merge grains along special grain boundaries
Whenever two grains share a grain boundary that is in the list gB both grains are merged and the common grain boundary is removed. All the properties of the unmerged grains are removed in the merged grains, since there is no common convention for a mean. In case of merging allong small angle grain boundaries one can force MTEX to compute a new meanOrientation using the option calcMeanOrientation.
Syntax
[grainsMerged,parentId] = merge(grains,gB)% compute new meanOrientations for the grains
[grainsMerged,parentId] = merge(grains,gB,'calcMeanOrientation')[grainsMerged,parentId] = merge(grains,M)[grainsMerged,parentId] = merge(grains,tpList)% merge by a list of pairs of grainIds
[grainsMerged,parentId] = merge(grains,gid)% merge grains with small misorientation angle
[grainsMerged,parentId] = merge(grains,'threshold',delta)% merge all inclusions with a maximum pixel size
[grainsMerged,parentId] = merge(grains,'inclusions','maxSize',5)Input
| grains | grain2d |
| boundary | grainBoundary |
| M | merge matrix M(i,j)==1 indicates the grains to be merged |
| tpList | triplePointList |
| gid | n x 2 list of grainIds |
Output
| grainsMerged | grain2d |
| parentId | a list of the same size as grains containing the ids of the merged grains |
Options
| threshold | maximum misorientation angle to be merged as similar |
| maxSize | maximum number of pixels to be merged as an inclusion |
Example
mtexdata small
grains = smooth(calcGrains(ebsd))ebsd = EBSD
Phase Orientations Mineral Color Symmetry Crystal reference frame
0 1197 (32%) notIndexed
1 1952 (52%) Forsterite LightSkyBlue mmm
2 290 (7.8%) Enstatite DarkSeaGreen mmm
3 282 (7.6%) Diopside Goldenrod 12/m1 X||a*, Y||b*, Z||c
Properties: bands, bc, bs, error, mad
Scan unit : um
X x Y x Z : [33000 36000] x [4500 7500] x [0 0]
Normal vector: (0,0,1)
grains = grain2d
Phase Grains Pixels Mineral Symmetry Crystal reference frame
0 292 1197 notIndexed
1 50 1952 Forsterite mmm
2 61 290 Enstatite mmm
3 62 282 Diopside 12/m1 X||a*, Y||b*, Z||c
boundary segments: 3013 (124006 µm)
inner boundary segments: 0 (0 µm)
triple points: 187
Properties: meanRotation, GOS