Metabolic rate by body mass

Metabolic rate against body mass for two groups of animals on logarithmic axes, with a least-squares line for each group: fitted to the logarithms, so a power law is a straight line. The description gives each line's slope, intercept and r². Illustrative data, with a phone variant.

Metabolic rate by body mass

examples/allometry.json

{
  "schemaVersion": 1,
  "type": "scatter",
  "title": "Metabolic rate by body mass",
  "source": "Illustrative data",
  "width": 760,
  "height": 480,
  "scatter": {
    "points": [
      {
        "x": 5.2,
        "y": 0.9,
        "group": "Small"
      },
      {
        "x": 64.8,
        "y": 7.9,
        "group": "Small"
      },
      {
        "x": 75.4,
        "y": 9.9,
        "group": "Small"
      },
      {
        "x": 325.4,
        "y": 31.2,
        "group": "Small"
      },
      {
        "x": 6,
        "y": 1.4,
        "group": "Small"
      },
      {
        "x": 25.8,
        "y": 9.2,
        "group": "Small"
      },
      {
        "x": 323.1,
        "y": 21.4,
        "group": "Small"
      },
      {
        "x": 2.8,
        "y": 0.7,
        "group": "Small"
      },
      {
        "x": 80.3,
        "y": 12.3,
        "group": "Small"
      },
      {
        "x": 167.4,
        "y": 14.4,
        "group": "Small"
      },
      {
        "x": 103.3,
        "y": 18.1,
        "group": "Small"
      },
      {
        "x": 59.3,
        "y": 9.3,
        "group": "Small"
      },
      {
        "x": 8,
        "y": 2.6,
        "group": "Small"
      },
      {
        "x": 26.2,
        "y": 4.5,
        "group": "Small"
      },
      {
        "x": 143.4,
        "y": 21.2,
        "group": "Small"
      },
      {
        "x": 579.8,
        "y": 37.1,
        "group": "Small"
      },
      {
        "x": 15.3,
        "y": 2.9,
        "group": "Small"
      },
      {
        "x": 640.9,
        "y": 40.8,
        "group": "Small"
      },
      {
        "x": 433.1,
        "y": 43.1,
        "group": "Small"
      },
      {
        "x": 4.5,
        "y": 1.1,
        "group": "Small"
      },
      {
        "x": 787.8,
        "y": 45.1,
        "group": "Small"
      },
      {
        "x": 8,
        "y": 1.8,
        "group": "Small"
      },
      {
        "x": 33.2,
        "y": 4.2,
        "group": "Small"
      },
      {
        "x": 56.9,
        "y": 8.9,
        "group": "Small"
      },
      {
        "x": 56.6,
        "y": 10.3,
        "group": "Small"
      },
      {
        "x": 612.1,
        "y": 469.3,
        "group": "Large"
      },
      {
        "x": 370.9,
        "y": 486.2,
        "group": "Large"
      },
      {
        "x": 3.1,
        "y": 1.7,
        "group": "Large"
      },
      {
        "x": 381.9,
        "y": 587.1,
        "group": "Large"
      },
      {
        "x": 51,
        "y": 33.5,
        "group": "Large"
      },
      {
        "x": 138.5,
        "y": 127.1,
        "group": "Large"
      },
      {
        "x": 52.6,
        "y": 61.7,
        "group": "Large"
      },
      {
        "x": 7.2,
        "y": 6.8,
        "group": "Large"
      },
      {
        "x": 932,
        "y": 1116.9,
        "group": "Large"
      },
      {
        "x": 1.8,
        "y": 1.1,
        "group": "Large"
      },
      {
        "x": 2.8,
        "y": 1.2,
        "group": "Large"
      },
      {
        "x": 7.6,
        "y": 5,
        "group": "Large"
      },
      {
        "x": 1.4,
        "y": 0.4,
        "group": "Large"
      },
      {
        "x": 69.8,
        "y": 78.2,
        "group": "Large"
      },
      {
        "x": 9.8,
        "y": 6.9,
        "group": "Large"
      },
      {
        "x": 439.3,
        "y": 541.8,
        "group": "Large"
      },
      {
        "x": 989.8,
        "y": 951.5,
        "group": "Large"
      },
      {
        "x": 8.5,
        "y": 7.1,
        "group": "Large"
      },
      {
        "x": 1.2,
        "y": 0.7,
        "group": "Large"
      },
      {
        "x": 3.9,
        "y": 1.7,
        "group": "Large"
      },
      {
        "x": 2.9,
        "y": 2,
        "group": "Large"
      },
      {
        "x": 1.3,
        "y": 0.8,
        "group": "Large"
      },
      {
        "x": 751.6,
        "y": 620.8,
        "group": "Large"
      },
      {
        "x": 489.8,
        "y": 372.6,
        "group": "Large"
      },
      {
        "x": 36.3,
        "y": 31.5,
        "group": "Large"
      }
    ],
    "regression": true,
    "xScale": "log",
    "yScale": "log",
    "xTitle": "Body mass (g)",
    "yTitle": "Metabolic rate (W)"
  },
  "mobile": {
    "width": 400,
    "height": 480
  }
}

Source: Illustrative data

Show chart data

Data for Metabolic rate by body mass
Point	Group	Body mass (g)	Metabolic rate (W)
1	Small	5.2	0.9
2	Small	64.8	7.9
3	Small	75.4	9.9
4	Small	325.4	31.2
5	Small	6	1.4
6	Small	25.8	9.2
7	Small	323.1	21.4
8	Small	2.8	0.7
9	Small	80.3	12.3
10	Small	167.4	14.4
11	Small	103.3	18.1
12	Small	59.3	9.3
13	Small	8	2.6
14	Small	26.2	4.5
15	Small	143.4	21.2
16	Small	579.8	37.1
17	Small	15.3	2.9
18	Small	640.9	40.8
19	Small	433.1	43.1
20	Small	4.5	1.1
21	Small	787.8	45.1
22	Small	8	1.8
23	Small	33.2	4.2
24	Small	56.9	8.9
25	Small	56.6	10.3
26	Large	612.1	469.3
27	Large	370.9	486.2
28	Large	3.1	1.7
29	Large	381.9	587.1
30	Large	51	33.5
31	Large	138.5	127.1
32	Large	52.6	61.7
33	Large	7.2	6.8
34	Large	932	1116.9
35	Large	1.8	1.1
36	Large	2.8	1.2
37	Large	7.6	5
38	Large	1.4	0.4
39	Large	69.8	78.2
40	Large	9.8	6.9
41	Large	439.3	541.8
42	Large	989.8	951.5
43	Large	8.5	7.1
44	Large	1.2	0.7
45	Large	3.9	1.7
46	Large	2.9	2
47	Large	1.3	0.8
48	Large	751.6	620.8
49	Large	489.8	372.6
50	Large	36.3	31.5

Scatter plot (regression, log axes)
Fit a power law