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Diffstat (limited to 'docs/source/usage')
| -rw-r--r-- | docs/source/usage/operations/transformations/axisswap.rst | 39 | ||||
| -rw-r--r-- | docs/source/usage/operations/transformations/index.rst | 1 |
2 files changed, 40 insertions, 0 deletions
diff --git a/docs/source/usage/operations/transformations/axisswap.rst b/docs/source/usage/operations/transformations/axisswap.rst new file mode 100644 index 00000000..ddaad075 --- /dev/null +++ b/docs/source/usage/operations/transformations/axisswap.rst @@ -0,0 +1,39 @@ +.. _axisswap: + +================================================================================ +Axis swap +================================================================================ + +Change the order and sign of 2,3 or 4 axes. + ++--------------+---------------------------------------------------------------+ +| **Options** | ++--------------+---------------------------------------------------------------+ +| `+order` | Ordered comma-separated list of axis, e.g. `+order=2,1,3,4` | ++--------------+---------------------------------------------------------------+ + + +Each of the possible four axes are numbered with 1-4, such that the first input axis +is 1, the second is 2 and so on. The output ordering is controlled by a list of the +input axes re-ordered to the new mapping. + +Examples +################################################################################ + +Reversing the order of the axes:: + + +proj=axisswap +order=4,3,2,1 + +Swapping the first two axes (x and y):: + + +proj=axisswap +order=2,1,3,4 + +The direction, or sign, of an axis can be changed by adding a minus in +front of the axis-number:: + + +proj=axisswap +order=1,-2,3,4 + +It is only necessary to specify the axes that are affected by the swap +operation:: + + +proj=axisswap +order=2,1 diff --git a/docs/source/usage/operations/transformations/index.rst b/docs/source/usage/operations/transformations/index.rst index 8bf2a890..2966ed0d 100644 --- a/docs/source/usage/operations/transformations/index.rst +++ b/docs/source/usage/operations/transformations/index.rst @@ -7,6 +7,7 @@ Transformations .. toctree:: :maxdepth: 1 + axisswap cart helmert molodensky |