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- PyDVT.Filter.Filter
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- ColormapFilter
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- Image
- ImageFilter
- PyDVT.View.View(PyDVT.GUIBinding.Binding.Container)
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- ImageView
class ColormapFilter(PyDVT.Filter.Filter) |
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View's standard filter |
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- ConnectColormap(self, colormap_sel)
- Connects the ColormapFilter object to a ColormapSelect object. The view object
will answer to ColormapChange events from Colormap object
Parameter:
colormap: colormap object
- DataChanged(self, par) from PyDVT.Filter.Filter
- DataCoord2SelectionCoord(self, data_coord)
- Overriden to corret coords convertion based on reduction applied.
- Destroy(self, source=None)
- Virtual: See View.Destroy
- DisconnectColormap(self)
- Disconnects the ColormapFilter object from a ColormapSelect object.
Parameter:
colormap: colormap object
- GetColormapParameters(self)
- Gets colormap parameters of the view object, a dictionary, with the keys:
AbsoluteMinMax: tuple (min,max) with the lowest and highest values of the data
MinMax: tuple (min,max) with the lowest and highest values used for the colormap
Scale: "Linear", "Logarithmic", "Gamma"
Colormap: "GrayScale","Temperature","Red","Green","Blue" or "RevGrey"
Gamma: Factor for gamma scale
AutoScale: if set, generates MinMax according to the displayed data
(takes highest and lowest values of the data)
- GetData(self) from PyDVT.Filter.Filter
- GetDataSelection(self) from PyDVT.Filter.Filter
- GetInput(self) from PyDVT.Filter.Filter
- GetOutput(self)
- Returns the selection data (dictionary)
Keys:
"name" : string
"data" : 2d-NumPy array with the original data
"image" : String with RGB representation of data
"size": Size of the image
"depth": 8 or 32
"colormap_table": if "depth"==8, palette table, otherwize None
"filterchange" : flag indicating just a change in
filter parameters has taken place
(not the actual data).
ImageView always keeps Zoom/Position
if this flag is set.
- GetSource(self) from PyDVT.Filter.Filter
- Refresh(self) from PyDVT.Filter.Filter
- SelectionCoord2DataCoord(self, selection_coord)
- Overriden to corret coords convertion based on reduction applied.
- SetColormapParameters(self, colormap_pars)
- Sets colormap parameters of the view object
Parameters
colormap_pars: dictionary with the following keys (as described in GetColormapParameters):
MinMax
Scale
Colormap
AutoScale
Gamma
AbsoluteMinMax is not considered
- SetReducParameters(self, reduc, fastreduc)
- Sets reduction parameters
Parameters:
reduc: scale to the reduction
fastreduc: if non-zero just eliminates rows/cols
- SetSynchronized(self, synchronized) from PyDVT.Filter.Filter
- __init__(self, name=None, source=None, synchronized=1, buffer_input=0)
- Parameters:
name: optional name of the function
source: Source Filter/DataSelection
synchronized: non-zero if on-line
buffer_input: see Filter.__init__
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class Image(ColormapFilter) |
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View's simplified filter for direct NumPy interface.
(creates and hides it's own data object) |
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- ConnectColormap(self, colormap_sel) from ColormapFilter
- DataChanged(self, par) from PyDVT.Filter.Filter
- DataCoord2SelectionCoord(self, data_coord) from ColormapFilter
- Destroy(self, source=None)
- If filter gets out of scope, this should be called to destroy
internally created data object.
- DisconnectColormap(self) from ColormapFilter
- GetColormapParameters(self) from ColormapFilter
- GetData(self) from PyDVT.Filter.Filter
- GetDataSelection(self) from PyDVT.Filter.Filter
- GetInput(self) from PyDVT.Filter.Filter
- GetOutput(self) from ColormapFilter
- GetSource(self) from PyDVT.Filter.Filter
- Refresh(self) from PyDVT.Filter.Filter
- SelectionCoord2DataCoord(self, selection_coord) from ColormapFilter
- SetColormapParameters(self, colormap_pars) from ColormapFilter
- SetReducParameters(self, reduc, fastreduc) from ColormapFilter
- SetSynchronized(self, synchronized) from PyDVT.Filter.Filter
- __init__(self, data=None, name=None)
- Parameters:
data: NumPy 2d array to be displayed
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class ImageView(PyDVT.View.View) |
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View derived class for image representation of 2d data.
This class accepts just one source object. If the SetData
is called with multiple sources, only the first one is considered.
ImageView expects the following keys from it's source (GetOutput
method):
"image": string, image RGBX representation, as returned by spslut.
"size": size of image, tuple (x,y) .
"depth": 8 or 32(default)
"colormap_table": if "depth"==8, palette table, otherwize None
"name": Optional. Not used for the moment.
"data": Optional. Reference to original NumPy array. Not used by this class,
but derived classes and/or applications to retrieve original data.
"datachanged": Optional. Flag set by any intermediate Filter to signalize
ImageView that a DataChange event was taken place due to
a change in the parameters of the Filter, and not the
data itself ("datachanged" equals to 0). If this flag is
present and set to zero, ImageView don't change zoom/scroll
position in a DataChange event, even if LockPosition is set
to 0.
Interface:
===========================
View interface
SetZoom
ZoomTo
ClearZoomSelect
SetCursorType
GetColormapFilter
GetImagePositionValue
GetDataPositionValue
Overridables:
===========================
View overridables
CreateMenu
EventPosition
Some of Drawable's methods are callable at application level (they're accessed
through View.GetDrawable() (see GUIBinding.Drawable2D): |
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- AddMenuPopupCascade(self, label, menu) from PyDVT.View.View
- AddMenuPopupItem(self, label, Command, Style='command') from PyDVT.View.View
- AddMenuSeparator(self) from PyDVT.View.View
- ClearMenu(self) from PyDVT.View.View
- ClearZoomSelect(self)
- Called to destroy zoom ViewSelect object.
Called in the zoom selection event, but applications can assure
the destruction by calling this.
- CreateDrawable(self)
- Virtual: See View.CreateDrawable
- CreateMenu(self)
- Can be overwritten by derived classes to create a
different popup menu
- DataChanged(self, source=None)
- Virtual: See View.DataChanged
- DataCoord2ImageCoord(self, data_coord)
- Virtual: See View.DataCoord2ImageCoord
- DeleteMenuItem(self, index) from PyDVT.View.View
- Destroy(self, source=None) from PyDVT.View.View
- DisableMenuItem(self, index) from PyDVT.View.View
- EnableMenuItem(self, index) from PyDVT.View.View
- EventButtonPress(self, pos) from PyDVT.View.View
- EventButtonPressMotion(self, pos) from PyDVT.View.View
- EventButtonRelease(self, pos) from PyDVT.View.View
- EventDoubleClick(self, pos) from PyDVT.View.View
- EventKeyPress(self, key, flags) from PyDVT.View.View
- EventMotion(self, pos) from PyDVT.View.View
- EventPosition(self, source)
- Overridable: Cursor callback event
Parameters:
source: ImageViewSelect object thar generated the event
- GetColormapFilter(self)
- Auxiliar method. Search the filters recursively in order to find a ColormapFilter.
This can be useful to derived classes to retrieve the ColormapFilter (in order to
change its parameters) if some othere filters are cascaded after it.
If no ColormapFilter is found, returns None.
- GetDataPositionValue(self, data_pos)
- Returns the value of the data for a given data coordinate, in the
linked data object.
If invalid coordinate or no linked data, returns None
- GetDrawable(self) from PyDVT.View.View
- GetDrawableHeight(self) from PyDVT.View.View
- GetDrawableWidth(self) from PyDVT.View.View
- GetHeight(self) from PyDVT.GUIBinding.Binding.Container
- GetImagePositionValue(self, image_pos)
- Returns the value of the data for a given image coordinate.
If invalid coordinate or no ImageData present, returns None
- GetPopupMenu(self) from PyDVT.View.View
- GetPosition(self, event)
- Virtual: See View.GetPosition
- GetSaveFormats(self)
- Returns tuple with supported save formats
- GetSource(self) from PyDVT.View.View
- GetWidth(self) from PyDVT.GUIBinding.Binding.Container
- ImageCoord2DataCoord(self, view_coord) from PyDVT.View.View
- Invalidate(self) from PyDVT.View.View
- IsVisible(self) from PyDVT.GUIBinding.Binding.Container
- LockPosition(self, value) from PyDVT.View.View
- Redraw(self)
- Virtual: See View.Redraw
- Refresh(self) from PyDVT.View.View
- Save(self, filename, format) from PyDVT.View.View
- SetCursor(self, cursor) from PyDVT.View.View
- SetCursorType(self, cursortype)
- Sets the cursor
Parameters:
cursortype: "None" (default) or "Crosshairs"
Both types generate EventPosition events
- SetOnLine(self, value) from PyDVT.View.View
- SetPointer(self, pointer) from PyDVT.GUIBinding.Binding.Container
- SetSize(self, width, height) from PyDVT.GUIBinding.Binding.Container
- SetSource(self, source=()) from PyDVT.View.View
- SetZoom(self, val=None, rect=None, com=None)
- Sets zoom state to the ImageView object
Parameters: (only one must be set)
val: a float, sets directly a value to the zoom factor
rect: a tuple in the format (x0,y0,x1,y1), that defines the coordinates of
the upper-left and the lower-right points of a zoomed area, in
data selection coordinates.
com: can be "fit", "normal", "in" and "out"
- Show(self) from PyDVT.GUIBinding.Binding.Container
- Update(self) from PyDVT.View.View
- ViewCoord2DataCoord(self, view_coord)
- Virtual: See View.ViewCoord2DataCoord
- ZoomTo(self)
- Called from menu option: creates ImageViewSelectRect to define a
zoom region. Promotes zoom on selection event.
- _ButtonPress(self, event) from PyDVT.View.View
- _ButtonPressMotion(self, event) from PyDVT.View.View
- _ButtonRelease(self, event) from PyDVT.View.View
- _CmdLockPosition(self) from PyDVT.View.View
- _CmdOnLine(self) from PyDVT.View.View
- _DataChanged(self, source=None) from PyDVT.View.View
- _DataDeleted(self, source=None) from PyDVT.View.View
- _DoubleClick(self, event) from PyDVT.View.View
- _EventZoomSelection(self, source)
- _KeyPress(self, key, flags=None) from PyDVT.View.View
- _Motion(self, event) from PyDVT.View.View
- _RightButtonPress(self, event) from PyDVT.View.View
- __init__(self, parent=None, pars={}, **kw)
- See View.__init__
Parameters:
parent: parent window
pars: Dictionary with View initialization options
New options defined by this class (in addiction to base class options):
"ScrollMode": "ON","OFF","AUTO"
"ZoomMode": "ON","OFF","FIT_TO_SCREEN"
"Oversize" (Just in TkBinding):
"AUTO_SET": manages automatically the oversize
region when zooming/scrolling
"NONE": no oversize area
"FULL_IMAGE": always loads complete
float: defines directly the oversize area
"StoreImageData": If set, view object stores "data" from it's selection
(if exists) in self.ImageData. By default it is not
stored, to save memory, but can be useful to access
pixel values when image data has ben changed in
relation to it's data object values, by any transformation.
kw: keywords to container initialization
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