Formatos de gráficos del norte y sur de la India

The D1 birth chart is one underlying data set: sidereal signs, planets, Lagna, house numbers, and lordships. North Indian and South Indian charts display that same data differently. If the engine calculates Moon in Cancer house 7, both views should show the same fact, even though the boxes and reading path look different.

This matters for trust. A user should never think the app calculated two different charts. The product should say: both views show the same D1 birth chart; use the format that matches your reading tradition.

In the South Indian style, zodiac signs occupy fixed positions in the chart layout. Aries, Taurus, Gemini, and the rest remain in the same visual boxes. The Lagna marker tells the reader where house 1 begins, and houses are counted from that sign.

This format is powerful for readers who think sign-first. You can immediately see which signs contain planets, then trace house meaning from the Lagna. If Capricorn is Lagna, Capricorn becomes house 1 even though Capricorn's visual box is fixed in the South Indian layout.

In the North Indian style, the house positions are fixed. House 1, 4, 7, and 10 have stable visual locations, and signs are placed into those houses based on Lagna. This format is powerful for readers who think house-first.

If Capricorn is Lagna, house 1 contains Capricorn, house 2 contains Aquarius, and so on. The visual layout emphasizes life areas immediately: partnership, career, home, and identity can be located by house position before reading sign style.

The app builds chart entries by sign and house from the calculated D1 data. The South Indian view displays fixed sign cells and annotates house numbers from Lagna. The North Indian view displays house cells and fills in sign and planet labels from the same D1 entries.

This means the toggle is a display preference. It should not affect dasha, dignity, house lordship, aspects, divisional charts, or compatibility calculations. If a user sees a mismatch, that is a UI or data-mapping issue to audit, not a second astrological calculation.

Choose one planet and read it in both displays. In South Indian format, find its sign first, then count its house from Lagna. In North Indian format, find its house first, then read the sign inside that house. If both routes do not lead to the same answer, stop and audit the chart data.

This exercise trains a student to separate the chart from the diagram. The diagram is a reading aid. The chart data is the calculation.