Source code for sas.qtgui.Plotting.Slicers.BoxSlicer

import numpy

from sas.qtgui.Plotting.Slicers.BaseInteractor import BaseInteractor
from sas.qtgui.Plotting.PlotterData import Data1D
import sas.qtgui.Utilities.GuiUtils as GuiUtils
from sas.qtgui.Plotting.SlicerModel import SlicerModel


[docs]class BoxInteractor(BaseInteractor, SlicerModel): """ BoxInteractor define a rectangle that return data1D average of Data2D in a rectangle area defined by -x, x ,y, -y """
[docs] def __init__(self, base, axes, item=None, color='black', zorder=3): BaseInteractor.__init__(self, base, axes, color=color) SlicerModel.__init__(self) # Class initialization self.markers = [] self.axes = axes self._item = item # connecting artist self.connect = self.base.connect # which direction is the preferred interaction direction self.direction = None # determine x y values self.x = 0.5 * min(numpy.fabs(self.data.xmax), numpy.fabs(self.data.xmin)) self.y = 0.5 * min(numpy.fabs(self.data.xmax), numpy.fabs(self.data.xmin)) # when reach qmax reset the graph self.qmax = max(self.data.xmax, self.data.xmin, self.data.ymax, self.data.ymin) # Number of points on the plot self.nbins = 100 # If True, I(|Q|) will be return, otherwise, # negative q-values are allowed self.fold = True # reference of the current Slab averaging self.averager = None # Create vertical and horizaontal lines for the rectangle self.vertical_lines = VerticalLines(self, self.axes, color='blue', zorder=zorder, y=self.y, x=self.x) self.vertical_lines.qmax = self.qmax self.horizontal_lines = HorizontalLines(self, self.axes, color='green', zorder=zorder, x=self.x, y=self.y) self.horizontal_lines.qmax = self.qmax # draw the rectangle and plost the data 1D resulting # of averaging data2D self.update() self._post_data() self.setModelFromParams()
[docs] def update_and_post(self): """ Update the slicer and plot the resulting data """ self.update() self._post_data()
[docs] def set_layer(self, n): """ Allow adding plot to the same panel :param n: the number of layer """ self.layernum = n self.update()
[docs] def clear(self): """ Clear the slicer and all connected events related to this slicer """ self.averager = None self.clear_markers() self.horizontal_lines.clear() self.vertical_lines.clear() self.base.connect.clearall()
[docs] def update(self): """ Respond to changes in the model by recalculating the profiles and resetting the widgets. """ # #Update the slicer if an horizontal line is dragged if self.horizontal_lines.has_move: self.horizontal_lines.update() self.vertical_lines.update(y=self.horizontal_lines.y) # #Update the slicer if a vertical line is dragged if self.vertical_lines.has_move: self.vertical_lines.update() self.horizontal_lines.update(x=self.vertical_lines.x)
[docs] def save(self, ev): """ Remember the roughness for this layer and the next so that we can restore on Esc. """ self.vertical_lines.save(ev) self.horizontal_lines.save(ev)
[docs] def _post_data(self): pass
[docs] def post_data(self, new_slab=None, nbins=None, direction=None): """ post data averaging in Qx or Qy given new_slab type :param new_slab: slicer that determine with direction to average :param nbins: the number of points plotted when averaging :param direction: the direction of averaging """ if self.direction is None: self.direction = direction x_min = -1 * numpy.fabs(self.vertical_lines.x) x_max = numpy.fabs(self.vertical_lines.x) y_min = -1 * numpy.fabs(self.horizontal_lines.y) y_max = numpy.fabs(self.horizontal_lines.y) if nbins is not None: self.nbins = nbins if self.averager is None: if new_slab is None: msg = "post data:cannot average , averager is empty" raise ValueError(msg) self.averager = new_slab if self.direction == "X": if self.fold: x_low = 0 else: x_low = numpy.fabs(x_min) bin_width = (x_max + x_low) / self.nbins elif self.direction == "Y": if self.fold: y_low = 0 else: y_low = numpy.fabs(y_min) bin_width = (y_max + y_low) / self.nbins else: msg = "post data:no Box Average direction was supplied" raise ValueError(msg) # # Average data2D given Qx or Qy box = self.averager(x_min=x_min, x_max=x_max, y_min=y_min, y_max=y_max, bin_width=bin_width) box.fold = self.fold boxavg = box(self.data) # 3 Create Data1D to plot if hasattr(boxavg, "dxl"): dxl = boxavg.dxl else: dxl = None if hasattr(boxavg, "dxw"): dxw = boxavg.dxw else: dxw = None new_plot = Data1D(x=boxavg.x, y=boxavg.y, dy=boxavg.dy) new_plot.dxl = dxl new_plot.dxw = dxw new_plot.name = str(self.averager.__name__) + \ "(" + self.data.name + ")" new_plot.title = str(self.averager.__name__) + \ "(" + self.data.name + ")" new_plot.source = self.data.source new_plot.interactive = True new_plot.detector = self.data.detector # If the data file does not tell us what the axes are, just assume... new_plot.xaxis("\\rm{Q}", "A^{-1}") new_plot.yaxis("\\rm{Intensity} ", "cm^{-1}") data = self.data if hasattr(data, "scale") and data.scale == 'linear' and \ self.data.name.count("Residuals") > 0: new_plot.ytransform = 'y' new_plot.yaxis("\\rm{Residuals} ", "/") new_plot.id = (self.averager.__name__) + self.data.name new_plot.group_id = new_plot.id new_plot.is_data = True item = self._item if self._item.parent() is not None: item = self._item.parent() GuiUtils.updateModelItemWithPlot(item, new_plot, new_plot.id) self.base.manager.communicator.forcePlotDisplaySignal.emit([item, new_plot]) if self.update_model: self.setModelFromParams() self.draw()
[docs] def moveend(self, ev): """ Called after a dragging event. Post the slicer new parameters and creates a new Data1D corresponding to the new average """ self._post_data()
[docs] def restore(self): """ Restore the roughness for this layer. """ self.horizontal_lines.restore() self.vertical_lines.restore()
[docs] def move(self, x, y, ev): """ Process move to a new position, making sure that the move is allowed. """ pass
[docs] def set_cursor(self, x, y): pass
[docs] def getParams(self): """ Store a copy of values of parameters of the slicer into a dictionary. :return params: the dictionary created """ params = {} params["x_max"] = numpy.fabs(self.vertical_lines.x) params["y_max"] = numpy.fabs(self.horizontal_lines.y) params["nbins"] = self.nbins params["fold"] = self.fold return params
[docs] def setParams(self, params): """ Receive a dictionary and reset the slicer with values contained in the values of the dictionary. :param params: a dictionary containing name of slicer parameters and values the user assigned to the slicer. """ self.x = float(numpy.fabs(params["x_max"])) self.y = float(numpy.fabs(params["y_max"])) self.nbins = params["nbins"] self.fold = params["fold"] self.horizontal_lines.update(x=self.x, y=self.y) self.vertical_lines.update(x=self.x, y=self.y) self.post_data(nbins=None)
[docs] def draw(self): """ """ self.base.draw()
[docs]class HorizontalLines(BaseInteractor): """ Draw 2 Horizontal lines centered on (0,0) that can move on the x- direction and in opposite direction """
[docs] def __init__(self, base, axes, color='black', zorder=5, x=0.5, y=0.5): """ """ BaseInteractor.__init__(self, base, axes, color=color) # Class initialization self.markers = [] self.axes = axes # Saving the end points of two lines self.x = x self.save_x = x self.y = y self.save_y = y # Creating a marker # Inner circle marker self.inner_marker = self.axes.plot([0], [self.y], linestyle='', marker='s', markersize=10, color=self.color, alpha=0.6, pickradius=5, label="pick", zorder=zorder, visible=True)[0] # Define 2 horizontal lines self.top_line = self.axes.plot([self.x, -self.x], [self.y, self.y], linestyle='-', marker='', color=self.color, visible=True)[0] self.bottom_line = self.axes.plot([self.x, -self.x], [-self.y, -self.y], linestyle='-', marker='', color=self.color, visible=True)[0] # Flag to check the motion of the lines self.has_move = False # Connecting markers to mouse events and draw self.connect_markers([self.top_line, self.inner_marker]) self.update()
[docs] def set_layer(self, n): """ Allow adding plot to the same panel :param n: the number of layer """ self.layernum = n self.update()
[docs] def clear(self): """ Clear this slicer and its markers """ self.clear_markers() self.inner_marker.remove() self.top_line.remove() self.bottom_line.remove()
[docs] def update(self, x=None, y=None): """ Draw the new roughness on the graph. :param x: x-coordinates to reset current class x :param y: y-coordinates to reset current class y """ # Reset x, y- coordinates if send as parameters if x is not None: self.x = numpy.sign(self.x) * numpy.fabs(x) if y is not None: self.y = numpy.sign(self.y) * numpy.fabs(y) # Draw lines and markers self.inner_marker.set(xdata=[0], ydata=[self.y]) self.top_line.set(xdata=[self.x, -self.x], ydata=[self.y, self.y]) self.bottom_line.set(xdata=[self.x, -self.x], ydata=[-self.y, -self.y])
[docs] def save(self, ev): """ Remember the roughness for this layer and the next so that we can restore on Esc. """ self.save_x = self.x self.save_y = self.y
[docs] def moveend(self, ev): """ Called after a dragging this edge and set self.has_move to False to specify the end of dragging motion """ self.has_move = False self.base.moveend(ev)
[docs] def restore(self): """ Restore the roughness for this layer. """ self.x = self.save_x self.y = self.save_y
[docs] def move(self, x, y, ev): """ Process move to a new position, making sure that the move is allowed. """ self.y = y self.has_move = True self.base.base.update()
[docs]class VerticalLines(BaseInteractor): """ Select an annulus through a 2D plot """
[docs] def __init__(self, base, axes, color='black', zorder=5, x=0.5, y=0.5): """ """ BaseInteractor.__init__(self, base, axes, color=color) self.markers = [] self.axes = axes self.x = numpy.fabs(x) self.save_x = self.x self.y = numpy.fabs(y) self.save_y = y # Inner circle marker self.inner_marker = self.axes.plot([self.x], [0], linestyle='', marker='s', markersize=10, color=self.color, alpha=0.6, pickradius=5, label="pick", zorder=zorder, visible=True)[0] self.right_line = self.axes.plot([self.x, self.x], [self.y, -self.y], linestyle='-', marker='', color=self.color, visible=True)[0] self.left_line = self.axes.plot([-self.x, -self.x], [self.y, -self.y], linestyle='-', marker='', color=self.color, visible=True)[0] self.has_move = False self.connect_markers([self.right_line, self.inner_marker]) self.update()
[docs] def validate(self, param_name, param_value): """ Validate input from user """ return True
[docs] def set_layer(self, n): """ Allow adding plot to the same panel :param n: the number of layer """ self.layernum = n self.update()
[docs] def clear(self): """ Clear this slicer and its markers """ self.clear_markers() self.inner_marker.remove() self.left_line.remove() self.right_line.remove()
[docs] def update(self, x=None, y=None): """ Draw the new roughness on the graph. :param x: x-coordinates to reset current class x :param y: y-coordinates to reset current class y """ # Reset x, y -coordinates if given as parameters if x is not None: self.x = numpy.sign(self.x) * numpy.fabs(x) if y is not None: self.y = numpy.sign(self.y) * numpy.fabs(y) # Draw lines and markers self.inner_marker.set(xdata=[self.x], ydata=[0]) self.left_line.set(xdata=[-self.x, -self.x], ydata=[self.y, -self.y]) self.right_line.set(xdata=[self.x, self.x], ydata=[self.y, -self.y])
[docs] def save(self, ev): """ Remember the roughness for this layer and the next so that we can restore on Esc. """ self.save_x = self.x self.save_y = self.y
[docs] def moveend(self, ev): """ Called after a dragging this edge and set self.has_move to False to specify the end of dragging motion """ self.has_move = False self.base.moveend(ev)
[docs] def restore(self): """ Restore the roughness for this layer. """ self.x = self.save_x self.y = self.save_y
[docs] def move(self, x, y, ev): """ Process move to a new position, making sure that the move is allowed. """ self.has_move = True self.x = x self.base.base.update()
[docs]class BoxInteractorX(BoxInteractor): """ Average in Qx direction """
[docs] def __init__(self, base, axes, item=None, color='black', zorder=3): BoxInteractor.__init__(self, base, axes, item=item, color=color) self.base = base self._post_data()
[docs] def _post_data(self): """ Post data creating by averaging in Qx direction """ from sas.sascalc.dataloader.manipulations import SlabX self.post_data(SlabX, direction="X")
[docs] def validate(self, param_name, param_value): """ Validate input from user. Values get checked at apply time. """ isValid = True if param_name == 'nbins': # Can't be 0 if param_value < 1: print("Number of bins cannot be less than or equal to 0. Please adjust.") isValid = False return isValid
[docs]class BoxInteractorY(BoxInteractor): """ Average in Qy direction """
[docs] def __init__(self, base, axes, item=None, color='black', zorder=3): BoxInteractor.__init__(self, base, axes, item=item, color=color) self.base = base self._post_data()
[docs] def _post_data(self): """ Post data creating by averaging in Qy direction """ from sas.sascalc.dataloader.manipulations import SlabY self.post_data(SlabY, direction="Y")
[docs] def validate(self, param_name, param_value): """ Validate input from user Values get checked at apply time. """ isValid = True if param_name == 'nbins': # Can't be 0 if param_value < 1: print("Number of bins cannot be less than or equal to 0. Please adjust.") isValid = False return isValid