Differences

This shows you the differences between two versions of the page.

--- tools:matrix:start [2021/11/12 11:44] – [Logging Matrices] ursgraf
+++ tools:matrix:start [2021/11/14 17:15] – [Matrix Operations] ursgraf
@@ Line 3: / Line 3: @@
 <code cpp>
 Vector<3, double> v;
-v << 1.5, -2, 0;
 </code>
 The declaration could be simplified to
 <code cpp>
 Vector3<> v;
-v << 1.5, -2, 0;
 </code>
-as ''Vector3'' is a predefined type with three dimensions and the default element type is ''double''. A matrix of 3 times 3 with element type ''int'' could be defined as
+as ''Vector3'' is a predefined type with three dimensions and the default element type is ''double''. A ''Vector3'' is identical to the type ''Matrix<3,1,double>''. The vector could be initializer as follows
+<code cpp>
+v = {1.5, -2, 0}
+v << 1.5, -2, 0; // or with input operator
+Vector3 v{1,2,3}; // or directly upon declaration
+</code>
+A matrix of 3 times 3 with element type ''int'' could be defined as
 <code cpp>
 Matrix<3, 3, int> m;
@@ Line 63: / Line 67: @@
 -09-16 17:37:18:122    I:  [1 2]'
 -09-16 17:37:18:122    I:  [ [1]' [2]' ]'
+</code>
+===== Matrix Operations =====
+Some examples show basic matrix operations.
+<code cpp>
+Vector2 v1{1,2};
+Matrix<1,2> v2{3,4};
+log.info() << v1 * v2;            // will print [ [3 6]' [4 8]' ]
+log.info() << v2 * v1;            // will print [11]'
+Matrix<2,2,double> m1{1,1.5,-1,2};
+log.info() << v2 * m1;            // will print [ [9]' [5]' ]
+log.info() << v1.transpose() * m1;// will print [ [4]' [3]' ]
+auto x = v2 * m1;
+Vector2 v4 = x.transpose();
+log.info() << v4;                 // will print [9 5]'
 </code>