diff --git a/Cargo.toml b/Cargo.toml
index 8fde732..eecf24c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -30,7 +30,7 @@ natord = "1.0"
 ndarray = { version = "0.13", features = ["rayon", "serde"] }
 num = "0.3"
 piecewise-linear = "0.1"
-plotly = { version = "0.6", features = ["kaleido", "plotly_ndarray"], path = "../plotly/plotly" }
+# plotly = { version = "0.6", features = ["kaleido", "plotly_ndarray"], path = "../plotly/plotly" }
 rand = "0.8"
 rayon = "1.5"
 serde = "1.0"
diff --git a/src/driver.rs b/src/driver.rs
index 174cb8e..7054018 100644
--- a/src/driver.rs
+++ b/src/driver.rs
@@ -94,10 +94,6 @@ impl<R: Real, M: Material<R> + Send + Sync + 'static> Driver<R, M> {
         self.add_renderer(render::Y4MRenderer::new(output), &*name, step_frequency);
     }
 
-    pub fn add_plotly_renderer(&mut self, out_base: &str, step_frequency: u64) {
-        self.add_renderer(render::PlotlyRenderer::new(out_base), out_base, step_frequency);
-    }
-
     pub fn add_term_renderer(&mut self, step_frequency: u64) {
         self.add_renderer(render::ColorTermRenderer, "terminal", step_frequency);
     }
diff --git a/src/render.rs b/src/render.rs
index 19984f8..babe9cd 100644
--- a/src/render.rs
+++ b/src/render.rs
@@ -1,4 +1,4 @@
-use crate::geom::{Index, Meters, Vec2, Vec3, Vec3u};
+use crate::geom::{Meters, Vec2, Vec3};
 use crate::real::ToFloat as _;
 use crate::sim::{GenericSim, Sample, StaticSim};
 use crate::meas::{self, AbstractMeasurement};
@@ -7,7 +7,6 @@ use crossterm::style::{style, Color, PrintStyledContent};
 use font8x8::{BASIC_FONTS, GREEK_FONTS, UnicodeFonts as _};
 use log::trace;
 use num::integer::Integer;
-use plotly;
 use image::{RgbImage, Rgb};
 use imageproc::{pixelops, drawing};
 use rayon::prelude::*;
@@ -493,105 +492,6 @@ impl<S: GenericSim> Renderer<S> for Y4MRenderer {
     }
 }
 
-pub struct PlotlyRenderer {
-    out_base: String,
-}
-
-fn add_scatter(plot: &mut plotly::Plot, xv: &mut Vec<u32>, yv: &mut Vec<u32>, zv: &mut Vec<u32>, colors: &mut Vec<plotly::Rgba>) {
-    let xv = std::mem::replace(xv, Vec::new());
-    let yv = std::mem::replace(yv, Vec::new());
-    let zv = std::mem::replace(zv, Vec::new());
-    let colors = std::mem::replace(colors, Vec::new());
-    let scatter = plotly::Scatter::new3(xv, yv, zv)
-        .mode(plotly::common::Mode::Markers)
-        .marker(plotly::common::Marker::new()
-            .opacity(0.01)
-            //.size_array(sizes)
-            //.opacity_array(opacities)
-            .color_array(colors)
-        );
-    plot.add_trace(scatter);
-}
-
-impl PlotlyRenderer {
-    pub fn new(out_base: &str) -> Self {
-        Self {
-            out_base: out_base.into(),
-        }
-    }
-}
-
-impl<S: GenericSim> Renderer<S> for PlotlyRenderer {
-    fn render_z_slice(&self, state: &S, z: u32, measurements: &[Box<dyn AbstractMeasurement>], config: RenderConfig) {
-        default_render_z_slice(self, state, z, measurements, config)
-    }
-    fn render(&self, state: &S, _meas: &[Box<dyn AbstractMeasurement>], _config: RenderConfig) {
-        use plotly::{ImageFormat, Plot, Rgba};
-        // use plotly::common::Marker;
-        use plotly::layout::{AspectMode, Axis, Layout, LayoutScene};
-        let mut plot = Plot::new();
-        let scene = LayoutScene::new()
-            .x_axis(Axis::new().range(vec![0, state.width() as i32]))
-            .y_axis(Axis::new().range(vec![0, state.height() as i32]))
-            .z_axis(Axis::new().range(vec![0, state.depth() as i32]))
-            .aspect_mode(AspectMode::Cube);
-        let layout = Layout::new()
-            .scene(scene);
-        plot.set_layout(layout);
-
-        let mut xv = Vec::new();
-        let mut yv = Vec::new();
-        let mut zv = Vec::new();
-        // let mut opacities = Vec::new();
-        let mut colors = Vec::new();
-        for z in 0..state.depth() {
-            if xv.len() >= 120000 {
-                add_scatter(&mut plot, &mut xv, &mut yv, &mut zv, &mut colors);
-            }
-            for y in 0..state.height() {
-                for x in 0..state.width() {
-                    // if x%5 == 0 || y%5 == 0 || z%5 == 0 {
-                    //     continue;
-                    // }
-                    let cell = (state as &dyn GenericSim).get(Index(Vec3u::new(x, y, z)));
-                    xv.push(x);
-                    yv.push(y);
-                    zv.push(z);
-                    // opacities.push((cell.e().mag() * 0.1).min(1.0) as f64)
-                    let is_vacuum = cell.conductivity() == Vec3::zero() && cell.m() == Vec3::zero();
-                    let mat = cell.conductivity().mag().to_f32() + if is_vacuum {
-                        0.0
-                    } else {
-                        5.0
-                    };
-                    //let g = scale_unsigned_to_u8(mat, 10.0);
-                    //let r = scale_unsigned_to_u8(cell.m().mag(), 100.0);
-                    //let b = scale_unsigned_to_u8(cell.e().mag(), 1e2);
-                    let r = scale_unsigned_to_u8(cell.m().mag().to_f32(), 100.0);
-                    let g = scale_unsigned_to_u8(cell.e().mag().to_f32(), 1e2);
-                    let b = scale_unsigned_to_u8(mat, 10.0);
-                    let alpha = 1.0;
-                    colors.push(Rgba::new(r, g, b, alpha));
-                }
-            }
-            // let scatter = plotly::Scatter::new3(xv, yv, zv)
-            //     .mode(plotly::common::Mode::Markers)
-            //     .marker(plotly::common::Marker::new()
-            //         //.opacity(0.2)
-            //         //.size_array(sizes)
-            //         //.opacity_array(opacities)
-            //         .color_array(colors)
-            //     );
-            // plot.add_trace(scatter);
-        }
-        add_scatter(&mut plot, &mut xv, &mut yv, &mut zv, &mut colors);
-
-        let name = format!("{}{}", self.out_base, state.step_no());
-        let (im_w, im_h) = im_size(state, 2048, 2048);
-        plot.save(&*name, ImageFormat::PNG, im_w as _, im_h as _, 1.0);
-    }
-}
-
 struct MultiRendererElement<S> {
     step_frequency: u64,
     renderer: Box<dyn Renderer<S>>,