Step-by-step chart digitization
Hands-on walkthroughs for the chart types that come up most — pick one, follow the steps, and you'll have clean data inside ten minutes.
ALL WORKSHOPS
5 min readWorkshop: Reconstruct a Kaplan-Meier Curve
Extract a two-arm survival curve sampled at 6-month intervals. The workflow used by meta-analysts when authors don't share patient-level data — step-function precision included.
4 min readWorkshop: Dense Scatter Plot with Auto-Extract
Extract 250 points from a three-cluster scatter plot in 90 seconds using color-based auto-extraction. The workflow that turns an hour of clicking into a coffee-break job.
4 min readWorkshop: Log-Scale Chart Without Arithmetic Mistakes
Extract 12 data points from a semi-log decay curve spanning two orders of magnitude. The chart type AI extraction gets reliably wrong — and the calibration trick that makes it trivial for a deterministic tool.
4 min readWorkshop: Multi-Series Line Chart with a Legend
Extract 36 data points across three product lines from a year of monthly data. Practice the per-series workflow that AI chart extraction reliably gets wrong.
3 min readWorkshop: Extract a Simple Bar Chart (5 Minutes)
A guided practice extraction of a 5-bar chart with known ground-truth values. Hands-on intro to the four-step digitization workflow, with an answer key to grade yourself.