dataframe_anatomie.svg

def dataframe_anatomie() -> str:
    cols = [("patient_id", "int", "1042"), ("alter", "int", "67"),
            ("aufnahmegrund", "str", "Sepsis"), ("laktat", "float", "3.4"),
            ("verstorben_30d", "bool", "True")]
    rows = [["1042", "67", "Sepsis", "3.4", "True"],
            ["1043", "54", "Pneumonie", "1.6", "False"],
            ["1044", "72", "Herzinsuff.", "2.0", "False"]]
    x0, y0 = 150, 96
    cw, hh, rh = 112, 52, 38
    tw = cw * len(cols)
    b = [eyebrow(40, 40, "Anatomie eines DataFrame")]
    # Kopf mit dtype-Pillen
    b.append(rect(x0, y0, tw, hh, r=0, fill=T["soft"]))
    for j, (name, dt, _) in enumerate(cols):
        cx = x0 + j * cw
        b.append(txt(cx + 14, y0 + 22, name, size=11.5, fill=T["ink"], w=600, mono=True))
        b.append(pill(cx + 14, y0 + 30, 42, 15, dt, T["acct"], T["acc2"], size=9.5, mono=True))
        if j: b.append(line(cx, y0, cx, y0 + hh + rh * len(rows), stroke=T["hair"]))
    # Datenzeilen
    for i, r in enumerate(rows):
        ry = y0 + hh + i * rh
        if i: b.append(line(x0, ry, x0 + tw, ry, stroke=T["hair"]))
        for j, v in enumerate(r):
            b.append(txt(x0 + j * cw + 14, ry + 24, v, size=11.5, fill=T["ink2"], mono=True))
    # Rahmen
    b.append(rect(x0, y0, tw, hh + rh * len(rows), r=10, fill="none", stroke=T["rule"]))
    # Spalten-Hervorhebung (eine Variable)
    hx = x0 + 3 * cw
    b.append(rect(hx, y0, cw, hh + rh * len(rows), r=8, fill="none", stroke=T["acc"], sw=1.6))
    b.append(txt(hx + cw / 2, y0 - 12, "eine Spalte = eine Variable", size=11, fill=T["acc"], w=600, anchor="middle"))
    # Zeilen-Label (eine Beobachtung)
    ry = y0 + hh + rh + rh / 2
    b.append(arrow(150 - 14, ry, x0 + 6, color=T["ok"]))
    b.append(txt(40, ry - 8, "eine Zeile =", size=11, fill=T["ok"], w=600))
    b.append(txt(40, ry + 8, "eine Beobachtung", size=11, fill=T["ok"], w=600))
    return canvas(760, 320, "".join(b),
                  "Ein DataFrame ist eine Tabelle: jede Spalte ist eine Variable mit einem Datentyp "
                  "(int, str, float, bool), jede Zeile eine Beobachtung (eine Patient:in).")