From 93cad5635316f2c6df77fb75c021a47a0b7566b5 Mon Sep 17 00:00:00 2001
From: "dependabot[bot]" <49699333+dependabot[bot]@users.noreply.github.com>
Date: Tue, 28 Jan 2025 03:52:05 +0000
Subject: [PATCH 1/3] Update rand requirement from 0.8 to 0.9

Updates the requirements on [rand](https://github.com/rust-random/rand) to permit the latest version.
- [Release notes](https://github.com/rust-random/rand/releases)
- [Changelog](https://github.com/rust-random/rand/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-random/rand/compare/0.8.0...0.9.0)

---
updated-dependencies:
- dependency-name: rand
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
---
 plotly/Cargo.toml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/plotly/Cargo.toml b/plotly/Cargo.toml
index 921675e0..37849eb4 100644
--- a/plotly/Cargo.toml
+++ b/plotly/Cargo.toml
@@ -40,7 +40,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 serde_repr = "0.1"
 serde_with = ">=2, <4"
-rand = "0.8"
+rand = "0.9"
 wasm-bindgen = { version = "0.2", optional = true }
 wasm-bindgen-futures = { version = "0.4", optional = true }
 

From b9884f0d3472be344149c358c2dd620fbf25edcf Mon Sep 17 00:00:00 2001
From: Andrei Gherghescu <8067229+andrei-ng@users.noreply.github.com>
Date: Wed, 29 Jan 2025 19:04:05 +0100
Subject: [PATCH 2/3] update code to work with rand=0.9 and rand_distr=0.5
 crates

Signed-off-by: Andrei Gherghescu <8067229+andrei-ng@users.noreply.github.com>
---
 docs/book/src/fundamentals/shapes.md    |  2 +-
 examples/3d_charts/Cargo.toml           |  2 +-
 examples/3d_charts/src/main.rs          |  4 ++--
 examples/basic_charts/Cargo.toml        |  4 ++--
 examples/basic_charts/src/main.rs       | 10 +++++++---
 examples/customization/Cargo.toml       |  2 +-
 examples/customization/src/main.rs      |  7 ++-----
 examples/shapes/Cargo.toml              |  4 ++--
 examples/shapes/src/main.rs             |  3 +--
 examples/statistical_charts/Cargo.toml  |  4 ++--
 examples/statistical_charts/src/main.rs | 16 ++++++++--------
 plotly/Cargo.toml                       |  2 +-
 plotly/src/plot.rs                      | 12 ++++++------
 plotly/src/traces/histogram.rs          |  2 +-
 14 files changed, 37 insertions(+), 37 deletions(-)

diff --git a/docs/book/src/fundamentals/shapes.md b/docs/book/src/fundamentals/shapes.md
index 4c34d684..04314a53 100644
--- a/docs/book/src/fundamentals/shapes.md
+++ b/docs/book/src/fundamentals/shapes.md
@@ -12,7 +12,7 @@ use plotly::layout::{
     ShapeType,
 };
 use plotly::{Bar, color::NamedColor, Plot, Scatter};
-use rand::thread_rng;
+use rand::rng;
 use rand_distr::{Distribution, Normal};
 ```
 
diff --git a/examples/3d_charts/Cargo.toml b/examples/3d_charts/Cargo.toml
index fab9a60d..01f56c64 100644
--- a/examples/3d_charts/Cargo.toml
+++ b/examples/3d_charts/Cargo.toml
@@ -6,5 +6,5 @@ edition = "2021"
 
 [dependencies]
 ndarray = "0.16"
-rand = "0.8"
+rand = "0.9"
 plotly = { path = "../../plotly" }
diff --git a/examples/3d_charts/src/main.rs b/examples/3d_charts/src/main.rs
index f4b7c03a..23da9718 100644
--- a/examples/3d_charts/src/main.rs
+++ b/examples/3d_charts/src/main.rs
@@ -218,8 +218,8 @@ fn colorscale_plot(show: bool) -> Plot {
     let _color: Vec<usize> = (0..z.len()).collect();
     let _color: Vec<u8> = (0..z.len()).map(|x| x as u8).collect();
     let _color: Vec<i16> = {
-        let mut rng = rand::thread_rng();
-        (0..z.len()).map(|_| rng.gen_range(0..100)).collect()
+        let mut rng = rand::rng();
+        (0..z.len()).map(|_| rng.random_range(0..100)).collect()
     };
 
     let color_max = color.iter().fold(f64::MIN, |acc, x| acc.max(*x as f64));
diff --git a/examples/basic_charts/Cargo.toml b/examples/basic_charts/Cargo.toml
index 54ffb5ee..c89e6adf 100644
--- a/examples/basic_charts/Cargo.toml
+++ b/examples/basic_charts/Cargo.toml
@@ -7,5 +7,5 @@ edition = "2021"
 [dependencies]
 ndarray = "0.16"
 plotly = { path = "../../plotly" }
-rand = "0.8"
-rand_distr = "0.4"
+rand = "0.9"
+rand_distr = "0.5"
diff --git a/examples/basic_charts/src/main.rs b/examples/basic_charts/src/main.rs
index 0de8a8ca..89c30571 100644
--- a/examples/basic_charts/src/main.rs
+++ b/examples/basic_charts/src/main.rs
@@ -38,7 +38,7 @@ fn simple_scatter_plot(show: bool) -> Plot {
 // ANCHOR: line_and_scatter_plots
 fn line_and_scatter_plots(show: bool) -> Plot {
     let n: usize = 100;
-    let mut rng = rand::thread_rng();
+    let mut rng = rand::rng();
     let random_x: Vec<f64> = Array::linspace(0., 1., n).into_raw_vec_and_offset().0;
     let random_y0: Vec<f64> = Normal::new(5., 1.)
         .unwrap()
@@ -273,8 +273,12 @@ fn colored_and_styled_scatter_plot(show: bool) -> Plot {
 // ANCHOR: large_data_sets
 fn large_data_sets(show: bool) -> Plot {
     let n: usize = 100_000;
-    let mut rng = rand::thread_rng();
-    let r: Vec<f64> = Uniform::new(0., 1.).sample_iter(&mut rng).take(n).collect();
+    let mut rng = rand::rng();
+    let r: Vec<f64> = Uniform::new(0., 1.)
+        .unwrap()
+        .sample_iter(&mut rng)
+        .take(n)
+        .collect();
     let theta: Vec<f64> = Normal::new(0., 2. * std::f64::consts::PI)
         .unwrap()
         .sample_iter(&mut rng)
diff --git a/examples/customization/Cargo.toml b/examples/customization/Cargo.toml
index bc794a09..74bc5cd9 100644
--- a/examples/customization/Cargo.toml
+++ b/examples/customization/Cargo.toml
@@ -6,6 +6,6 @@ edition = "2021"
 
 [dependencies]
 build_html = "2.5.0"
-rand = "0.8"
+rand = "0.9"
 ndarray = "0.16"
 plotly = { path = "../../plotly" }
diff --git a/examples/customization/src/main.rs b/examples/customization/src/main.rs
index 1988fc7f..c32c0090 100644
--- a/examples/customization/src/main.rs
+++ b/examples/customization/src/main.rs
@@ -121,14 +121,11 @@ fn write_html(html_data: &str) -> String {
     use std::env;
     use std::{fs::File, io::Write};
 
-    use rand::{
-        distributions::{Alphanumeric, DistString},
-        thread_rng,
-    };
+    use rand::distr::{Alphanumeric, SampleString};
 
     // Set up the temp file with a unique filename.
     let mut temp = env::temp_dir();
-    let mut plot_name = Alphanumeric.sample_string(&mut thread_rng(), 22);
+    let mut plot_name = Alphanumeric.sample_string(&mut rand::rng(), 22);
     plot_name.push_str(".html");
     plot_name = format!("plotly_{}", plot_name);
     temp.push(plot_name);
diff --git a/examples/shapes/Cargo.toml b/examples/shapes/Cargo.toml
index 799fea60..927e0540 100644
--- a/examples/shapes/Cargo.toml
+++ b/examples/shapes/Cargo.toml
@@ -7,5 +7,5 @@ edition = "2021"
 [dependencies]
 ndarray = "0.16"
 plotly = { path = "../../plotly" }
-rand = "0.8"
-rand_distr = "0.4"
+rand = "0.9"
+rand_distr = "0.5"
diff --git a/examples/shapes/src/main.rs b/examples/shapes/src/main.rs
index a00864b4..c582435b 100644
--- a/examples/shapes/src/main.rs
+++ b/examples/shapes/src/main.rs
@@ -9,7 +9,6 @@ use plotly::{
     },
     Bar, Plot, Scatter,
 };
-use rand::thread_rng;
 use rand_distr::{num_traits::Float, Distribution, Normal};
 
 // ANCHOR: filled_area_chart
@@ -433,7 +432,7 @@ fn circles_positioned_relative_to_the_axes(show: bool) -> Plot {
 
 // ANCHOR: highlighting_clusters_of_scatter_points_with_circle_shapes
 fn highlighting_clusters_of_scatter_points_with_circle_shapes(show: bool) -> Plot {
-    let mut rng = thread_rng();
+    let mut rng = rand::rng();
     let x0 = Normal::new(2., 0.45)
         .unwrap()
         .sample_iter(&mut rng)
diff --git a/examples/statistical_charts/Cargo.toml b/examples/statistical_charts/Cargo.toml
index b2b02c20..0dffe48e 100644
--- a/examples/statistical_charts/Cargo.toml
+++ b/examples/statistical_charts/Cargo.toml
@@ -7,5 +7,5 @@ edition = "2021"
 [dependencies]
 ndarray = "0.16"
 plotly = { path = "../../plotly" }
-rand = "0.8"
-rand_distr = "0.4"
+rand = "0.9"
+rand_distr = "0.5"
diff --git a/examples/statistical_charts/src/main.rs b/examples/statistical_charts/src/main.rs
index 4f82eaef..11b2ea21 100644
--- a/examples/statistical_charts/src/main.rs
+++ b/examples/statistical_charts/src/main.rs
@@ -170,9 +170,9 @@ fn colored_and_styled_error_bars(show: bool) -> Plot {
 // Box Plots
 // ANCHOR: basic_box_plot
 fn basic_box_plot(show: bool) -> Plot {
-    let mut rng = rand::thread_rng();
-    let uniform1 = Uniform::new(0.0, 1.0);
-    let uniform2 = Uniform::new(1.0, 2.0);
+    let mut rng = rand::rng();
+    let uniform1 = Uniform::new(0.0, 1.0).unwrap();
+    let uniform2 = Uniform::new(1.0, 2.0).unwrap();
     let n = 50;
 
     let mut y0 = Vec::with_capacity(n);
@@ -407,8 +407,8 @@ fn grouped_horizontal_box_plot(show: bool) -> Plot {
 fn fully_styled_box_plot(show: bool) -> Plot {
     let rnd_sample = |num, mul| -> Vec<f64> {
         let mut v: Vec<f64> = Vec::with_capacity(num);
-        let mut rng = rand::thread_rng();
-        let uniform = Uniform::new(0.0, mul);
+        let mut rng = rand::rng();
+        let uniform = Uniform::new(0.0, mul).unwrap();
         for _ in 0..num {
             v.push(uniform.sample(&mut rng));
         }
@@ -478,7 +478,7 @@ fn fully_styled_box_plot(show: bool) -> Plot {
 
 // Histograms
 fn sample_normal_distribution(n: usize, mean: f64, std_dev: f64) -> Vec<f64> {
-    let mut rng = rand::thread_rng();
+    let mut rng = rand::rng();
     let dist = Normal::new(mean, std_dev).unwrap();
     let mut v = Vec::<f64>::with_capacity(n);
     for _idx in 1..n {
@@ -488,8 +488,8 @@ fn sample_normal_distribution(n: usize, mean: f64, std_dev: f64) -> Vec<f64> {
 }
 
 fn sample_uniform_distribution(n: usize, lb: f64, ub: f64) -> Vec<f64> {
-    let mut rng = rand::thread_rng();
-    let dist = Uniform::new(lb, ub);
+    let mut rng = rand::rng();
+    let dist = Uniform::new(lb, ub).unwrap();
     let mut v = Vec::<f64>::with_capacity(n);
     for _idx in 1..n {
         v.push(dist.sample(&mut rng));
diff --git a/plotly/Cargo.toml b/plotly/Cargo.toml
index 37849eb4..79be1a3f 100644
--- a/plotly/Cargo.toml
+++ b/plotly/Cargo.toml
@@ -51,5 +51,5 @@ itertools = ">=0.10, <0.15"
 itertools-num = "0.1"
 ndarray = "0.16"
 plotly_kaleido = { path = "../plotly_kaleido", features = ["download"] }
-rand_distr = "0.4"
+rand_distr = "0.5"
 base64 = "0.22"
diff --git a/plotly/src/plot.rs b/plotly/src/plot.rs
index 6dbe22eb..90c0c5cc 100644
--- a/plotly/src/plot.rs
+++ b/plotly/src/plot.rs
@@ -3,8 +3,8 @@ use std::{fs::File, io::Write, path::Path};
 use dyn_clone::DynClone;
 use erased_serde::Serialize as ErasedSerialize;
 use rand::{
-    distributions::{Alphanumeric, DistString},
-    thread_rng,
+    distr::{Alphanumeric, SampleString},
+    rng,
 };
 use rinja::Template;
 use serde::Serialize;
@@ -254,7 +254,7 @@ impl Plot {
 
         // Set up the temp file with a unique filename.
         let mut temp = env::temp_dir();
-        let mut plot_name = Alphanumeric.sample_string(&mut thread_rng(), 22);
+        let mut plot_name = Alphanumeric.sample_string(&mut rng(), 22);
         plot_name.push_str(".html");
         plot_name = format!("plotly_{}", plot_name);
         temp.push(plot_name);
@@ -296,7 +296,7 @@ impl Plot {
 
         // Set up the temp file with a unique filename.
         let mut temp = env::temp_dir();
-        let mut plot_name = Alphanumeric.sample_string(&mut thread_rng(), 22);
+        let mut plot_name = Alphanumeric.sample_string(&mut rng(), 22);
         plot_name.push_str(".html");
         plot_name = format!("plotly_{}", plot_name);
         temp.push(plot_name);
@@ -354,13 +354,13 @@ impl Plot {
     pub fn to_inline_html(&self, plot_div_id: Option<&str>) -> String {
         let plot_div_id = match plot_div_id {
             Some(id) => id.to_string(),
-            None => Alphanumeric.sample_string(&mut thread_rng(), 20),
+            None => Alphanumeric.sample_string(&mut rng(), 20),
         };
         self.render_inline(&plot_div_id)
     }
 
     fn to_jupyter_notebook_html(&self) -> String {
-        let plot_div_id = Alphanumeric.sample_string(&mut thread_rng(), 20);
+        let plot_div_id = Alphanumeric.sample_string(&mut rng(), 20);
 
         let tmpl = JupyterNotebookPlotTemplate {
             plot: self,
diff --git a/plotly/src/traces/histogram.rs b/plotly/src/traces/histogram.rs
index 7b83b884..e1e8c422 100644
--- a/plotly/src/traces/histogram.rs
+++ b/plotly/src/traces/histogram.rs
@@ -220,7 +220,7 @@ where
     ///
     /// fn ndarray_to_traces() {
     ///     let n: usize = 1_250;
-    ///     let mut rng = rand::thread_rng();
+    ///     let mut rng = rand::rng();
     ///     let t: Array<f64, Ix1> = Array::range(0., 10., 10. / n as f64);
     ///     let mut ys: Array<f64, Ix2> = Array::zeros((n, 4));
     ///     let mut count = 0.;

From 8ebe67b700eed1a2f6f7d7e49e54c9c485095577 Mon Sep 17 00:00:00 2001
From: Andrei Gherghescu <8067229+andrei-ng@users.noreply.github.com>
Date: Wed, 29 Jan 2025 19:56:24 +0100
Subject: [PATCH 3/3] fix issues with latest getrandom 0.3 and wasm target

 - reworked the wasm use case and removed the wasm feature flag, putting
  everything behind the target specific dependencies

Signed-off-by: Andrei Gherghescu <8067229+andrei-ng@users.noreply.github.com>
---
 .cargo/config.toml                   |  2 ++
 .github/workflows/ci.yml             | 10 ++++------
 CHANGELOG.md                         |  4 ++++
 examples/wasm-yew-minimal/Cargo.toml |  2 +-
 plotly/Cargo.toml                    | 10 +++++-----
 plotly/src/bindings.rs               |  2 +-
 plotly/src/lib.rs                    |  6 +++---
 plotly/src/plot.rs                   |  9 +++++----
 8 files changed, 25 insertions(+), 20 deletions(-)
 create mode 100644 .cargo/config.toml

diff --git a/.cargo/config.toml b/.cargo/config.toml
new file mode 100644
index 00000000..2e07606d
--- /dev/null
+++ b/.cargo/config.toml
@@ -0,0 +1,2 @@
+[target.wasm32-unknown-unknown]
+rustflags = ['--cfg', 'getrandom_backend="wasm_js"']
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a60329ed..73799af2 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,12 +37,12 @@ jobs:
         with:
           components: clippy
           targets: wasm32-unknown-unknown
-      # lint the main library workspace excluding the wasm feature
-      - run: cargo clippy --features plotly_ndarray,plotly_image,kaleido -- -D warnings
-      # lint the plotly library with wasm enabled
-      - run: cargo clippy --package plotly --features wasm --target wasm32-unknown-unknown -- -D warnings
+      # lint the main library workspace for non-wasm target
+      - run: cargo clippy --all-features -- -D warnings
       # lint the non-wasm examples
       - run: cd ${{ github.workspace }}/examples && cargo clippy --workspace --exclude "wasm*" -- -D warnings
+      # lint the plotly library for wasm target
+      - run: cargo clippy --package plotly --target wasm32-unknown-unknown -- -D warnings
       # lint the wasm examples
       - run: cd ${{ github.workspace }}/examples && cargo clippy --target wasm32-unknown-unknown --package "wasm*"
 
@@ -83,8 +83,6 @@ jobs:
         with:
           components: llvm-tools-preview
       - uses: taiki-e/install-action@cargo-llvm-cov
-      # we are skipping anything to do with wasm here
-      - run: cargo llvm-cov --workspace --features plotly_ndarray,plotly_image,kaleido --lcov --output-path lcov.info
       - uses: codecov/codecov-action@v3
 
   build_examples:
diff --git a/CHANGELOG.md b/CHANGELOG.md
index ee28bed8..23f41d97 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.13.0] - 2025-02-xx
+### Changed
+- [[#277](https://github.com/plotly/plotly.rs/pull/277)] Removed `wasm` feature flag and put evrything behind target specific dependencies. Added `.cargo/config.toml` for configuration flags needed by `getrandom` version 0.3 on `wasm` targets.
+
 ## [0.12.1] - 2025-01-02
 ### Fixed
 - [[#269](https://github.com/plotly/plotly.rs/pull/269)] Fix publishing to crates.io issue
diff --git a/examples/wasm-yew-minimal/Cargo.toml b/examples/wasm-yew-minimal/Cargo.toml
index bc4156ba..7a094e75 100644
--- a/examples/wasm-yew-minimal/Cargo.toml
+++ b/examples/wasm-yew-minimal/Cargo.toml
@@ -8,7 +8,7 @@ authors = [
 edition = "2021"
 
 [dependencies]
-plotly = { path = "../../plotly", features = ["wasm"] }
+plotly = { path = "../../plotly" }
 yew = "0.21"
 yew-hooks = "0.3"
 log = "0.4"
diff --git a/plotly/Cargo.toml b/plotly/Cargo.toml
index 79be1a3f..576335f3 100644
--- a/plotly/Cargo.toml
+++ b/plotly/Cargo.toml
@@ -21,7 +21,6 @@ plotly_ndarray = ["ndarray"]
 plotly_image = ["image"]
 plotly_embed_js = []
 
-wasm = ["getrandom", "js-sys", "wasm-bindgen", "wasm-bindgen-futures"]
 with-axum = ["rinja/with-axum", "rinja_axum"]
 
 [dependencies]
@@ -29,9 +28,7 @@ rinja = { version = "0.3", features = ["serde_json"] }
 rinja_axum = { version = "0.3", optional = true }
 dyn-clone = "1"
 erased-serde = "0.4"
-getrandom = { version = "0.2", features = ["js"], optional = true }
 image = { version = "0.25", optional = true }
-js-sys = { version = "0.3", optional = true }
 plotly_derive = { version = "0.12", path = "../plotly_derive" }
 plotly_kaleido = { version = "0.12", path = "../plotly_kaleido", optional = true }
 ndarray = { version = "0.16", optional = true }
@@ -41,8 +38,11 @@ serde_json = "1.0"
 serde_repr = "0.1"
 serde_with = ">=2, <4"
 rand = "0.9"
-wasm-bindgen = { version = "0.2", optional = true }
-wasm-bindgen-futures = { version = "0.4", optional = true }
+
+[target.'cfg(target_arch = "wasm32")'.dependencies]
+getrandom = { version = "0.3", features = ["wasm_js"] }
+wasm-bindgen-futures = { version = "0.4" }
+wasm-bindgen = { version = "0.2" }
 
 [dev-dependencies]
 csv = "1.1"
diff --git a/plotly/src/bindings.rs b/plotly/src/bindings.rs
index 938430e3..9b86c05d 100644
--- a/plotly/src/bindings.rs
+++ b/plotly/src/bindings.rs
@@ -2,8 +2,8 @@
 //! context, where it is assumed that a remote copy of the Javascript Plotly
 //! library is available, (i.e. via a CDN).
 
-use js_sys::Object;
 use wasm_bindgen::prelude::*;
+use wasm_bindgen_futures::js_sys::Object;
 
 use crate::Plot;
 
diff --git a/plotly/src/lib.rs b/plotly/src/lib.rs
index 9d331d92..a4b0a3a4 100644
--- a/plotly/src/lib.rs
+++ b/plotly/src/lib.rs
@@ -6,9 +6,9 @@ extern crate rand;
 extern crate rinja;
 extern crate serde;
 
-#[cfg(all(feature = "kaleido", feature = "wasm"))]
+#[cfg(all(feature = "kaleido", target_family = "wasm"))]
 compile_error!(
-    r#"The "kaleido" and "wasm" features are mutually exclusive and cannot be activated at the same time. Please disable one or the other."#
+    r#"The "kaleido" feature is not available on "wasm" targets. Please compile without this feature for the wasm target family."#
 );
 
 #[cfg(feature = "plotly_ndarray")]
@@ -16,7 +16,7 @@ pub mod ndarray;
 #[cfg(feature = "plotly_ndarray")]
 pub use crate::ndarray::ArrayTraces;
 
-#[cfg(feature = "wasm")]
+#[cfg(target_family = "wasm")]
 pub mod bindings;
 
 pub mod common;
diff --git a/plotly/src/plot.rs b/plotly/src/plot.rs
index 90c0c5cc..ecc72934 100644
--- a/plotly/src/plot.rs
+++ b/plotly/src/plot.rs
@@ -534,10 +534,11 @@ impl Plot {
         serde_json::to_string(self).unwrap()
     }
 
-    #[cfg(feature = "wasm")]
+    #[cfg(target_family = "wasm")]
     /// Convert a `Plot` to a native Javasript `js_sys::Object`.
-    pub fn to_js_object(&self) -> js_sys::Object {
-        use wasm_bindgen::JsCast;
+    pub fn to_js_object(&self) -> wasm_bindgen_futures::js_sys::Object {
+        use wasm_bindgen_futures::js_sys;
+        use wasm_bindgen_futures::wasm_bindgen::JsCast;
         // The only reason this could fail is if to_json() produces structurally
         // incorrect JSON. That would be a bug, and would require fixing in the
         // to_json()/serialization methods, rather than here
@@ -734,7 +735,7 @@ mod tests {
 
     #[test]
     #[ignore] // Don't really want it to try and open a browser window every time we run a test.
-    #[cfg(not(feature = "wasm"))]
+    #[cfg(not(target_family = "wasm"))]
     fn show_image() {
         let plot = create_test_plot();
         plot.show_image(ImageFormat::PNG, 1024, 680);