Hi Nicolas !
The positions in object 1 must be seen as your "x" - data
The data in object 4 is then your "y"-data
As you got 4 positions, there should be 3 connections between them:
object 1 class array type float rank 1 shape 1 items 4 data follows
0.
0.25
0.5
0.75
object 2 class array type int rank 1 shape 2 items 3 data follows
0 1
1 2
2 3
attribute "element type" string "lines"
attribute "ref" string "positions"
object 4 class array type float rank 0 items 4 data follows
0.
0.25
0.5
0.75
attribute "dep" string "positions"
object "simplex-part" class field
component "positions" value 1
component "connections" value 2
component "data" value 4
end
Jost
Nicolas Neuss schrieb:
OK, since noone responded I changed my program to include a sorting of the
coordinates for 1D situations (in multi-d on unstructured grids this makes
no sense). Then everything works fine. Nevertheless, I would have thought
that DX would not need this reordering. A bug?
Nicolas.
Nicolas Neuss <[EMAIL PROTECTED]> writes:
Hello,
I am plotting finite element data on 1D/2D/3D unstructured grids with dx.
This data is usually smooth inside each cell/element/connection, often even
continuous throughout the domain (but for generality, I do not want to use
this latter continuity).
For 2D and 3D plotting this works rather good. For plotting of FE
functions depending on only one variable I want to use the Plot module (as
was suggested to me recently on this list) to generate an xy-diagram. I
wrote something like the file
image-data-1d.dx:
object 1 class array type float rank 1 shape 1 items 4 data follows
0.5
0.
1.
0.5
object 2 class array type int rank 1 shape 2 items 2 data follows
3 2
1 0
attribute "element type" string "lines"
attribute "ref" string "positions"
object 4 class array type float rank 0 items 4 data follows
0.125
0.
0.1
0.125
attribute "dep" string "positions"
object "simplex-part" class field
component "positions" value 1
component "connections" value 2
component "data" value 4
end
Unfortunately, when I look at it with
dx -script --> and then
data = Import("image-data-1d.dx");
data = Options(data, "mark", "circle");
xyplot = Plot(data);
camera = AutoCamera(xyplot);
image = Render (xyplot, camera);
Display (image);
I see that a triangle appears instead of the desired graph. I assume that
the connections component in the file is disregarded. Does anyone see,
what is the problem here?
Thank you very much,
Nicolas.
--
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Dipl.-Ing. Jost Weber
Institut für Technische Mechanik
RWTH Aachen
Templergraben 64
D-52056 Aachen
Tel.: +49-241-80-94622
Fax.: +49-241-80-92923
email: [EMAIL PROTECTED]
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