Advances in Continuous and Discrete Models

Theory and Modern Applications

Table 2 The errors for finite difference method in the sense of pointwise

From: Error estimate of a high accuracy difference scheme for Poisson equation with two integral boundary conditions

(x,y)	(0.25, 0.25)		(0.25, 0.5)		(0.5, 0.25)		(0.5, 0.5)
h		ratio		ratio		ratio		ratio
1/16	4.241E–03		5.471E–03		5.998E–03		7.737E–03
1/32	1.165E–03	3.64	1.437E–03	3.80	1.647E–03	3.64	2.035E–03	3.80
1/64	3.043E–04	3.83	3.688E–04	3.90	4.303E–04	3.83	5.216E–04	3.90
1/128	7.773E–05	3.91	9.337E–05	3.95	1.099E–04	3.92	1.320E–04	3.95

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