Chart.IT
A heat-load profile plotter in a single HTML file. Draw the 24-hour curve, edit the points, export the CSV.
01
The Curiosity
Load profiles get drawn in spreadsheets and pasted into reports. They are curves. They wanted a canvas.
02
The Build
One self-contained HTML file with its own charting code. Plot a heat-load profile over a day, drag and edit the points, and export the result as CSV for whatever comes next. It opens in its own window and has no dependencies to break.
03
The Result
A tool you can email to someone.
04
What I Learned
Some tools should be one file. Deployment, versioning and "does it still work" all become trivial when the whole thing fits in an attachment.