Convert a graphviz dot digraph as string to SVG as string
Examples
dot2svg("digraph { A->B }")
#> [1] "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n<!DOCTYPE svg PUBLIC \"-//W3C//DTD SVG 1.1//EN\"\n \"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd\">\n<!-- Generated by graphviz version 2.40.1 (20161225.0304)\n -->\n<!-- Title: %0 Pages: 1 -->\n<svg width=\"62pt\" height=\"116pt\"\n viewBox=\"0.00 0.00 62.00 116.00\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n<g id=\"graph0\" class=\"graph\" transform=\"scale(1 1) rotate(0) translate(4 112)\">\n<title>%0</title>\n<polygon fill=\"#ffffff\" stroke=\"transparent\" points=\"-4,4 -4,-112 58,-112 58,4 -4,4\"/>\n<!-- A -->\n<g id=\"node1\" class=\"node\">\n<title>A</title>\n<ellipse fill=\"none\" stroke=\"#000000\" cx=\"27\" cy=\"-90\" rx=\"27\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"27\" y=\"-85.8\" font-family=\"Times,serif\" font-size=\"14.00\" fill=\"#000000\">A</text>\n</g>\n<!-- B -->\n<g id=\"node2\" class=\"node\">\n<title>B</title>\n<ellipse fill=\"none\" stroke=\"#000000\" cx=\"27\" cy=\"-18\" rx=\"27\" ry=\"18\"/>\n<text text-anchor=\"middle\" x=\"27\" y=\"-13.8\" font-family=\"Times,serif\" font-size=\"14.00\" fill=\"#000000\">B</text>\n</g>\n<!-- A->B -->\n<g id=\"edge1\" class=\"edge\">\n<title>A->B</title>\n<path fill=\"none\" stroke=\"#000000\" d=\"M27,-71.8314C27,-64.131 27,-54.9743 27,-46.4166\"/>\n<polygon fill=\"#000000\" stroke=\"#000000\" points=\"30.5001,-46.4132 27,-36.4133 23.5001,-46.4133 30.5001,-46.4132\"/>\n</g>\n</g>\n</svg>\n"