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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 | #!F-adobe-helvetica-medium-r-normal--18*
#!N
#!CDarkGreen #!N #!Rall774 Vector and Tensor
Data #!N #!EC #!N #!I0 #!N #!N #!I0 #!N #!F-adobe-times-bold-r-normal--18* #!F-adobe-times-bold-r-normal--18*
shape #!EF #!EF #!I50 #!N is used to change the thickness
of the glyph relative to its length. The default value for
#!F-adobe-times-bold-r-normal--18* shape #!EF is 1 (e.g., to make a glyph twice
as thick, set this parameter to twice the default value (i.e.,
to 2). #!N #!I0 #!N #!F-adobe-times-bold-r-normal--18* #!F-adobe-times-bold-r-normal--18* scale #!EF #!EF #!I50
#!N sets the scale factor for the size of the glyphs
relative to the default glyph. #!N #!I0 #!N #!F-adobe-times-bold-r-normal--18* #!F-adobe-times-bold-r-normal--18* ratio
#!EF #!EF #!I50 #!N determines which data values are displayed. To
display only those values larger than 0.5 * #!F-adobe-times-bold-r-normal--18* max #!EF
, set this parameter to 0.5. The default value is 0.0.
#!N #!I0 #!N #!F-adobe-times-bold-r-normal--18* #!F-adobe-times-bold-r-normal--18* min #!EF and #!F-adobe-times-bold-r-normal--18* max #!EF
#!EF #!I50 #!N are the data values used to set glyph
sizes. #!N #!N For #!F-adobe-times-medium-i-normal--18* 3x3 symmetric tensor data #!EF three
arrows are drawn, representing the eigenvectors of the matrix. For #!F-adobe-times-medium-i-normal--18*
2x2 symmetric tensor data #!EF two arrows are drawn, representing the
eigenvectors of the matrix. For #!F-adobe-times-medium-i-normal--18* vector data #!EF , one
arrow is drawn, representing the magnitude of the data. The default
value of #!F-adobe-times-bold-r-normal--18* min #!EF is 0 (zero), and the length
of the glyphs is always directly proportional to the magnitude of
the data (or the magnitude of the eigenvector). If you set
#!F-adobe-times-bold-r-normal--18* min #!EF to a value greater than zero, all data
with a magnitude smaller than #!F-adobe-times-bold-r-normal--18* min #!EF are represented by
a dot if #!F-adobe-times-bold-r-normal--18* type #!EF is "needle," and by a
small sphere otherwise. This can be useful to weed out small
and perhaps noisy vectors. You can also set #!F-adobe-times-bold-r-normal--18* ratio #!EF
to a value larger than zero; in that case, all data
with a magnitude smaller than #!F-adobe-times-bold-r-normal--18* ratio #!EF * #!F-adobe-times-bold-r-normal--18* max
#!EF is shown by a small sphere or dot. This allows
you, for example, to set #!F-adobe-times-bold-r-normal--18* ratio #!EF = 0.5 to
see only those vectors with a magnitude greater than half of
#!F-adobe-times-bold-r-normal--18* max #!EF . #!N #!N If you have vector data
and want to show all the vectors as having the same
length, you can use the #!F-adobe-times-bold-r-normal--18* norm #!EF function in the
Compute module to normalize all the vectors to unit magnitude before
passing them to AutoGlyph. #!I0 #!N #!N #!N #!N You can
also use a field as the input for #!F-adobe-times-bold-r-normal--18* min #!EF
and #!F-adobe-times-bold-r-normal--18* max #!EF , in which case the statistics of
that field are used instead. If the input #!F-adobe-times-bold-r-normal--18* data #!EF
is changing from frame to frame, and you want to keep
the glyph sizes consistent from frame to frame, you can use
the entire field or series as the input for #!F-adobe-times-bold-r-normal--18* min
#!EF and #!F-adobe-times-bold-r-normal--18* max #!EF . #!N #!N Note that if
you set #!F-adobe-times-bold-r-normal--18* min #!EF and #!F-adobe-times-bold-r-normal--18* max #!EF , and
there are data values far outside that range, then it is
possible to get very large glyphs. This is because #!F-adobe-times-bold-r-normal--18* max
#!EF is used to set the size scaling for the glyphs.
Data values much larger in absolute value than #!F-adobe-times-bold-r-normal--18* max #!EF
have proportionally larger-sized glyphs. #!N #!N #!N #!F-adobe-times-medium-i-normal--18* Next Topic #!EF
#!N #!N #!Lall775,dxall776 h User-supplied and Annotation Glyphs #!EL #!N #!F-adobe-times-medium-i-normal--18* #!N
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