater_data(stations, debug = TRUE)
files <- wasserportal::list_timeseries_data_to_zip(gw_data_list)
files
# Data availability per parameter
gw_data_list %>%
dplyr::bind_rows() %>%
dplyr::count(Parameter, Einheit) %>%
dplyr::arrange(dplyr::desc(.data$n))
```
The following groundwater data `.zip` files are available for download:
```{r groundwater_data_zip, echo = FALSE, results ='asis'}
cat_file_enumeration(urls$gh_wasserportal, files)
```
## Do Your Own Analysis!
Download CSV/JSON/ZIP files scraped and prepared each day at 5 a.m. UTC for
re-use in R. The following data are available:
- **Data availability**
* [stations_crosstable.json](`r urls$stations_crosstable`):
available parameters per station (see `wasserportal::get_overview_options()`
for available options). Note: includes also surface monitoring stations!
```{r stations_crosstable}
library(wasserportal)
stations_crosstable <- jsonlite::fromJSON(urls$stations_crosstable)
str(stations_crosstable)
```
- **Master Data**
* [stations_gwl_master.json](`r urls$stations_gwl_meta`):
for GW level stations
* [stations_gwq_master.json](`r urls$stations_gwq_meta`):
for GW quality stations
- **Measurements**
* [stations_gwl_data.json](`r urls$stations_gwl_data`):
GW level measurements for stations
* [stations_gwq_data.json](`r urls$stations_gwq_data`):
GW quality measurements for all available parameters and stations
Please find an example below for merging all this information into a single
data frame:
```{r }
library(wasserportal)
site_number_to_character <- function(data) {
data %>%
dplyr::mutate(
Messstellennummer = as.character(.data$Messstellennummer)
)
}
left_join_by_site <- function(data, master_data) {
data %>%
dplyr::left_join(master_data, by = c("Messstellennummer" = "Nummer"))
}
### GW levels
gwl_master <- jsonlite::fromJSON(urls$stations_gwl_meta)
gwl_data <- jsonlite::fromJSON(urls$stations_gwl_data) %>%
site_number_to_character() %>%
left_join_by_site(gwl_master)
str(gwl_data)
### GW quality (all available parameters!)
gwq_master <- jsonlite::fromJSON(urls$stations_gwq_meta)
gwq_data <- jsonlite::fromJSON(urls$stations_gwq_data) %>%
site_number_to_character() %>%
left_join_by_site(gwq_master)
str(gwq_data)
### Merge GW level and quality into one data frame
gw_data <- dplyr::bind_rows(gwl_data, gwq_data)
str(gw_data)
```
## Data Availability
### GW Quality
```{r stations_gwq_data_helpers}
# Helper functions to be reused in different data summaries
select_main_columns <- function(data) {
data %>%
dplyr::select(dplyr::all_of(c(
"Messstellennummer",
"Parameter",
"Datum",
"Messwert"
)))
}
summarise_min_max_n_arrange <- function(data) {
data %>%
dplyr::summarise(
date_min = min(.data$Datum),
date_max = max(.data$Datum),
n = dplyr::n(),
.groups = "drop"
) %>%
dplyr::arrange(dplyr::desc(.data$n))
}
```
```{r stations_gwq_data_by_parameter_table}
gwq_data_by_parameter <- gwq_data %>%
select_main_columns() %>%
dplyr::group_by(.data$Parameter) %>%
summarise_min_max_n_arrange()
top_filter_data_table(gwq_data_by_parameter)
```
```{r stations_gwq_data_by_parameter_and_station_table}
gwq_data_by_parameter_and_station <- gwq_data %>%
select_main_columns() %>%
dplyr::group_by(.data$Parameter, .data$Messstellennummer) %>%
summarise_min_max_n_arrange()
top_filter_data_table(gwq_data_by_parameter_and_station)
```
## Export
### GW Quality
```{r export_xlsx_gwq, eval = FALSE}
openxlsx::write.xlsx(
x = list(
gwq_by_parameter = gwq_data_by_parameter,
gwq_by_parameter_and_station = gwq_data_by_parameter_and_station,
gwq_data = gwq_data,
gwq_master = gwq_master
),
file = "wasserportal_gwq_data.xlsx",
overwrite = TRUE
)
```