Postproc crashes when reading 2D result with partial profile cut

[ghorwin]

Simulation geometry 2D:

• selecting a profile cut that spans only one row gives a 3D data format
• the extractor 2Dfrom3D (time-cut of profile) is being used

Problem:

• when cut is being made over entire width of construction, x-coordinates of selected elements also span all columns, thus for all selected elements and their individual column indexes a coordinate exist.

*But*: when only part of the line is selected, i.e. only a few elements in that line, than the x-coordinate vector will only have as many elements. When associating the corresponding value the column-index of some selected values will be out of range and cause an access violation.

Options:

• either change detection of data format to use whole geometry (i.e. any 2D geometry would result in a 4D file) and consequently profile cuts would always require a value cut at exactly this location/coordinate (also requires error handling when trying to plot a 2D color map from such a profile output)

• fix 2Dfrom3D Extractor to recognize this situation and do an additional reverse lookup in order to avoid access violation.

[ghorwin]

Related to ticket #146. Fixed.