Linear algebra sparse arrays sparsearray data format

教程 2 步，在同一个会话中按顺序运行。每一步都在引擎上执行过，下面的输出就是它实际产生的。

第 1 步

sp = SparseArray[{{1, 1} -> a11, {1, 3} -> a13, {2, 1} -> a21,
	{2, 4} -> a24, {3, 2} -> a32, {3, 3} -> a33}, {3, 4}];
sp//MatrixForm

输出

MatrixForm[SparseArray[Automatic, {3, 4}, 0, {1, {{0, 2, 4, 6}, {{1}, {3}, {1}, {4}, {2}, {3}}}, {a11, a13, a21, a24, a32, a33}}]]

第 2 步

sp//InputForm

输出

InputForm[SparseArray[Automatic, {3, 4}, 0, {1, {{0, 2, 4, 6}, {{1}, {3}, {1}, {4}, {2}, {3}}}, {a11, a13, a21, a24, a32, a33}}]]

用到的函数