Add proper values for matplotlib coolwarm colormap

Makefile

@@ -1,11 +1,11 @@
 SRCS=$(shell find examples -type f -name "*.tex")
 PDFS=$(shell echo $(SRCS:.tex=.pdf) | sed -e "s/examples\\///g")
 
+all: $(PDFS)
+
 %.pdf: examples/%.tex
 	latexmk $<
 
-all: $(PDFS)
-
 clean:
 	rm -rf build
 

README.md

@@ -26,7 +26,7 @@ $ make
     ```bash
     $ docker build -f dockerfiles/Dockerfile.alpine . -t latex-common
     ```
-2. Build example
+2. Build examples
     ```bash
     $ docker run --rm -v $PWD:$PWD -w $PWD -u `id -u`:`id -g` latex-common make
     ```

common.tex

@@ -5,7 +5,6 @@
 % ||====================================================================||
 % ||                               WARNING                              ||
 % ||====================================================================||
-% ||                                                                    ||
 % || The following packages have to be included before using this file: ||
 % ||      amsmath                                                       ||
 % ||      pgfplots                                                      ||
@@ -190,9 +189,40 @@
 		color=(kit-yellow70!80!kit-orange70);
 	},
 	colormap={matplotlib}{
-		color=(blue!90!black);
-		color=(red!20!blue!20);
-		color=(red!90!black);
+		% Source: https://github.com/matplotlib/matplotlib/blob/e5a85f960b2d47eac371cff709b830d52c36d267/lib/matplotlib/_cm.py#L1114
+        rgb=(0.2298057,   0.298717966, 0.753683153)
+        rgb=(0.26623388,  0.353094838, 0.801466763)
+        rgb=(0.30386891,  0.406535296, 0.84495867 )
+        rgb=(0.342804478, 0.458757618, 0.883725899)
+        rgb=(0.38301334,  0.50941904,  0.917387822)
+        rgb=(0.424369608, 0.558148092, 0.945619588)
+        rgb=(0.46666708,  0.604562568, 0.968154911)
+        rgb=(0.509635204, 0.648280772, 0.98478814 )
+        rgb=(0.552953156, 0.688929332, 0.995375608)
+        rgb=(0.596262162, 0.726149107, 0.999836203)
+        rgb=(0.639176211, 0.759599947, 0.998151185)
+        rgb=(0.681291281, 0.788964712, 0.990363227)
+        rgb=(0.722193294, 0.813952739, 0.976574709)
+        rgb=(0.761464949, 0.834302879, 0.956945269)
+        rgb=(0.798691636, 0.849786142, 0.931688648)
+        rgb=(0.833466556, 0.860207984, 0.901068838)
+        rgb=(0.865395197, 0.86541021,  0.865395561)
+        rgb=(0.897787179, 0.848937047, 0.820880546)
+        rgb=(0.924127593, 0.827384882, 0.774508472)
+        rgb=(0.944468518, 0.800927443, 0.726736146)
+        rgb=(0.958852946, 0.769767752, 0.678007945)
+        rgb=(0.96732803,  0.734132809, 0.628751763)
+        rgb=(0.969954137, 0.694266682, 0.579375448)
+        rgb=(0.966811177, 0.650421156, 0.530263762)
+        rgb=(0.958003065, 0.602842431, 0.481775914)
+        rgb=(0.943660866, 0.551750968, 0.434243684)
+        rgb=(0.923944917, 0.49730856,  0.387970225)
+        rgb=(0.89904617,  0.439559467, 0.343229596)
+        rgb=(0.869186849, 0.378313092, 0.300267182)
+        rgb=(0.834620542, 0.312874446, 0.259301199)
+        rgb=(0.795631745, 0.24128379,  0.220525627)
+        rgb=(0.752534934, 0.157246067, 0.184115123)
+        rgb=(0.705673158, 0.01555616,  0.150232812)
 	}
 }
 

dockerfiles/Dockerfile.alpine

@@ -1,5 +1,4 @@
 FROM alpine:3.19
 
 RUN apk update && apk upgrade
-RUN apk add texlive
-RUN apk add texmf-dist-pictures
+RUN apk add make texlive texmf-dist-pictures

dockerfiles/Dockerfile.archlinux

@@ -3,7 +3,6 @@ FROM archlinux:latest
 RUN pacman-key --init
 RUN pacman-key --populate archlinux
 RUN pacman -Sy archlinux-keyring --noconfirm && pacman -Su --noconfirm
-# RUN pacman-key --refresh-keys
 
 RUN pacman -Syu --noconfirm
-RUN pacman -S perl texlive texlive-binextra texlive-pictures --noconfirm
+RUN pacman -S make perl texlive texlive-binextra texlive-pictures --noconfirm

dockerfiles/Dockerfile.ubuntu

@@ -3,5 +3,4 @@ FROM ubuntu:22.04
 ARG DEBIAN_FRONTEND=noninteractive
 
 RUN apt update -y && apt upgrade -y
-RUN apt install neovim git -y
-RUN apt install texlive latexmk texlive-pictures -y
+RUN apt install make texlive latexmk texlive-pictures -y