Building and Using Tools to See.
UVA Architecture + Data Science. IT Director. Instructor.
<svg width="800" height="500">
<line x1="50" y1="100" x2="100" y2="200" style="stroke:#000;" />
<line x1="100" y1="200" x2="300" y2="100" style="stroke:#f00;" />
<!-- line from x1,y1 to x2,y2 -->
<!-- note that ALL coordinates start with 0,0 in the top left -->
<rect width="300" height="200" x="200" y="200" style="fill:yellow; opacity: 0.5;" />
<!-- rectangle with width and heigh, starting at x,y location -->
<circle r="30" cx="300" cy="200" style="stroke:#0f0; stroke-width: 10px; fill: blue; opacity: .6;" />
<!-- circle with radius r, centered at cx, cy -->
<ellipse rx="50" ry="100" cx="300" cy="350" style="opacity:0.2;" transform="rotate(30 300 400)" />
<!-- ellipse with radii rx in x direction, ry in y direction, centered at cx,cy -->
<text x="300" y="130" style="font-family:Comic Sans MS" rotate="20">what do you see? ...</text>
<!-- text element, with anchor point located at x,y -->
<!-- the rotate attribute is a more advanced one that rotates each letter -->
<path d="M100,100 L50,0 L0,200" style="stroke:#777; fill:none" />
<!-- the path element combines may drawing types into a single description -->
<!-- L l lineto (x,y), H h horizontal lineto (x), V v vertical lineto (y) -->
<!-- Z z closepath -->
<!-- M m moveto (x,y) -->
<!-- C c curveto (x1 y1 x2 y2 x y), S s curveto (x2 y2 x y) -->
<!-- A a elliptical arc (rx ry x-axis-rotation large-arc-flag sweep-flag x y) -->
<!-- UPPER CASE COMMANDS USE ABSOLUTE COORDINATES, lowercase use relative coordinates -->
<path d="M200,200 A 150 150 0 0 1 400,200" style="stroke:#777;fill:none" />
<!-- a different path that makes a circular arc -->
</svg>
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.