VizChat Official

19 real exam questions broken down one by one: locating them in the original paper, building the diagrams step by step, and checking against key solution points.

Quarterly business review: revenue trends, breakdown, and conclusion page. Charts grow progressively as the narration plays, with the same chart continuing across pages.

Concept-explanation slides: function graphs compared line by line with code, ideal for technical sharing and teaching.

Product pitch: large type, few words, one focus per slide, with a roadmap and emphasis shots.

Show the readable text of any web page beside your analysis, with keyword highlighting and a link to the source.

Draw two or three overlapping sets, drop each member into the region it belongs to, and shade the part the question is about.

Show an external link as a compact card. The title, summary and site icon are whatever you give it — nothing is fetched from the page.

Lay out data in rows and columns, with inline math, marginal totals and a chi-square readout for 2×2 contingency tables.

Three ways to picture one batch of numbers: a histogram of classes, box plots side by side, or a stem and leaf plot.

Any Vega-Lite spec, drawn with your document theme, item anchors and clear error messages.

A hand-drawn concept map: boxes, arrows and sticky notes that draw themselves stroke by stroke as the story reveals them.

Galton board, random walk and Monte Carlo π: watch randomness settle into a pattern as samples accumulate.

Plot a number sequence from its formula or its recurrence, with running totals and terms you can point at.

Draw a probability tree: put the chance on every branch and read the odds of each outcome off the end of its path.

Show a PDF from your workspace or the web, jump to pages, and spotlight exact regions on a page.

Break a total into proportional slices — pie or donut, with exploded emphasis and per-slice colors.

Projectile, pendulum, spring and collision simulations: change one parameter and watch how the motion changes.

Show values and solution sets on a number line — solid or hollow points, open or closed intervals, arrows for infinity.

Put a 3D model on the slide, turn it to the angle you are talking about, and move, rotate or resize it by hand.

Draw points, lines, circles, polygons, curves, regions, angles, intervals and live measurements on a Cartesian or complex plane.

Turn key points into designed infographics — 200+ layout templates for lists, steps, comparisons and stats.

Draw solids in space — prisms, pyramids, cylinders, cones, spheres — with the edges you cannot see dashed, the way a textbook draws them.

Follow trends across time with multi-series lines, smooth or stepped curves, and editable data points.

Show a picture on the canvas and mark the parts worth pointing at while you explain it.

Points and routes on a map that flies from place to place as the story moves; bring the basemap: online tiles or a picture of the area.

Embed an HTML page from your workspace and spotlight any section with scroll and highlight.

The bar chart drawn by Apache ECharts: same data and operations as Bar Chart, with ECharts rendering and animation.

Draw a normal, binomial or listed distribution, shade the stretch you are asking about, and read the probability straight off it.