Euhedral Commands

Reading data

readins insfile
readhkl hklfile
pg set point group

Filter

filter start filter routine
angdistmax set angular distribution
intmin set minimal intensity
nhklmin set minimal redundancy
thetamin set minimal theta

Build/Modify crystal description

addface add face (x y z d)
addfacehkl add face (h k l d)
addfaceperp face1 face2 dist
addfacesum face numbers
bestblock search best block
bestcube search best cube
bestneedle search best needle
bestplate search best plate
bestsphere search best dodecahedron
buildblock select one of 5 simple blocks
buildcube select one of 5 simple cubes
buildneedle select one of 13 simple needles
buildplate selectr one of 13 simple plates
buildsphere select one of 7 dodecahedron models
deleteface delete faces
face set face parameters
replaceface replace faces

Options

absg set correction method and absorption coefficient
abst set correction method and absorption coefficient
angmin minimum angle between rotaxes
angmax set maximum tilt angle
centric centric shape on/off
correction ABST/ABSG
extreme set initial refinement shift
highindex set high index
improve set refinement improvement threshold
initangle set initial angle for crystrotsimplex
initdistance set initial distance
lambda set wavelength in Å
phi set phi start, stop and delta
tol set refinement tolerance
weight set weights for R2 calculation

Refinement commands

amoeba amoeba distance
crystrot crystal rotations
crystrot1 single rotation
crystrotface single rotation
crystrothkl single rotation
crystrotsimplex simplex crystal rotations
distance refine face distances
tilt refine face tilt
volume refine volume

Graphics

colour set various colours
croty continuous rotation
legenda set the width of the legenda window
mode cone/stereographic/ajmd/z
onerot rotate picture
partialrot rotate picture
plotaxes do/donot plot crystal axes
plotcorner do/donot plot corners
plotlab do/donot plot cartesian axes
pointsize point size in pixels
posx window position
posy window position
size window size
vertical put view direction vertical
viewdir view along hkl direction
viewpartial set rotation angle for partialrot
viewperp view perpendicular to face
viewrot rotate view vector
viewspeed rotation speed
viewxyz view along cartesian vector

Misc

copy create new ins file
edit edit ins file
exit end program
hkl single reflection information
plot use platon to display shape
reduce reduce face indices
status program status
test consistency test
workfile set workfile name (subfile)
writehkl write (filtered) hkl file


You may also visit the explanation of internal commands: aliases, flowcontrol etc. top

Reading data

readins

The command readins filename reads name.ins in PLATON format. For running EUHEDRAL, name.ins must at least contain a CELL line and the absorption coefficient, given by an ABST or ABSG line. If a crystal description is available, it should be given with the corresponding FACE cards. If no crystal description is available, it can be generated with the EUHEDRAL commands buildblock, buildcube, buildneedle, buildplate, buildsphere, bestblock, bestcube, bestneedle, bestplate, or bestsphere.
If you provide an orientation matrix name.rmat it will be used (see coordinate systems).
It is necessary to run readins at every program start of EUHEDRAL.

readhkl

The command readhkl filename reads name.hkl in SHELXL-HKLF4 format. The reflection file must contain the direction cosines, as described in the SHELX76 manual. Please be aware that the reflection indices and direction cosines must correspond to the CELL line of the ins file. If this is not the case, you can use PLATON for a transformation of the reflection file, before you use EUHEDRAL.
Note: EUHEDRAL only uses the default settings of 32 point groups, see pg.
Reflections with intensities lower than 3.0*sigma are ignored by readhkl (so negative intensitities are also ignored).
Once the EUHEDRAL command filter had been used and the subfile.hkl is present, it is not necessary to run readhkl at every program start.

pg

With the command pg pointgroup the point group symmetry is set. This information is used for the determination of the redundancy in the filter routine, and for the calculation of R values.
Only the 32 standard settings of the point groups are known to EUHEDRAL. (Note: You can always apply a transformation matrix to the reflection indices and the corresponding direction cosines by using the program PLATON before. Example: reflections in the non-standard point group 2mm must be transformed with PLATON into the standard point group mm2).

The available point groups are: 
  1  -1
  2   m  2/m
222 mm2  mmm
  4  -4  4/m  422   4mm  -42m  -4m2   4/mmm
  3  -3  312  321   31m   3m1  -31m    -3m1
  6  -6  6/m  622   6mm  -6m2  -62m   6/mmm
 R3 R-3  R32  R3m  R-3m
 23  m3  432 -43m   m3m
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Filter

filter

The command filter is used to generate a\ subset of the original reflection file. This subset can then be used for the refinements with EUHEDRAL. With the graphical display you can check the distribution of the reflections (incoming and outgoing beam) in reciprocal space. Filter options
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Build/Modify crystal description

addface

Syntax: addface x y z distance
Add a new face to name.ins, perpendicular to a cartesian xyz direction (see coordinate systems). Interesting xyz directions can be found using the command test.

addfacehkl

Syntax: addfacehkl h k l distance
Add a new face to name.ins by supplying hkl indices.

addfaceperp

Syntax: addfaceperp i j distance
Add a new face to name.ins, perpendicular to two existing faces i and j.

addfacesum

Syntax: addfacesum i j ....
Add a new face to name.ins as a sum of already existing faces.
Enter a list of faces (at least 2). The facenormals of the contributing faces are summed. The distance is the average of the contributing faces. See also replaceface.

bestblock

Syntax: bestblock tolerance distance refinementtype
The command bestblock refines five different blocks in order to find a suitable starting model for the EUHEDRAL refinements. All refined models are stored in the files model1.ins to model5.ins, so that they can be read later. refinementtype is a string build of the characters v, a and d (for volume, amoeba and distance). For example refinementtype vd will first perform a volume refinement followed by a distance refinement.
The best model overwrites the current ins file.
To speed up this time consuming command, it may be advisable to set the tolerance to a value of 0.1, using the EUHEDRAL command tol.

bestcube

Syntax: bestcube tolerance distance refinementtype
The command bestcube refines five different cubes in order to find a suitable starting model for the EUHEDRAL refinements. All refined models are stored in the files model1.ins to model5.ins, so that they can be read later. refinementtype is a string build of the characters v, a and d (for volume, amoeba and distance). For example refinementtype vd will first perform a volume refinement followed by a distance refinement.
The best model overwrites the current ins file.
To speed up this time consuming command, it may be advisable to set the tolerance to a value of 0.1, using the EUHEDRAL command tol.

bestneedle

Syntax: bestneedle tolerance distance refinementtype
The command bestneedle refines a needle in 13 different orientations in order to find a suitable starting model for the EUHEDRAL refinements. All refined models are stored in the files model1.ins to model13.ins, so that they can be read later. refinementtype is a string build of the characters v, a and d (for volume, amoeba and distance). For example refinementtype vd will first perform a volume refinement followed by a distance refinement.
The best model overwrites the current ins file.
To speed up this time consuming command, it may be advisable to set the tolerance to a value of 0.1, using the EUHEDRAL command tol.

bestplate

Syntax: bestplate tolerance distance refinementtype
The command bestplate refines a plate in 13 different orientations in order to find a suitable starting model for the EUHEDRAL refinements. All refined models are stored in the files model1.ins to model13.ins, so that they can be read later. refinementtype is a string build of the characters v, a and d (for volume, amoeba and distance). For example refinementtype vd will first perform a volume refinement followed by a distance refinement.
The best model overwrites the current ins file.
To speed up this time consuming command, it may be advisable to set the tolerance to a value of 0.1, using the EUHEDRAL command tol.

bestsphere

Syntax: bestsphere tolerance distance refinementtype
The command bestsphere refines seven different (rhombohedral and pentagonal) dodecahedrons in order to find a suitable starting model for the EUHEDRAL refinements. All refined models are stored in the files model1.ins to model7.ins, so that they can be read later. refinementtype is a string build of the characters v, a and d (for volume, amoeba and distance). For example refinementtype vd will first perform a volume refinement followed by a distance refinement.
The best model overwrites the current ins file.
To speed up this time consuming command, it may be advisable to set the tolerance to a value of 0.1, using the EUHEDRAL command tol.

buildblock

Syntax: buildblock distance type
The command buildblock generates a simple block, which can then be refined with crystrot and the other EUHEDRAL commands. A distance value for the crystal faces (crystal size) must be supplied. The block is build with 6 faces, all with the same distance. The face normals are along reciprocal axes and reciprocal diagonals. There are 5 different settings of the initial block:
face   1   2   3   4   5
h k l h k l h k l h k l h k l
1 1 0 0 1 0 0 1 0 1 1 1 0 0 1 1
2 -1 0 0 -1 0 0 -1 0 -1 -1 -1 0 0 -1 -1
3 0 1 0 0 1 1 0 1 0 -1 1 0 1 0 1
4 0 -1 0 0 -1 -1 0 -1 0 0 1 -1 -1 0 -1
5 0 0 1 0 -1 1 -1 0 1 0 0 1 1 1 0
6 0 0 -1 0 1 -1 1 0 -1 0 0 -1 -1 -1 0
buildblock will overwrite the FACE cards of the current ins file.

buildcube

Syntax: buildcube distance type
The command buildcube generates a simple cube, which can then be refined with crystrot and the other EUHEDRAL commands. A distance value for the crystal faces (crystal size) must be supplied. There are 5 different settings of the initial cube
face   1   2   3   4   5
x y z x y z x y z x y z x y z
1 1 0 0 1 1 0 1 0 1 0 1 1 1 1 1
2 -1 0 0 -1 -1 0 -1 0 -1 0 -1 -1 -1 -1 -1
3 0 1 0 1 -1 0 0 1 0 0 1 1 1 -1 0
4 0 -1 0 -1 1 0 0 -1 0 0 -1 -1 -1 1 0
5 0 0 1 0 0 1 1 0 -1 0 1 -1 -1 -1 1
6 0 0 -1 0 0 -1 -1 0 1 0 -1 1 1 1 -1
These face normals (defined in the laboratory system) are converted into hkl indices. buildcube will overwrite the FACE cards of the current ins file.

buildneedle

Syntax: buildneedle distance type
The command buildneedle generates a simple needle, which can then be refined with crystrot and the other EUHEDRAL commands. An distance value for the crystal faces (crystal size) must be supplied. The needle consist of 2 faces (at distance of distance), and 8 faces perpendicular to the first two (at a distance of 0.2*distance).
face x y z distance
1 0 0 1 distance
2 0 0 -1 distance
3 -1 1 0 0.2*distance
4 1 -1 0 0.2*distance
5 0 1 0 0.2*distance
6 0 -1 0 0.2*distance
7 1 1 0 0.2*distance
8 -1 -1 0 0.2*distance
9 1 0 0 0.2*distance
10 -1 0 0 0.2*distance
These face normals are defined in the laboratory system. The needle axis (0,0,1) will be aligned to one of 13 different orientations:
1 2 3 4 5 6 7 8 9 10 11 12 13
a* b* c* a*+b* a*-b* b*+c* b*-c* c*+a* c*-a* a*+b*+c* a*+b*-c* a*-b*+c* a*-b*-c*
and the resulting normals are converted to hkl indices.
buildneedle will overwrite the FACE cards of the current ins file.

buildplate

Syntax: buildplate distance type
The command buildplate generates a simple plate, which can then be refined with crystrot and the other EUHEDRAL commands. A distance value for the crystal faces (crystal size) must be supplied. The plate consist of 2 faces (at a distance of 0.2*distance), and 8 faces perpendicular to the first two (at a distance of distance).
face x y z distance
1 0 0 1 0.2*distance
2 0 0 -1 0.2*distance
3 -1 1 0 distance
4 1 -1 0 distance
5 0 1 0 distance
6 0 -1 0 distance
7 1 1 0 distance
8 -1 -1 0 distance
9 1 0 0 distance
10 -1 0 0 distance
These face normals are defined in the laboratory system. The plate axis (0,0,1) will be aligned to one of 13 different orientations:
1 2 3 4 5 6 7 8 9 10 11 12 13
a* b* c* a*+ b* a*-b* b*+c* b*-c* c*+a* c*-a* a*+b*+c* a*+b*-c* a*-b*+c* a*-b*-c*
and the resulting normals are converted to hkl indices.
buildplate will overwrite the FACE cards of the current ins file.

buildsphere

Syntax: buildsphere distance type
The command buildsphere generates a simple dodecahedron, which can then be refined with crystrot and the other EUHEDRAL commands. An distance value for the crystal faces (crystal size) must be supplied. One of seven different dodecahedrons (rhombohedral and pentagonal) can be chosen.
face   1   2   3   4   5   6   7
x y z x y z x y z x y z x y z x y z x y z
1 1 1 0 2 1 0 1 2 0 3 1 0 1 3 0 3 2 0 2 3 0
2 -1 -1 0 -2 -1 0 -1 -2 0 -3 -1 0 -1 -3 0 -3 -2 0 -2 -3 0
3 1 0 1 1 0 2 2 0 1 1 0 3 3 0 1 2 0 3 3 0 2
4 -1 0 -1 -1 0 -2 -2 0 -1 -1 0 -3 -3 0 -1 -2 0 -3 -3 0 -2
5 0 1 1 0 2 1 0 1 2 0 3 1 0 1 3 0 3 2 0 2 3
6 0 -1 -1 0 -2 -1 0 -1 -2 0 -3 -1 0 -1 -3 0 -3 -2 0 -2 -3
7 -1 1 0 -2 1 0 -1 2 0 -3 1 0 -1 3 0 -3 2 0 -2 3 0
8 1 -1 0 2 -1 0 1 -2 0 3 -1 0 1 -3 0 3 -2 0 2 -3 0
9 -1 0 1 -1 0 2 -2 0 1 -1 0 3 -3 0 1 -2 0 3 -3 0 2
10 1 0 -1 1 0 -2 2 0 -1 1 0 -3 3 0 -1 2 0 -3 3 0 -2
11 0 -1 1 0 -2 1 0 -1 2 0 -3 1 0 -1 3 0 -3 2 0 -2 3
12 0 1 -1 0 2 -1 0 1 -2 0 3 -1 0 1 -3 0 3 -2 0 2 -3
These face normals (defined in the laboratory system) are converted into hkl indices. buildsphere will overwrite the FACE cards of the current ins file.

deleteface

Syntax: deleteface i ....
Enter a list of faces (at least 1). These faces will be removed from name.ins (if the resulting model remains valid). Please note that the labelling of the faces may change after deleting one or several faces.

face

Syntax: face n h k l d
You can change the face indices h k l and/or distance d of a single face n which is already defined in name.ins. See also edit to edit name.ins.

replaceface

Syntax: replaceface i j ....
replace faces
Enter a list of faces (at least 2). The sum of these faces will be added to the *ins file, and the contributing faces will be removed from the *ins file. Please note that the labelling of the faces will change after replacing several faces.
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Options

absg

Syntax: absg f
Set the absorption correction procedure to ABSG in PLATON. Set the absorption coefficient to f.
By default the correction procedure and absorption coefficient are taken from the ins file. Please consult the PLATON manual for a detailed description of the differences between ABST and ABSG.

abst

Syntax: abst f
Set the absorption correction procedure to ABST in PLATON. Set the absorption coefficient to f.
By default the correction procedure and absorption coefficient are taken from the ins file. Please consult the PLATON manual for a detailed description of the differences between ABST and ABSG.

angmin

Syntax: angmin angle
See crystrot.

angmax

Syntax: angmax angle
See tilt.

centric

Syntax: centric on/off
With the option centric on in distance refinement, faces related by an inversion center are refined together. With the option centric off, these faces are refined separately. This option has no influence on the command filter (point group symmetry) and on the other refinement commands (volume, crystrot, tilt, etc.). By default the option centric is set on, independent of the supplied point group symmetry.

correction

Syntax: correction ABST/ABSG
The absorption correction procedure ABST or ABSG in PLATON is chosen. By default the selection is taken from the ins file. Please consult the PLATON manual for a detailed description of the differences between ABST and ABSG.

deltatilt

Syntax: deltatilt n
Default: deltatilt 1
tilt refinement changes the tilt of individual faces with respect to the other faces. These tilt changes are performed by changing the faceindices, one by one. To avoid large tilt angles (especially for low face index numbers), the indices are first multiplied by a constant. Then the faceindices are changed from the index-n to index+n.
See also highindex

extreme

Syntax: extreme f
Sets the initial refinement shifts for volume and distance refinements. With a rough starting model this value should be 1.0. With a good starting model, for example at the end of EUHEDRAL refinements, the value can be lowered to speed up the refinements.

highindex

Syntax: highindex n
Default: highindex 5
tilt refinement changes the tilt of individual faces with respect to the other faces. These tilt changes are performed by changing the faceindices, one by one. To avoid large tilt angles (especially for low face index numbers), the indices are first multiplied by a constant. None of the resulting indices will be larger than n.
Example: highindex 10 See tilt. The opposite operation is called reduce.

See also deltatilt

improve

Syntax: improve f
Default: improve 0.001
Sets the refinement improvement threshold.
threshold = (0.1*w1 + 0.5*w2) * f/1.5
A refinement is considered to be improved if the final R2 value is lowered by a value greater than threshold. Used with volume and distance refinements.

initangle

Syntax: initangle a
Default: initangle 90
Set the initial angle to a degrees. This angle is used by crystrotsimplex.

initdistance

Syntax: initdistance distance
Set initial distance for adding faces using the commands addface, addfacehkl, addfaceperp, addfacesum, bestcube, bestneedle, bestplate, bestsphere, buildcube or buildsphere. Default = 0.07.

lambda

Syntax: lambda wavelength
Set the wavelength in Å
By default the wavelength is taken from the ins file.

phi

Syntax: phi start stop delta
Set the default values for a crystrot refinement. See crystrot, crystrot1, crystrotface and crystrothkl.

tol

Syntax: tol f
Sets the tolerance, when the refinement stops. Lower values give more accurate results. Default = 0.01

weight

Syntax: weight w1 w2
Sets sets the weights w1 and w2 for the R2 calculation.
All EUHEDRAL refinements of the crystal shape are based on this R2.

R2 = w1*Rint + w2 * Rpsi

Rint = ∑[abs(int - intmean)] / ∑(int) (G.M. Sheldrick: SHELXL)

Rpsi = (1/n) * ∑[(intmax/intmin)-1] (W. Herrendorf: HABITUS)

Defaults: w1=10.0 w2=0.1
With these defaults R2 is approximately 10 times the SHELX Rint.
For a pure SHELX Rint set w1=1.0 and w2=0.0

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Refinement commands

amoeba

All distances of the different crystal faces are refined in one refinement cycle (simplex algorithm). In contrast to the volume refinement, the ratio of the distances is allowed to change.
Use distance for a one-by-one refinement of the face distances.

crystrot

Syntax: crystrot phistart phistop delphi angmin
Rotate the complete crystal with respect to 13 rotation axes: 011 101 110 011 101 110 111 111 111 100 010 001 111 (definition in cartesian system). For each axis, the crystal is rotated from phistart to phistop with delphi steps. A new orientation is ignored if it is within angmin degrees of an already generated one. The crystal shape is held constant during the refinement. Please be aware that the indices of the faces may become relatively high numbers, which you may want to reduce. Use crystrotsimplex for a simplex refinement of the crystal orientation.

crystrot1

Syntax: crystrot1 Rx Ry Rz phistart phistop delphi angmin
Rotate the complete crystal with respect to a single rotation axis. The axis is specified with the cartesian vector Rx Ry Rz. The crystal is rotated from phistart to phistop with delphi steps. A new orientation is ignored if it is within angmin degrees of an already generated one. The crystal shape is held constant during the refinement. Please be aware that the indices of the faces may get relatively big, which you may want to reduce.

crystrotface

Syntax: crystrotface facenumber phistart phistop delphi angmin
Rotate the complete crystal with respect to a face normal. The rotation axis is specified by facenumber. The crystal is rotated from phistart to phistop with delphi steps. A new orientation is ignored if it is within angmin degrees of an already generated one. The crystal shape is held constant during the refinement. Please be aware that the indices of the faces may get relatively big, which you may want to reduce.

crystrothkl

Syntax: crystrothkl h k l phistart phistop delphi angmin
Rotate the complete crystal with respect to a reciprocal axis (see coordinate systems). The rotation axis is specified by the indices h k l. The crystal is rotated from phistart to phistop with delphi steps. A new orientation is ignored if it is within angmin degrees of an already generated one. The crystal shape is held constant during the refinement. Please be aware that the indices of the faces may get relatively big, which you may want to reduce.

crystrotsimplex

Syntax: crystrotsimplex angle
Rotate the complete crystal with respect to the 3 cartesian axes (100, 010 and 001). The initial angles along the 3 axes are set with the value of angle. The crystal shape is held constant during the refinement. Please be aware that the indices of the faces may get relatively big, which you may want to reduce. Use crystrot for a brute force refinement of the crystal orientation.

distance

The distances of the faces are refined separately (parabolic refinement). If the parameter centric is set on (default), faces related by an inversion center are refined together, independent of the point group.
The refinement stops if the improvement in R2 is smaller than the threshold set by improve.
Faces are automatically removed by EUHEDRAL if they don't intersect with the rest of the crystal. If this results in a lower R2 value, the corresponding face is permanently removed.
Use amoeba for a simplex refinement of the face distances.

tilt

Syntax: tilt highindex angmax face1 face2 ....
With the command tilt one or all faces are tilted with respect to the rest of the crystal shape. Faces are automatically removed by EUHEDRAL if they don't intersect with the rest of the crystal. If this results in a lower R2 value, the corresponding face is permanently removed.
After using tilt you may want to use reduce to obtain nicer face indices.

volume

The distances of all faces are refined together. The refinement stops if the improvement in R2 is smaller than the threshold set by improve.
This command can also be used as a test, whether the given crystal shape is reasonable.
If the refined volume factor is close to zero, the absorption coefficient might be wrong, or the crystal orientation is in error. In the latter case you could try the command crystrot.
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Graphics

colour

Syntax: colour item value
Set the colours for the graphical display.
item default description
axesbg green4 hidden coordinate axes
axesfg green1 visible coordinate axes
bg grey30 background
circle grey40 circles in the filter windows
cosi green incoming beam in filter windows
coso magenta outgoing beam in filter windows
facesbg brown hidden crystal face edges
facesfg yellow visible crystal face edges
fg white remaining items (f.e. edge numbers)
hot yellow hot legenda text
labelbg orange hidden crystal face labels
facesfg yellow visible crystal face labels
legenda white normal legenda text
main darkgoldenrod background main window

croty

Continuous rotation of the picture of the crystal shape. You have to interrupt (control-c) the program to stop this rotation.

legenda

Syntax: legenda n
Default: legenda 140
Set the width of the legenda window to n.

mode

Syntax: mode cone/stereographic/ajmd/z
The option mode is active during the filter procedure. The incoming and outgoing beam is plotted to allow you to judge, whether the complete crystal is covered by the selected subset. Different projections for the plot are possible.

onerot

Rotate the picture of the crystal shape 360 degrees.
Related command: partialrot

partialrot

Partially rotate the picture of the crystal shape. The rotation angle is set with viewpartial.
Related command: onerot

plotaxes

Syntax: plotaxes on/off
With plotaxes on or plotaxes off you can decide, whether the crystal axes are plotted in the picture of the crystal shape.

plotcorner

Syntax: plotcorner on/off
With plotcorner on or plotcorner off you can decide, whether the labels of the corners are plotted in the picture of the crystal shape. Default is plotcorner off.

plotlab

Syntax: plotlab on/off
With plotlab on or plotlab off you can decide, whether the cartesian axes (diffractometer system) are plotted in the picture of the crystal shape.
See coordinate systems.

pointsize

Syntax: pointsize n
With the command pointsize you can set the size (in pixels) of the points, which are used for displaying the incoming and outgoing beam during the filter procedure. Default = 3.

posx

Syntax: posx n
With the command posx you can set the x position (in pixels) of the graphical window, which is used for filter, and the picture of the crystal shape. Zero = Left side of the screen.

posy

Syntax: posy n
With the command posy you can set the y position (in pixels) of the graphical window, which is used for filter, and the picture of the crystal shape. Zero = Bottom side of the screen.

size

Syntax: size i j
With the command size you can set the absolute size (in pixels) of the graphical window, which is used for filter, and the picture of the crystal shape. Defaults to approximately 1/3 of the screen height.

vertical

Syntax: vertical on/off
The option vertical can be set on or off. With vertical off the picture of the crystal is displayed with a view along the cartesian z axis. With vertical on (default) the cartesian z axis is pointing upwards, simulating a Nonius KappaCCD microscope view.
See coordinate systems.

viewdir

Syntax: viewdir h k l
view along hkl direction (see coordinate systems).
(And remember option vertical).

viewpartial

Syntax: viewpartial angle
Set the angle for partialrot. Default value is 20°.

viewperp

Syntax: viewperp i
view perpendicular to face with facenumer i (and remember vertical).

viewrot

Syntax: viewrot angle
rotate view vector along the vertical screen axis.

viewspeed

Syntax: viewspeed speed
Rotation speed (degrees/second) for rotating the picture of the crystal in the graphical display. The default value = 30.
Related commands: onerot, partialrot

viewxyz

Syntax: viewxyz x y z
View along a cartesian vector (see coordinate systems).
(and remember option vertical).
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Misc

copy

Syntax: copy name
With the command copy, a new ins file is created, and reread. Usefull to play around with a model without losing the original data.

edit

With the command edit, you can edit the ins file, for example to add or remove crystal faces. When you use edit from within EUHEDRAL, all parameters are adapted automatically. If you edit the ins file with an external editor, you must explicitely use the EUHEDRAL command readins.
The command edit makes use of the system editor of the UNIX shell. With the UNIX command printenv you can check, which system editor is set on your system. Please consult the manual of your UNIX shell, if you wish to set a different system editor. If no editor is specified, vi will be used.
Please note that when using the GUI, the editor has to be started in its own window (e.g. emacs, nedit, xterm -e vi).
See also face to change parameters for a single face.

exit

end program

hkl

Syntax: hkl h k l
Display reflection information. Only for debugging purposes.

plot

The option XTAL of the PLATON program is used to display the crystal shape. You can rotate the crystal to obtain a better view. It is possible to write postscript or hpgl files. The PLATON options to change the crystal description should not be used for EUHEDRAL. Please use the edit command of EUHEDRAL instead.

reduce

If possible, a reduction of the face indices is performed. For example, the face 222 will be transformed into 111. This option is especially useful after a refinement of tilt or crystrot.

status

With the command status you can check, which parameters are currently set in EUHEDRAL.

test

The command test checks the consistancy of your description of the crystal shape. It also displays the surface areas of the different faces and the angles between them. Maybe you wish to remove faces with only a small surface. For this you can use the EUHEDRAL commands edit or deleteface.

workfile

Syntax: workfile name
The default names of the workfiles for euhedral are subfile.*. If you want to change the name you can use the command workfile.

writehkl

Syntax: writehkl x y z
write (filtered) hkl file. (This command is used internally by EUHEDRAL and normally not invoked by the user).
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Go to EUHEDRAL introduction.