.. highlightlang:: us

.. index:: LayerGetSelectedDatasets

.. _layergetselecteddatasets:

LayerGetSelectedDatasets
========================

.. us.tag  LayerGetSelectedDatasets NOTREADYENGLISH LayerGet

:ref:`LayerGetSelectedDatasets` returns the handles of all selected datasets.

.. function::  hvData = LayerGetSelectedDatasets(hLayer)

.. us.return

**Return Value**

*hvData* is a vector with dataset handle or the first element is 0 if no dataset
was selected.

.. us.params

**Parameters**

.. uparam:: hLayer

   Identifies the layer.

.. us.example

**Example**

In the following example all selected datasets of the selected diagram will be
normed to "1"

::

   hDoc = AppGetActiveDocument();
   if (hDoc == 0) {
       return FALSE;   // No doument active
   }
   hPage = AppGetActivePage();
   if (hPage == 0) {
       return FALSE;   // No Page active
   }
   hLayer = PageGetSelectedLayer(hPage);
   if (hPage == 0) {
       return FALSE;    // No diagram selected
   }
   hvData = LayerGetSelectedDatasets(hLayer) {
   if (hvData[1] == 0) {
       return FALSE;     // No dataset selected
   }
   for (i in hvData) {
       if (ObjGetClass(i) == "OBJ_XYZDATASET") {
           continue;
       }
       rmXY = XYGetData(i);
       rmXY[;2] = rmXY[;2] / max(rmXY[;2]); // Norm to "1"
       XYSetData(i, rmXY[;1], rmXY[;2]);
   }

.. seealso::
   :ref:`overview-diagrams`,
   :ref:`AppGetActiveDocument`,
   :ref:`AppGetActivePage`,
   :ref:`LayerGetSelectedDataset`,
   :ref:`XYGetData`,
   :ref:`XYSetData`,
   :ref:`max`,
   :ref:`LayerCreate`

:sub:`id-808367`