8.3.6. Data Viewers

The data viewers are classes devoted to data display from scalar data up to 4 dimensions data. All the viewers inherits from the base class ViewerBase and then offers options and interactions depending their dimensionality

Summary of the data viewers classes

`base.ViewerBase`([parent, title])	Base Class for data viewers implementing all common functionalities
`viewer0D.Viewer0D`([parent, title, ...])	this plots 0D data on a plotwidget with history.
`viewer1D.Viewer1D`([parent, title, ...])	DataWithAxes of type Data1D can be plotted using this data viewer
`viewer2D.Viewer2D`([parent, title, rois_dock])	Object managing plotting and manipulation of 2D data using a View2D
`viewerND.ViewerND`([parent, title, rois_dock])

class pymodaq_gui.plotting.data_viewers.base.ViewerBase(parent=None, title='')[source]

Base Class for data viewers implementing all common functionalities

Parameters:

parent (QWidget)
title (str)

Variables:

view (QObject) – Ui interface of the viewer
data_to_export_signal (pyqtSignal)
ROI_changed (pyqtSignal)
crosshair_dragged (pyqtSignal, float])
crosshair_clicked (pyqtSignal)
sig_double_clicked (pyqtSignal, float])
status_signal (pyqtSignal)

Attributes:

get_action: Convenience method
has_action: Convenience method
is_action_checked: Convenience method
is_action_visible: Convenience method
roi_manager: Convenience method
roi_target: Convenience method to get the ROI target object
set_action_checked: Convenience method
set_action_visible: Convenience method
title
toolbar: Convenience property
viewer_type: str: the viewer data type see DATA_TYPES

Methods

`activate_roi`([activate])	Activate the Roi manager using the corresponding action
`add_attributes_from_view`()	Convenience function to add attributes from the view to self
`move_roi_target`([pos])	move a specific read only ROI at the given position on the viewer
`setVisible`([show])	convenience method to show or hide the parent widget
`show_data`(data, **kwargs)	Entrypoint to display data into the viewer
`show_data_temp`(data, **kwargs)	Entrypoint to display temporary data into the viewer
`show_roi_target`([show])	Show/Hide a specific read only ROI
`trigger_action`(action_name)	Convenience function to trigger programmatically one of the action of the related view

ROI_changed
ROI_select_signal
crosshair_clicked
crosshair_dragged
data_to_export_signal
do_math
roi_select_signal
sig_double_clicked
status_signal

activate_roi(activate=True)[source]: Activate the Roi manager using the corresponding action

add_attributes_from_view()[source]: Convenience function to add attributes from the view to self

move_roi_target(pos=None, **kwargs)[source]: move a specific read only ROI at the given position on the viewer

setVisible(show=True)[source]: convenience method to show or hide the parent widget

show_data(data, **kwargs)[source]

Entrypoint to display data into the viewer

Parameters:: data (DataWithAxes)

show_data_temp(data, **kwargs)[source]

Entrypoint to display temporary data into the viewer

No processed data signal is emitted from the viewer

Parameters:: data (DataWithAxes)

show_roi_target(show=True)[source]: Show/Hide a specific read only ROI

trigger_action(action_name)[source]: Convenience function to trigger programmatically one of the action of the related view

property get_action: Convenience method

property has_action: Convenience method

property is_action_checked: Convenience method

property is_action_visible: Convenience method

property roi_manager: ROIViewerManager | None: Convenience method

property roi_target: InfiniteLine | ROI: Convenience method to get the ROI target object

property set_action_checked: Convenience method

property set_action_visible: Convenience method

property toolbar: Convenience property

property viewer_type

the viewer data type see DATA_TYPES

Type:: str

class pymodaq_gui.plotting.data_viewers.viewer0D.Viewer0D(parent=None, title='', show_toolbar=True, no_margins=False, rois_dock=None)[source]

this plots 0D data on a plotwidget with history. Display as numbers in a table is possible.

Datas and measurements are then exported with the signal data_to_export_signal

Attributes:

labels

Methods

update_colors

class pymodaq_gui.plotting.data_viewers.viewer1D.Viewer1D(parent=None, title='', show_toolbar=True, no_margins=False, flip_axes=False, rois_dock=None)[source]

DataWithAxes of type Data1D can be plotted using this data viewer

Methods:

show_data – parameters:

dwa: a DataWithAxes
scatter_dwa: an optional extra DataWithAxes to be plotted with scatter points it could define extra_attributes such as symbol: str (to define the symbol layout default: ‘o’) and symbol_size: int (to define the symbol size)

Attributes:

crosshair: Convenience method
labels

Methods

`activate_roi`([activate])
`move_roi_target`([pos])	move a specific read only ROI at the given position on the viewer
`set_crosshair_position`(xpos[, ypos])	Convenience method to set the crosshair positions

add_plot_item
crosshair_changed
double_clicked
get_axis_from_view
prepare_connect_ui
process_crosshair_lineouts
process_roi_lineouts
roi_changed
selected_region_changed
update_colors
update_status

move_roi_target(pos=None)[source]: move a specific read only ROI at the given position on the viewer

set_crosshair_position(xpos, ypos=0)[source]: Convenience method to set the crosshair positions

property crosshair: Convenience method

class pymodaq_gui.plotting.data_viewers.viewer2D.Viewer2D(parent=None, title='', rois_dock=None)[source]

Object managing plotting and manipulation of 2D data using a View2D

Attributes:

crosshair: Convenience method
image_widget: Convenience method
x_axis
y_axis

Methods

`activate_roi`([activate])	Activate the Roi manager using the corresponding action
`get_axes_from_view`(data)	Obtain axes info from the view
`get_data_at`()	Convenience method
`move_roi_target`([pos, size])	move a specific read only ROI at the given position on the viewer
`set_crosshair_position`(xpos, ypos)	Convenience method to set the crosshair positions
`set_gradient`(image_key, gradient)	convenience function
`set_image_transform`()	Deactivate some tool buttons if data type is "spread" then apply transform_image
`show_roi`([show, show_roi_widget])	convenience function to control roi

autolevels_first
crosshair_changed
double_clicked
prepare_connect_ui
process_crosshair_lineouts
process_roi_lineouts
roi_changed
selected_region_changed
set_visible_items
transform_image
update_crosshair_data
update_data

activate_roi(activate=True)[source]: Activate the Roi manager using the corresponding action

get_axes_from_view(data)[source]

Obtain axes info from the view

Only for uniform data

get_data_at()[source]: Convenience method

move_roi_target(pos=None, size=(1, 1))[source]: move a specific read only ROI at the given position on the viewer

set_crosshair_position(xpos, ypos)[source]: Convenience method to set the crosshair positions

set_gradient(image_key, gradient)[source]: convenience function

set_image_transform()[source]

Deactivate some tool buttons if data type is “spread” then apply transform_image

Return type:: DataRaw

show_roi(show=True, show_roi_widget=True)[source]: convenience function to control roi

property crosshair: Convenience method

property image_widget: Convenience method

class pymodaq_gui.plotting.data_viewers.viewerND.ViewerND(parent=None, title='', rois_dock=None)[source]

Methods

setup_actions()

connect_things
prepare_ui
reshape_data
set_data_test
setup_widgets
show_settings
update_data_dim
update_data_displayer
update_filters
update_widget_visibility