Download Data Visualization Tools

PyDVT
A Python package for data displaying
Jorg Klora
Gilles Berruyer
Emmanuel Papillon
Nicolas Pascal
Alexandre Gobbo
What’s PyDVT?
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Package containing Python base
classes for data visualization
applications.
Objective
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Easy remake of existing ESRF
graphical tools in Python.
Easy creation of simple graphic
applications in beamlines (on-line
acquisition)
Standarize graphical application
development
Attempt to share model with Scisoft
(off-line analysis).
Requirements

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Tk or Qt? GUI toolkit independent.
Generic data abstraction layer.
Independent and extensible modules.
Performance.
Multi-Platform.
Easy of use.
Simple and complex cases.
…
SELECTION
MULTIPLE
SELECTION
RECT
SELECTION
LINE
SELECTION
LINE
HLINE
VIEW
SELECTION
VLINE
DATA
EDF FILE
DATA
Info
SPEC SHARED
MEMORY DATA
PAGE
RECT
Info
SPEC FILE
DATA
Array
JPG FILE
DATA
…
*
DATA
SELECTION
*
1
… DATA
*
GRAPH
1
IMAGE
TOOLS
VIEW
CONTOUR
MESH
*
*
*
BINDING OBJECTS
RELATION
FILTER
COLORMAP EDITOR
…
EXTENDED VIEWS
INHERITANCE
GUI BINDING`
COLORMAP
AUXILIARY DIALOGS
QT Binding
FUNCTION
TK Binding
…
FIT
IMPORTATION
APPLICATION
- Simple interface:
SetSource
LoadSource
- Direct low-level calls
Polls for
changes
DATA
SOURCE
Initialization
parameters
Sends
DataChange
Event
DATA
OBJECT
Sends
DataChange
Event
DATA
SELECTION
Reads selection
by calling data's
methods
DATA
SOURCE
DATA
SOURCE
Initialization
parameters
DATA
OBJECT
Sends
DataChange
Event
FILTER
Reads data by
calling GetOutput
DATA
SELECTION
APPLICATION
View
interface
VIEW
Reads data by
calling GetOutput
FILTER
Connects to
View(s)
Draws connected windows
VIEW
VIEW
SELECT
Generates
callback on
selection
FILTER
Sends mouse/keyboard/
ImageChange events
Tkinter x Pyqt Simple Example
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Tk
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Qt
import Tkinter
from SPSData import *
from ImageView import *
import qt
from SPSData import *
from ImageView import *
root = Tkinter.Tk ()
root = qt.Qapplication (sys.argv)
data=SPSData (RefreshInterval=100)
view = ImageView (root)
view.SetSource ( ColormapFilter (None,
RectSelection(data)))
data.SetSource (sys.argv[1])
data.LoadSource (sys.argv[2])
view.Show ()
data=SPSData (RefreshInterval=100)
view = ImageView (None)
view.SetSource ( ColormapFilter (None,
RectSelection(data)))
data.SetSource (sys.argv[1])
data.LoadSource (sys.argv[2])
view.Show ()
root.mainloop ()
root.setMainWidget (View)
root.exec_loop ()
LINE
HLINE
VIEW
SELECTION
VLINE
RECT
…
*
*
GRAPH
VIEW SPECIFIC
NUMPY
FILTER
IMAGE
VIEW
HISTO
3D VIEW
…
GUI BINDING`
QT Binding
TK Binding
*
1
*
1
NUMPY
ARRAY
Even Simpler Example (NumPy)
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Tk

Qt
import Tkinter
from ImageView import *
from Numeric import *
import qt
from ImageView import *
from Numeric import *
root = Tkinter.Tk ()
root = qt.Qapplication (sys.argv)
view = ImageView (root)
arr = Numeric.ones ((500,500))
view.SetData(Image(arr))
view.Show ()
view = ImageView (None)
arr = Numeric.ones ((500,500))
view.SetData(Image(arr))
view.Show ()
root.mainloop ()
root.setMainWidget (View)
root.exec_loop ()
Examples...
More Information...
www.esrf.fr/computing/bliss/python/PyDVT