A Suite of Tools for Assessing Thematic Map Accuracy

Table 4

Sampling intensity among map categories.

Map category	1	2	3	4	5	6	7	8	9
Number of samples	7	11	5	6	5	5	5	5	5
Proportion of sample (%)	6.36	10.00	4.55	5.45	4.55	4.55	4.55	4.55	4.55
Proportion of area (%)	9.83	15.30	0.92	9.14	1.81	0.07	11.58	3.11	0.37
Ratio proportion of sample/proportion of area	0.65	0.65	4.94	0.60	2.51	68.01	0.39	1.46	12.42
Map category	10	11	12	13	14	15	16	17	sum
Number of samples	5	5	13	5	13	5	5	5	110
Proportion of sample (%)	4.55	4.55	11.82	4.55	11.82	4.55	4.55	4.55	100
Proportion of area (%)	6.54	0.81	16.22	0.18	23.89	0.08	0.15	0.01	100
Ratio proportion of sample/proportion of area	0.69	5.63	0.73	25.90	0.49	55.66	30.81	389.63