/
long_profile_from_points.rs
executable file
·548 lines (489 loc) · 19.9 KB
/
long_profile_from_points.rs
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/*
This tool is part of the WhiteboxTools geospatial analysis library.
Authors: Dr. John Lindsay
Created: 21/02/2018
Last Modified: 18/10/2019
License: MIT
*/
use whitebox_raster::*;
use whitebox_common::rendering::html::*;
use whitebox_common::rendering::LineGraph;
use whitebox_common::structures::Array2D;
use crate::tools::*;
use whitebox_vector::{ShapeType, Shapefile};
use std::env;
use std::f64;
use std::fs::File;
use std::io::prelude::*;
use std::io::BufWriter;
use std::io::{Error, ErrorKind};
use std::path;
use std::process::Command;
/// This tool can be used to create a [longitudinal profile](http://www.fao.org/docrep/003/X6841E/X6841E02.HTM) plot
/// for a set of vector points (`--points`). A longitudinal stream profile is a plot of elevation against downstream
/// distance. Most long profiles use distance from channel head as the distance measure. This tool, however, uses the
/// distance to the outlet cell, or mouth, as the distance measure.
///
/// The tool outputs an interactive SVG line graph embedded in an HTML document (`--output`). The user must specify the
/// names of a D8 pointer (`--d8_pntr`) image (flow direction), a vector points file (`--points`), and a digital
/// elevation model (`--dem`). The pointer image is used to traverse the flow path issuing from each initiation point
/// in the vector file; this pointer file should only be created using the D8 algorithm (`D8Pointer`).
///
/// By default, the pointer raster is assumed to use the clockwise indexing method used by WhiteboxTools.
/// If the pointer file contains ESRI flow direction values instead, the `--esri_pntr` parameter must be specified.
///
/// # See Also
/// `LongProfile`, `Profile`, `D8Pointer`
pub struct LongProfileFromPoints {
name: String,
description: String,
toolbox: String,
parameters: Vec<ToolParameter>,
example_usage: String,
}
impl LongProfileFromPoints {
pub fn new() -> LongProfileFromPoints {
// public constructor
let name = "LongProfileFromPoints".to_string();
let toolbox = "Stream Network Analysis".to_string();
let description = "Plots the longitudinal profiles from flow-paths initiating from a set of vector points.".to_string();
let mut parameters = vec![];
parameters.push(ToolParameter {
name: "Input D8 Pointer File".to_owned(),
flags: vec!["--d8_pntr".to_owned()],
description: "Input raster D8 pointer file.".to_owned(),
parameter_type: ParameterType::ExistingFile(ParameterFileType::Raster),
default_value: None,
optional: false,
});
parameters.push(ToolParameter {
name: "Input Vector Points File".to_owned(),
flags: vec!["--points".to_owned()],
description: "Input vector points file.".to_owned(),
parameter_type: ParameterType::ExistingFile(ParameterFileType::Vector(
VectorGeometryType::Point,
)),
default_value: None,
optional: false,
});
parameters.push(ToolParameter {
name: "Input DEM File".to_owned(),
flags: vec!["--dem".to_owned()],
description: "Input raster DEM file.".to_owned(),
parameter_type: ParameterType::ExistingFile(ParameterFileType::Raster),
default_value: None,
optional: false,
});
parameters.push(ToolParameter {
name: "Output HTML File".to_owned(),
flags: vec!["-o".to_owned(), "--output".to_owned()],
description: "Output HTML file.".to_owned(),
parameter_type: ParameterType::NewFile(ParameterFileType::Html),
default_value: None,
optional: false,
});
parameters.push(ToolParameter {
name: "Does the pointer file use the ESRI pointer scheme?".to_owned(),
flags: vec!["--esri_pntr".to_owned()],
description: "D8 pointer uses the ESRI style scheme.".to_owned(),
parameter_type: ParameterType::Boolean,
default_value: Some("false".to_owned()),
optional: true,
});
let sep: String = path::MAIN_SEPARATOR.to_string();
let e = format!("{}", env::current_exe().unwrap().display());
let mut parent = env::current_exe().unwrap();
parent.pop();
let p = format!("{}", parent.display());
let mut short_exe = e
.replace(&p, "")
.replace(".exe", "")
.replace(".", "")
.replace(&sep, "");
if e.contains(".exe") {
short_exe += ".exe";
}
let usage = format!(">>.*{0} -r={1} -v --wd=\"*path*to*data*\" --d8_pntr=D8.tif --points=stream_head.shp --dem=dem.tif -o=output.html --esri_pntr", short_exe, name).replace("*", &sep);
LongProfileFromPoints {
name: name,
description: description,
toolbox: toolbox,
parameters: parameters,
example_usage: usage,
}
}
}
impl WhiteboxTool for LongProfileFromPoints {
fn get_source_file(&self) -> String {
String::from(file!())
}
fn get_tool_name(&self) -> String {
self.name.clone()
}
fn get_tool_description(&self) -> String {
self.description.clone()
}
fn get_tool_parameters(&self) -> String {
let mut s = String::from("{\"parameters\": [");
for i in 0..self.parameters.len() {
if i < self.parameters.len() - 1 {
s.push_str(&(self.parameters[i].to_string()));
s.push_str(",");
} else {
s.push_str(&(self.parameters[i].to_string()));
}
}
s.push_str("]}");
s
}
fn get_example_usage(&self) -> String {
self.example_usage.clone()
}
fn get_toolbox(&self) -> String {
self.toolbox.clone()
}
fn run<'a>(
&self,
args: Vec<String>,
working_directory: &'a str,
verbose: bool,
) -> Result<(), Error> {
let mut d8_file = String::new();
let mut points_file = String::new();
let mut dem_file = String::new();
let mut output_file = String::new();
let mut esri_style = false;
if args.len() == 0 {
return Err(Error::new(
ErrorKind::InvalidInput,
"Tool run with no parameters.",
));
}
for i in 0..args.len() {
let mut arg = args[i].replace("\"", "");
arg = arg.replace("\'", "");
let cmd = arg.split("="); // in case an equals sign was used
let vec = cmd.collect::<Vec<&str>>();
let mut keyval = false;
if vec.len() > 1 {
keyval = true;
}
let flag_val = vec[0].to_lowercase().replace("--", "-");
if flag_val == "-d8_pntr" {
d8_file = if keyval {
vec[1].to_string()
} else {
args[i + 1].to_string()
};
} else if flag_val == "-points" {
points_file = if keyval {
vec[1].to_string()
} else {
args[i + 1].to_string()
};
} else if flag_val == "-dem" {
dem_file = if keyval {
vec[1].to_string()
} else {
args[i + 1].to_string()
};
} else if flag_val == "-o" || flag_val == "-output" {
output_file = if keyval {
vec[1].to_string()
} else {
args[i + 1].to_string()
};
} else if flag_val == "-esri_pntr" || flag_val == "-esri_style" {
if vec.len() == 1 || !vec[1].to_string().to_lowercase().contains("false") {
esri_style = true;
}
}
}
if verbose {
let tool_name = self.get_tool_name();
let welcome_len = format!("* Welcome to {} *", tool_name).len().max(28);
// 28 = length of the 'Powered by' by statement.
println!("{}", "*".repeat(welcome_len));
println!("* Welcome to {} {}*", tool_name, " ".repeat(welcome_len - 15 - tool_name.len()));
println!("* Powered by WhiteboxTools {}*", " ".repeat(welcome_len - 28));
println!("* www.whiteboxgeo.com {}*", " ".repeat(welcome_len - 23));
println!("{}", "*".repeat(welcome_len));
}
let sep: String = path::MAIN_SEPARATOR.to_string();
let mut progress: usize;
let mut old_progress: usize = 1;
if !d8_file.contains(&sep) && !d8_file.contains("/") {
d8_file = format!("{}{}", working_directory, d8_file);
}
if !points_file.contains(&sep) && !points_file.contains("/") {
points_file = format!("{}{}", working_directory, points_file);
}
if !dem_file.contains(&sep) && !dem_file.contains("/") {
dem_file = format!("{}{}", working_directory, dem_file);
}
if !output_file.contains(&sep) && !output_file.contains("/") {
output_file = format!("{}{}", working_directory, output_file);
}
if verbose {
println!("Reading pointer data...")
};
let pntr = Raster::new(&d8_file, "r")?;
if verbose {
println!("Reading points data...")
};
let points = Shapefile::read(&points_file)?;
if verbose {
println!("Reading DEM data...")
};
let dem = Raster::new(&dem_file, "r")?;
let start = Instant::now();
let rows = pntr.configs.rows as isize;
let columns = pntr.configs.columns as isize;
// make sure the input files have the same size
if dem.configs.rows != pntr.configs.rows || dem.configs.columns != pntr.configs.columns {
return Err(Error::new(
ErrorKind::InvalidInput,
"The input files must have the same number of rows and columns and spatial extent.",
));
}
// make sure the input vector file is of points type
if points.header.shape_type.base_shape_type() != ShapeType::Point {
return Err(Error::new(
ErrorKind::InvalidInput,
"The input vector data must be of point base shape type.",
));
}
let cell_size_x = pntr.configs.resolution_x;
let cell_size_y = pntr.configs.resolution_y;
let diag_cell_size = (cell_size_x * cell_size_x + cell_size_y * cell_size_y).sqrt();
let mut heads = vec![];
for record_num in 0..points.num_records {
let record = points.get_record(record_num);
let row = dem.get_row_from_y(record.points[0].y);
let col = dem.get_column_from_x(record.points[0].x);
heads.push((row, col));
if verbose {
progress = (100.0_f64 * row as f64 / (rows - 1) as f64) as usize;
if progress != old_progress {
println!("Finding channel heads: {}%", progress);
old_progress = progress;
}
}
}
if verbose {
println!("Traversing flowpaths...");
}
// Now traverse each flowpath starting from each stream head and
// retrieve the elevation and distance from outlet data.
let mut xdata = vec![];
let mut ydata = vec![];
let series_names = vec![];
let d_x = [1, 1, 1, 0, -1, -1, -1, 0];
let d_y = [-1, 0, 1, 1, 1, 0, -1, -1];
// Create a mapping from the pointer values to cells offsets.
// This may seem wasteful, using only 8 of 129 values in the array,
// but the mapping method is far faster than calculating z.ln() / ln(2.0).
// It's also a good way of allowing for different point styles.
let mut pntr_matches: [usize; 129] = [999usize; 129];
if !esri_style {
// This maps Whitebox-style D8 pointer values
// onto the cell offsets in d_x and d_y.
pntr_matches[1] = 0usize;
pntr_matches[2] = 1usize;
pntr_matches[4] = 2usize;
pntr_matches[8] = 3usize;
pntr_matches[16] = 4usize;
pntr_matches[32] = 5usize;
pntr_matches[64] = 6usize;
pntr_matches[128] = 7usize;
} else {
// This maps Esri-style D8 pointer values
// onto the cell offsets in d_x and d_y.
pntr_matches[1] = 1usize;
pntr_matches[2] = 2usize;
pntr_matches[4] = 3usize;
pntr_matches[8] = 4usize;
pntr_matches[16] = 5usize;
pntr_matches[32] = 6usize;
pntr_matches[64] = 7usize;
pntr_matches[128] = 0usize;
}
let grid_lengths = [
diag_cell_size,
cell_size_x,
diag_cell_size,
cell_size_y,
diag_cell_size,
cell_size_x,
diag_cell_size,
cell_size_y,
];
let mut flag: bool;
let (mut x, mut y): (isize, isize);
let mut dir: usize;
let mut traverse_num = 1u16;
let mut dist: f64;
let num_heads = heads.len();
let mut dist_traversed: Array2D<f64> = Array2D::new(rows, columns, -1f64, -32768f64)?;
let mut link_id: Array2D<u16> = Array2D::new(rows, columns, 0, 0)?;
let mut stream_lengths = vec![0f64; num_heads];
for h in 0..num_heads {
let (row, col) = heads[h];
x = col;
y = row;
dist = 0f64;
dist_traversed.set_value(y, x, dist);
link_id.set_value(y, x, traverse_num);
flag = true;
while flag {
// find the downslope neighbour
if pntr.get_value(y, x) > 0.0 {
dir = pntr.get_value(y, x) as usize;
if dir > 128 || pntr_matches[dir] == 999 {
return Err(Error::new(ErrorKind::InvalidInput,
"An unexpected value has been identified in the pointer image. This tool requires a pointer grid that has been created using either the D8 or Rho8 tools."));
}
x += d_x[pntr_matches[dir]];
y += d_y[pntr_matches[dir]];
dist += grid_lengths[pntr_matches[dir]];
if dist > dist_traversed.get_value(y, x) {
dist_traversed.set_value(y, x, dist);
link_id.set_value(y, x, traverse_num);
}
} else {
flag = false;
}
}
traverse_num += 1;
stream_lengths[h] = dist;
// update progress here
if verbose {
progress = (100.0_f64 * h as f64 / (num_heads - 1) as f64) as usize;
if progress != old_progress {
println!("Loop 1 of 2: {}%", progress);
old_progress = progress;
}
}
}
for h in 0..num_heads {
let (row, col) = heads[h];
traverse_num = link_id.get_value(row, col);
// series_names.push(format!("Profile {}", traverse_num));
let mut profile_xdata = vec![];
let mut profile_ydata = vec![];
profile_xdata.push(stream_lengths[h]);
profile_ydata.push(dem.get_value(row, col));
x = col;
y = row;
dist = 0f64;
flag = true;
while flag {
// find the downslope neighbour
if pntr.get_value(y, x) > 0.0 {
dir = pntr.get_value(y, x) as usize;
x += d_x[pntr_matches[dir]];
y += d_y[pntr_matches[dir]];
dist += grid_lengths[pntr_matches[dir]];
profile_xdata.push(stream_lengths[h] - dist);
profile_ydata.push(dem.get_value(y, x));
if link_id.get_value(y, x) != traverse_num {
flag = false;
}
} else {
flag = false;
}
}
let num_cells = profile_xdata.len();
if num_cells > 1 {
if profile_xdata[num_cells - 1] == 0f64 {
// Otherwise the origin of the plot won't be at zero.
profile_xdata[num_cells - 1] = 0.0000001f64;
}
xdata.push(profile_xdata.clone());
ydata.push(profile_ydata.clone());
traverse_num += 1;
}
// update progress here
if verbose {
progress = (100.0_f64 * h as f64 / (num_heads - 1) as f64) as usize;
if progress != old_progress {
println!("Loop 2 of 2: {}%", progress);
old_progress = progress;
}
}
}
let f = File::create(output_file.clone())?;
let mut writer = BufWriter::new(f);
writer.write_all(&r#"<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">
<head>
<meta content=\"text/html; charset=UTF-8\" http-equiv=\"content-type\">
<title>Long Profile From Points</title>"#.as_bytes())?;
// get the style sheet
writer.write_all(&get_css().as_bytes())?;
writer.write_all(
&r#"</head>
<body>
<h1>Long Profile From Points</h1>"#
.as_bytes(),
)?;
writer.write_all(
(format!(
"<p><strong>Input DEM</strong>: {}<br>",
dem.get_short_filename()
))
.as_bytes(),
)?;
writer.write_all(("</p>").as_bytes())?;
let elapsed_time = get_formatted_elapsed_time(start);
let multiples = traverse_num > 2 && traverse_num < 12;
let graph = LineGraph {
parent_id: "graph".to_string(),
width: 700f64,
height: 500f64,
data_x: xdata.clone(),
data_y: ydata.clone(),
series_labels: series_names.clone(),
x_axis_label: "Distance from Mouth".to_string(),
y_axis_label: "Elevation".to_string(),
draw_points: false,
draw_gridlines: true,
draw_legend: multiples,
draw_grey_background: false,
};
writer.write_all(
&format!("<div id='graph' align=\"center\">{}</div>", graph.get_svg()).as_bytes(),
)?;
writer.write_all("</body>".as_bytes())?;
let _ = writer.flush();
if verbose {
println!(
"\n{}",
&format!("Elapsed Time (excluding I/O): {}", elapsed_time)
);
}
if verbose {
if cfg!(target_os = "macos") || cfg!(target_os = "ios") {
let output = Command::new("open")
.arg(output_file.clone())
.output()
.expect("failed to execute process");
let _ = output.stdout;
} else if cfg!(target_os = "windows") {
// let output = Command::new("cmd /c start")
let output = Command::new("explorer.exe")
.arg(output_file.clone())
.output()
.expect("failed to execute process");
let _ = output.stdout;
} else if cfg!(target_os = "linux") {
let output = Command::new("xdg-open")
.arg(output_file.clone())
.output()
.expect("failed to execute process");
let _ = output.stdout;
}
println!("Complete! Please see {} for output.", output_file);
}
Ok(())
}
}