snode

import taichi as ti
ti.init()
x = ti.field(ti.f32)
snode = ti.root.dense(ti.ij,(10,10))
snode.place(x)
# same as 
# x = ti.field(ti.f32, (10,10))

print(x.shape)


x[1,3] = 1
x[1,5] = 2.1
x[2,3] = 3.5
x[3,3] = 2

@ti.kernel
def test():
    for i,j in x:
        print('x[{},{}]={}'.format(i,j,x[i,j]))
        
test()

x[0,0]=0.000000
x[0,1]=0.000000
x[0,2]=0.000000
x[0,3]=0.000000
x[0,4]=0.000000
x[0,5]=0.000000
x[0,6]=0.000000
x[0,7]=0.000000
x[0,8]=0.000000
x[0,9]=0.000000
x[1,0]=0.000000
x[1,1]=0.000000
x[1,2]=0.000000
x[1,3]=1.000000
x[1,4]=0.000000
x[1,5]=2.100000
x[1,6]=0.000000
x[1,7]=0.000000
x[1,8]=0.000000
x[1,9]=0.000000
x[2,0]=0.000000
x[2,1]=0.000000
x[2,2]=0.000000
x[2,3]=3.500000
x[2,4]=0.000000
x[2,5]=0.000000
x[2,6]=0.000000
x[2,7]=0.000000
x[2,8]=0.000000
x[2,9]=0.000000
x[3,0]=0.000000
x[3,1]=0.000000
x[3,2]=0.000000
x[3,3]=2.000000
x[3,4]=0.000000
x[3,5]=0.000000
x[3,6]=0.000000
x[3,7]=0.000000
x[3,8]=0.000000
x[3,9]=0.000000
x[4,0]=0.000000
x[4,1]=0.000000
x[4,2]=0.000000
x[4,3]=0.000000
x[4,4]=0.000000
x[4,5]=0.000000
x[4,6]=0.000000
x[4,7]=0.000000
x[4,8]=0.000000
x[4,9]=0.000000
x[5,0]=0.000000
x[5,1]=0.000000
x[5,2]=0.000000
x[5,3]=0.000000
x[5,4]=0.000000
x[5,5]=0.000000
x[5,6]=0.000000
x[5,7]=0.000000
x[5,8]=0.000000
x[5,9]=0.000000
x[6,0]=0.000000
x[6,1]=0.000000
x[6,2]=0[Taichi] Starting on arch=arm64
.000000
x[6,3]=0.000000
x[6,4]=0.000000
x[6,5]=0.000000
x[6,6]=0.000000
x[6,7]=0.000000
x[6,8]=0.000000
x[6,9]=0.000000
x[7,0]=0.000000
x[7,1]=0.000000
x[7,2]=0.000000
x[7,3]=0.000000
x[7,4]=0.000000
x[7,5]=0.000000
x[7,6]=0.000000
x[7,7]=0.000000
x[7,8]=0.000000
x[7,9]=0.000000
x[8,0]=0.000000
x[8,1]=0.000000
x[8,2]=0.000000
x[8,3]=0.000000
x[8,4]=0.000000
x[8,5]=0.000000
x[8,6]=0.000000
x[8,7]=0.000000
x[8,8]=0.000000
x[8,9]=0.000000
x[9,0]=0.000000
x[9,1]=0.000000
x[9,2]=0.000000
x[9,3]=0.000000
x[9,4]=0.000000
x[9,5]=0.000000
x[9,6]=0.000000
x[9,7]=0.000000
x[9,8]=0.000000
x[9,9]=0.000000
(10, 10)

import taichi as ti
ti.init()
x = ti.Vector.field(3,ti.f32)
snode = ti.root.dense(ti.ij,(10,10))
snode.place(x)
# same as 
# x = ti.field(ti.f32, (10,10))

print(x.shape)


x[1,3] = ti.Vector([1,2,3])
x[1,5] = ti.Vector([1,2,3])
x[2,3] = ti.Vector([1,2,3])
x[3,3] = ti.Vector([1,2,3])

@ti.kernel
def test():
    for i,j in x:
        print('x[{},{}]'.format(i,j),end='\t')
        print(x[i,j])
        
test()

x[0,0]  [0.000000, 0.000000, 0.000000]
x[0,1]  [0.000000, 0.000000, 0.000000]
x[0,2]  [0.000000, 0.000000, 0.000000]
x[0,3]  [0.000000, 0.000000, 0.000000]
x[0,4]  [0.000000, 0.000000, 0.000000]
x[0,5]  [0.000000, 0.000000, 0.000000]
x[0,6]  [0.000000, 0.000000, 0.000000]
x[0,7]  [0.000000, 0.000000, 0.000000]
x[0,8]  [0.000000, 0.000000, 0.000000]
x[0,9]  [0.000000, 0.000000, 0.000000]
x[1,0]  [0.000000, 0.000000, 0.000000]
x[1,1]  [0.000000, 0.000000, 0.000000]
x[1,2]  [0.000000, 0.000000, 0.000000]
x[1,3]  [1.000000, 2.000000, 3.000000]
x[1,4]  [0.000000, 0.000000, 0.000000]
x[1,5]  [1.000000, 2.000000, 3.000000]
x[1,6]  [0.000000, 0.000000, 0.000000]
x[1,7]  [0.000000, 0.000000, 0.000000]
x[1,8]  [0.000000, 0.000000, 0.000000]
x[1,9]  [0.000000, 0.000000, 0.000000]
x[2,0]  [0.000000, 0.000000, 0.000000]
x[2,1]  [0.000000, 0.000000, 0.000000]
x[2,2]  [0.000000, 0.000000, 0.000000]
x[2,3]  [1.000000, 2.000000, 3.000000]
x[2,4]  [0.000000, 0.000000, 0.000000]
x[2,5]  [0.000000, 0.000000, 0.000000]
x[2,6]  [0.00[Taichi] Starting on arch=arm64
0000, 0.000000, 0.000000]
x[2,7]  [0.000000, 0.000000, 0.000000]
x[2,8]  [0.000000, 0.000000, 0.000000]
x[2,9]  [0.000000, 0.000000, 0.000000]
x[3,0]  [0.000000, 0.000000, 0.000000]
x[3,1]  [0.000000, 0.000000, 0.000000]
x[3,2]  [0.000000, 0.000000, 0.000000]
x[3,3]  [1.000000, 2.000000, 3.000000]
x[3,4]  [0.000000, 0.000000, 0.000000]
x[3,5]  [0.000000, 0.000000, 0.000000]
x[3,6]  [0.000000, 0.000000, 0.000000]
x[3,7]  [0.000000, 0.000000, 0.000000]
x[3,8]  [0.000000, 0.000000, 0.000000]
x[3,9]  [0.000000, 0.000000, 0.000000]
x[4,0]  [0.000000, 0.000000, 0.000000]
x[4,1]  [0.000000, 0.000000, 0.000000]
x[4,2]  [0.000000, 0.000000, 0.000000]
x[4,3]  [0.000000, 0.000000, 0.000000]
x[4,4]  [0.000000, 0.000000, 0.000000]
x[4,5]  [0.000000, 0.000000, 0.000000]
x[4,6]  [0.000000, 0.000000, 0.000000]
x[4,7]  [0.000000, 0.000000, 0.000000]
x[4,8]  [0.000000, 0.000000, 0.000000]
x[4,9]  [0.000000, 0.000000, 0.000000]
x[5,0]  [0.000000, 0.000000, 0.000000]
x[5,1]  [0.000000, 0.000000, 0.000000]
x[5,2]  [0.000000, 0.000000, 0.000000]
x[5,3]  [0.000000, 0.000000, 0.000000]
x[5,4]  [0.000000, 0.000000, 0.000000]
x[5,5]  [0.000000, 0.000000, 0.000000]
x[5,6]  [0.000000, 0.000000, 0.000000]
x[5,7]  [0.000000, 0.000000, 0.000000]
x[5,8]  [0.000000, 0.000000, 0.000000]
x[5,9]  [0.000000, 0.000000, 0.000000]
x[6,0]  [0.000000, 0.000000, 0.000000]
x[6,1]  [0.000000, 0.000000, 0.000000]
x[6,2]  [0.000000, 0.000000, 0.000000]
x[6,3]  [0.000000, 0.000000, 0.000000]
x[6,4]  [0.000000, 0.000000, 0.000000]
x[6,5]  [0.000000, 0.000000, 0.000000]
x[6,6]  [0.000000, 0.000000, 0.000000]
x[6,7]  [0.000000, 0.000000, 0.000000]
x[6,8]  [0.000000, 0.000000, 0.000000]
x[6,9]  [0.000000, 0.000000, 0.000000]
x[7,0]  [0.000000, 0.000000, 0.000000]
x[7,1]  [0.000000, 0.000000, 0.000000]
x[7,2]  [0.000000, 0.000000, 0.000000]
x[7,3]  [0.000000, 0.000000, 0.000000]
x[7,4]  [0.000000, 0.000000, 0.000000]
x[7,5]  [0.000000, 0.000000, 0.000000]
x[7,6]  [0.000000, 0.000000, 0.000000]
x[7,7]  [0.000000, 0.000000, 0.000000]
x[7,8]  [0.000000, 0.000000, 0.000000]
x[7,9]  [0.000000, 0.000000, 0.000000]
x[8,0]  [0.000000, 0.000000, 0.000000]
x[8,1]  [0.000000, 0.000000, 0.000000]
x[8,2]  [0.000000, 0.000000, 0.000000]
x[8,3]  [0.000000, 0.000000, 0.000000]
x[8,4]  [0.000000, 0.000000, 0.000000]
x[8,5]  [0.000000, 0.000000, 0.000000]
x[8,6]  [0.000000, 0.000000, 0.000000]
x[8,7]  [0.000000, 0.000000, 0.000000]
x[8,8]  [0.000000, 0.000000, 0.000000]
x[8,9]  [0.000000, 0.000000, 0.000000]
x[9,0]  [0.000000, 0.000000, 0.000000]
x[9,1]  [0.000000, 0.000000, 0.000000]
x[9,2]  [0.000000, 0.000000, 0.000000]
x[9,3]  [0.000000, 0.000000, 0.000000]
x[9,4]  [0.000000, 0.000000, 0.000000]
x[9,5]  [0.000000, 0.000000, 0.000000]
x[9,6]  [0.000000, 0.000000, 0.000000]
x[9,7]  [0.000000, 0.000000, 0.000000]
x[9,8]  [0.000000, 0.000000, 0.000000]
x[9,9]  [0.000000, 0.000000, 0.000000]
(10, 10)

import taichi as ti
ti.init()
x = ti.field(ti.f32)
snode = ti.root.pointer(ti.ij,(10,10))
snode.place(x)
# print(x.shape)

x[1,3] = 1.3
x[1,5] = 1.6
x[2,3] = 1.4
x[3,3] = 1.0

@ti.kernel
def test():
    for i,j in x:
        print('x[{},{}]={}'.format(i,j,x[i,j]))
        
test()

x[1,3]=1.300000
x[1,5]=1.600000
x[2,3]=1.400000
x[3,3]=1.000000
[Taichi] Starting on arch=arm64