[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"indicator-upday-es":3},"# Up Day (UPDAY)\n\n> StratCraft indicator page for positive session movement.\n\n**Route**: `\u002Findicators\u002Fupday\u002F`\n\n## What It Does\n\nUPDAY measures upward price movement over the selected lookback window.\n\n## Formula\n\n`Up Day = max(close - previous close, 0)`\n\n## Parameters\n\n- `period` - default `14`\n\n## C++23 API\n\n```cpp\n#include \u003Cnonabt\u002Findicators\u002Fupday.hpp>\nauto upDay = std::make_unique\u003Cnonabt::UPDAY>(data().close(), 14);\n```\n\n## Common Usage\n\n- Use it to isolate positive movement in a trend study.\n- Pair it with down-move logic for directional comparisons.\n- Helpful as an input to momentum or breadth calculations.\n"]