Epsilon : 1e-12
Linear array on nodes : Array<double> [
 + id             : const_val
 + size           : 13
 + nb_component   : 2
 + allocated size : 13
 + memory size    : 208.00Byte
 + values         : {{0, 0}, {13, 11}, {36, 18}, {23, 7}, {6.5, 5.5}, {24.5, 14.5}, {29.5, 12.5}, {11.5, 3.5}, {18, 9}, {20.5, 8}, {27, 13.5}, {15.5, 10}, {9, 4.5}}
]

Gradient on quad : Array<double> [
 + id             : grad_on_quad
 + size           : 16
 + nb_component   : 4
 + allocated size : 16
 + memory size    : 512.00Byte
 + values         : {{13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}, {13, 11, 23, 7}}
]

Node positions : Array<double> [
 + id             : mesh:coordinates
 + size           : 13
 + nb_component   : 2
 + allocated size : 2000
 + memory size    : 31.25KiByte
 + values         : {{0, 0}, {1, 0}, {1, 1}, {0, 1}, {0.5, 0}, {1, 0.5}, {0.5, 1}, {0, 0.5}, {0.5, 0.5}, {0.25, 0.75}, {0.75, 0.75}, {0.75, 0.25}, {0.25, 0.25}}
]

Gradient of nodes : Array<double> [
 + id             : grad_coord_on_quad
 + size           : 16
 + nb_component   : 4
 + allocated size : 16
 + memory size    : 512.00Byte
 + values         : {{1, 0, 0, 1}, {1, 0, 0, 1}, {1, 1.11022e-16, 0, 1}, {1, 0, -3.33067e-16, 1}, {1, 1.29199e-23, 0, 1}, {1, 2.22045e-16, 0, 1}, {1, 0, -1.42689e-23, 1}, {1, 0, 0, 1}, {1, 0, 0, 1}, {1, 0, -1.11022e-16, 1}, {1, 0, 0, 1}, {1, 1.58651e-24, 4.44089e-16, 1}, {1, 0, 0, 1}, {1, -4.44089e-16, 0, 1}, {1, 0, 0, 1}, {1, 0, 0, 1}}
]