Spatial and Temporal Pattern Analysis of Land Use in Yangtze River Delta Based on Remote Sensing and GIS in Intelligent Environment

Table 2

Error matrix of TM image surveillance classification in 2019.

Data	1	2	3	4	5	6	7	8	9	Line total	User accuracy
1	16	0	0	0	0	0	0	0	0	16	100
2	0	30	3	1	0	3	0	0	0	36	94.40
3	0	3	12	0	0	0	0	0	0	15	86.43
4	0	0	0	46	2	3	0	1	3	55	78.32
5	0	2	0	0	74	2	0	0	0	78	89.25
6	0	1	1	0	5	87	0	0	0	94	97.14
7	0	0	0	0	0	1	12	2	0	15	90.10
8	0	0	0	0	0	2	2	6	0	10	88.90
9	0	1	0	4	0	0	0	0	35	40	84.04
Column total	16	37	16	51	81	102	14	9	38
Producer’s accuracy	100	87.46	81.20	87.65	94.68	86.54	92.13	89.82	87.78		Kappa index = 0.88

Note: 1 represents water area, 2 represents residential area, 3 represents industrial and mining land, 4 represents bare land, 5 represents plain desert grassland, 6 represents mountain desert grassland, 7 represents cultivated land, 8 represents woodland, and 9 represents surrounding land of buildings.