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

import numpy

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

[docs]class AnnulusInteractor(BaseInteractor, SlicerModel): """ Select an annulus through a 2D plot. This interactor is used to average 2D data with the region defined by 2 radius. this class is defined by 2 Ringinterators. """
[docs] def __init__(self, base, axes, item=None, color='black', zorder=3): BaseInteractor.__init__(self, base, axes, color=color) SlicerModel.__init__(self) self.markers = [] self.axes = axes self.base = base self._item = item self.qmax = max(numpy.fabs(self.data.xmax), numpy.fabs(self.data.xmin)) # must be positive self.dqmin = min(numpy.fabs(self.data.qx_data)) self.connect = self.base.connect # Number of points on the plot self.nbins = 100 # Cursor position of Rings (Left(-1) or Right(1)) self.xmaxd = self.data.xmax self.xmind = self.data.xmin if (self.xmaxd + self.xmind) > 0: self.sign = 1 else: self.sign = -1 # Inner circle self.inner_circle = RingInteractor(self, self.axes, zorder=zorder, r=self.qmax / 2.0, sign=self.sign) self.inner_circle.qmax = self.qmax self.outer_circle = RingInteractor(self, self.axes, zorder=zorder + 1, r=self.qmax / 1.8, sign=self.sign) self.outer_circle.qmax = self.qmax * 1.2 self.update() self._post_data() self.setModelFromParams()
[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.clear_markers() self.outer_circle.clear() self.inner_circle.clear() self.base.connect.clearall()
[docs] def update(self): """ Respond to changes in the model by recalculating the profiles and resetting the widgets. """ # Update locations self.inner_circle.update() self.outer_circle.update()
[docs] def save(self, ev): """ Remember the roughness for this layer and the next so that we can restore on Esc. """ self.inner_circle.save(ev) self.outer_circle.save(ev)
[docs] def _post_data(self, nbins=None): """ Uses annulus parameters to plot averaged data into 1D data. :param nbins: the number of points to plot """ # Data to average data = self.data if data is None: return from sas.sascalc.dataloader.manipulations import Ring rmin = min(numpy.fabs(self.inner_circle.get_radius()), numpy.fabs(self.outer_circle.get_radius())) rmax = max(numpy.fabs(self.inner_circle.get_radius()), numpy.fabs(self.outer_circle.get_radius())) if nbins is not None: self.nbins = nbins # Create the data1D Q average of data2D sect = Ring(r_min=rmin, r_max=rmax, nbins=self.nbins) sector = sect(self.data) if hasattr(sector, "dxl"): dxl = sector.dxl else: dxl = None if hasattr(sector, "dxw"): dxw = sector.dxw else: dxw = None new_plot = Data1D(x=(sector.x - numpy.pi) * 180 / numpy.pi, y=sector.y, dy=sector.dy) new_plot.dxl = dxl new_plot.dxw = dxw new_plot.name = "AnnulusPhi" + "(" + self.data.name + ")" new_plot.title = "AnnulusPhi" + "(" + 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{\phi}", 'degrees') new_plot.yaxis("\\rm{Intensity} ", "cm^{-1}") 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.group_id = "AnnulusPhi" + self.data.name new_plot.id = "AnnulusPhi" + self.data.name new_plot.is_data = True new_plot.xtransform = "x" new_plot.ytransform = "y" 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.plotUpdateSignal.emit([new_plot]) self.base.manager.communicator.forcePlotDisplaySignal.emit([item, new_plot]) if self.update_model: self.setModelFromParams() self.draw()
[docs] def validate(self, param_name, param_value): """ Test the proposed new value "value" for row "row" of parameters """ #Set minimum difference in outer/inner ring to ensure data exists in annulus MIN_DIFFERENCE = self.dqmin isValid = True if param_name == 'inner_radius': # First, check the closeness if numpy.fabs(param_value - self.getParams()['outer_radius']) < MIN_DIFFERENCE: print("Inner and outer radii too close. Please adjust.") isValid = False elif param_value > self.qmax: print("Inner radius exceeds maximum range. Please adjust.") isValid = False elif param_name == 'outer_radius': # First, check the closeness if numpy.fabs(param_value - self.getParams()['inner_radius']) < MIN_DIFFERENCE: print("Inner and outer radii too close. Please adjust.") isValid = False elif param_value > self.qmax: print("Outer radius exceeds maximum range. Please adjust.") isValid = False elif 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] def moveend(self, ev): """ Called when any dragging motion ends. Redraw the plot with new parameters. """ self._post_data(self.nbins)
[docs] def restore(self): """ Restore the roughness for this layer. """ self.inner_circle.restore() self.outer_circle.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["inner_radius"] = numpy.fabs(self.inner_circle._inner_mouse_x) params["outer_radius"] = numpy.fabs(self.outer_circle._inner_mouse_x) params["nbins"] = self.nbins 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. """ inner = numpy.fabs(params["inner_radius"]) outer = numpy.fabs(params["outer_radius"]) self.nbins = int(params["nbins"]) # Update the picture self.inner_circle.set_cursor(inner, self.inner_circle._inner_mouse_y) self.outer_circle.set_cursor(outer, self.outer_circle._inner_mouse_y) # Post the data given the nbins entered by the user self._post_data(self.nbins)
[docs] def draw(self): """ """ self.base.draw()
[docs]class RingInteractor(BaseInteractor): """ Draw a ring Given a radius """
[docs] def __init__(self, base, axes, color='black', zorder=5, r=1.0, sign=1): """ :param: the color of the line that defined the ring :param r: the radius of the ring :param sign: the direction of motion the the marker """ BaseInteractor.__init__(self, base, axes, color=color) self.markers = [] self.axes = axes # Current radius of the ring self._inner_mouse_x = r # Value of the center of the ring self._inner_mouse_y = 0 # previous value of that radius self._inner_save_x = r # Save value of the center of the ring self._inner_save_y = 0 # Class instantiating RingIterator class self.base = base # the direction of the motion of the marker self.sign = sign # # Create a marker # Inner circle marker x_value = [self.sign * numpy.fabs(self._inner_mouse_x)] self.inner_marker = self.axes.plot(x_value, [0], linestyle='', marker='s', markersize=10, color=self.color, alpha=0.6, pickradius=5, label="pick", zorder=zorder, visible=True)[0] # Draw a circle [self.inner_circle] = self.axes.plot([], [], linestyle='-', marker='', color=self.color) # The number of points that make the ring line self.npts = 40 self.connect_markers([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 the slicer and all connected events related to this slicer """ self.clear_markers() self.inner_marker.remove() self.inner_circle.remove()
[docs] def get_radius(self): """ :return self._inner_mouse_x: the current radius of the ring """ return self._inner_mouse_x
[docs] def update(self): """ Draw the new roughness on the graph. """ # Plot inner circle x = [] y = [] for i in range(self.npts): phi = 2.0 * numpy.pi / (self.npts - 1) * i xval = 1.0 * self._inner_mouse_x * numpy.cos(phi) yval = 1.0 * self._inner_mouse_x * numpy.sin(phi) x.append(xval) y.append(yval) self.inner_marker.set(xdata=[self.sign * numpy.fabs(self._inner_mouse_x)], ydata=[0]) self.inner_circle.set_data(x, y)
[docs] def save(self, ev): """ Remember the roughness for this layer and the next so that we can restore on Esc. """ self._inner_save_x = self._inner_mouse_x self._inner_save_y = self._inner_mouse_y
[docs] def moveend(self, ev): """ Called after a dragging motion """ self.base.moveend(ev)
[docs] def restore(self): """ Restore the roughness for this layer. """ self._inner_mouse_x = self._inner_save_x self._inner_mouse_y = self._inner_save_y
[docs] def move(self, x, y, ev): """ Process move to a new position, making sure that the move is allowed. """ self._inner_mouse_x = x self._inner_mouse_y = y self.base.base.update()
[docs] def set_cursor(self, x, y): """ draw the ring given x, y value """ self.move(x, y, None) self.update()
[docs] def getParams(self): """ Store a copy of values of parameters of the slicer into a dictionary. :return params: the dictionary created """ params = {} params["radius"] = numpy.fabs(self._inner_mouse_x) 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. """ x = params["radius"] self.set_cursor(x, self._inner_mouse_y)