dst-start and dst-end: Add

tikz/dst-end/Makefile

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+SOURCE = dst-end
+DELAY = 80
+DENSITY = 300
+WIDTH = 500
+
+make:
+	pdflatex $(SOURCE).tex -output-format=pdf
+	make clean
+
+clean:
+	rm -rf  $(TARGET) *.class *.html *.log *.aux *.data *.gnuplot
+
+gif:
+	pdfcrop $(SOURCE).pdf
+	convert -verbose -delay $(DELAY) -loop 0 -density $(DENSITY) $(SOURCE)-crop.pdf $(SOURCE).gif
+	make clean
+
+png:
+	make
+	make svg
+	inkscape $(SOURCE).svg -w $(WIDTH) --export-png=$(SOURCE).png
+
+transparentGif:
+	convert $(SOURCE).pdf -transparent white result.gif
+	make clean
+
+svg:
+	#inkscape $(SOURCE).pdf --export-plain-svg=$(SOURCE).svg
+	pdf2svg $(SOURCE).pdf $(SOURCE).svg
+	# Necessary, as pdf2svg does not always create valid svgs:
+	inkscape $(SOURCE).svg --export-plain-svg=$(SOURCE).svg

tikz/dst-end/README.md

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+Compiled example
+----------------
+![Example](dst-end.png)

tikz/dst-end/dst-end.tex

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+\documentclass[varwidth=false, border=2pt]{standalone}
+
+\usepackage{pgfplots}
+\usepackage{tikz}
+
+\begin{document}
+\begin{tikzpicture}
+    \begin{axis}[
+        axis x line=middle,
+        axis y line=middle,
+        grid = major,
+        width=8cm,
+        height=8cm,
+        grid style={dashed, gray!30},
+        xmin= 0,     % start the diagram at this x-coordinate
+        xmax=24,    % end   the diagram at this x-coordinate
+        ymin= 0,     % start the diagram at this y-coordinate
+        ymax= 24,   % end   the diagram at this y-coordinate
+        xlabel=UTC of 2018-10-28,
+        ylabel=Local time,
+		/pgfplots/xtick={0, 2, ..., 24}, % make steps of length 2
+		/pgfplots/ytick={0, 2, ..., 24}, % make steps of length 2
+        x label style={at={(axis description cs:0.5,0.1)},anchor=north},
+        tick align=outside,
+        enlargelimits=false]
+      % plot the function
+	  \addplot[domain=0:3, blue, ultra thick,samples=20] {x+2};
+      \addplot[domain=3:23, blue, ultra thick,samples=20] {x+1};
+      \addplot[domain=23:24, blue, ultra thick,samples=20] {x-23};
+    \end{axis}
+\end{tikzpicture}
+\end{document}

tikz/dst-start/Makefile

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+SOURCE = dst-start
+DELAY = 80
+DENSITY = 300
+WIDTH = 500
+
+make:
+	pdflatex $(SOURCE).tex -output-format=pdf
+	make clean
+
+clean:
+	rm -rf  $(TARGET) *.class *.html *.log *.aux *.data *.gnuplot
+
+gif:
+	pdfcrop $(SOURCE).pdf
+	convert -verbose -delay $(DELAY) -loop 0 -density $(DENSITY) $(SOURCE)-crop.pdf $(SOURCE).gif
+	make clean
+
+png:
+	make
+	make svg
+	inkscape $(SOURCE).svg -w $(WIDTH) --export-png=$(SOURCE).png
+
+transparentGif:
+	convert $(SOURCE).pdf -transparent white result.gif
+	make clean
+
+svg:
+	#inkscape $(SOURCE).pdf --export-plain-svg=$(SOURCE).svg
+	pdf2svg $(SOURCE).pdf $(SOURCE).svg
+	# Necessary, as pdf2svg does not always create valid svgs:
+	inkscape $(SOURCE).svg --export-plain-svg=$(SOURCE).svg

tikz/dst-start/README.md

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+Compiled example
+----------------
+![Example](dst-start.png)

tikz/dst-start/dst-start.tex

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+\documentclass[varwidth=false, border=2pt]{standalone}
+
+\usepackage{pgfplots}
+\usepackage{tikz}
+
+\begin{document}
+\begin{tikzpicture}
+    \begin{axis}[
+        axis x line=middle,
+        axis y line=middle,
+        grid = major,
+        width=8cm,
+        height=8cm,
+        grid style={dashed, gray!30},
+        xmin= 0,     % start the diagram at this x-coordinate
+        xmax=24,    % end   the diagram at this x-coordinate
+        ymin= 0,     % start the diagram at this y-coordinate
+        ymax= 24,   % end   the diagram at this y-coordinate
+        xlabel=UTC of 2018-03-25,
+        ylabel=Local time,
+		/pgfplots/xtick={0, 2, ..., 24}, % make steps of length 2
+		/pgfplots/ytick={0, 2, ..., 24}, % make steps of length 2
+        x label style={at={(axis description cs:0.5,0.1)},anchor=north},
+        tick align=outside,
+        enlargelimits=false]
+      % plot the function
+	  \addplot[domain=0:1, blue, ultra thick,samples=20] {x+1};
+      \addplot[domain=1:22, blue, ultra thick,samples=20] {x+2};
+      \addplot[domain=22:24, blue, ultra thick,samples=20] {x-22};
+    \end{axis}
+\end{tikzpicture}
+\end{document}