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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,90 +1,62 @@ | ||
| from __future__ import absolute_import | ||
| import math | ||
| from six.moves import zip | ||
| import numpy as np | ||
| from scipy import spatial | ||
| from matplotlib import pyplot as plt | ||
|
|
||
| try: | ||
| import pylab | ||
| except ImportError: | ||
| "" | ||
|
|
||
| class AnnoteFinder: | ||
| """ | ||
| callback for matplotlib to display an annotation when points are clicked on. The | ||
| point which is closest to the click and within xtol and ytol is identified. | ||
| class AnnotationFinder: | ||
| """MPL callback to display an annotation when points are clicked. | ||
| Register this function like this: | ||
| scatter(xdata, ydata) | ||
| af = AnnoteFinder(xdata, ydata, annotes) | ||
| connect('button_press_event', af) | ||
| """ | ||
| The nearest point within xtol and ytol is identified. | ||
| def __init__(self, xdata, ydata, annotes, axis=None, xtol=None, ytol=None, xmin=None,ymin=None,xmax=None,ymax=None): | ||
| self.data = list(zip(xdata, ydata, annotes)) | ||
| if xtol is None: | ||
| xtol = ((max(xdata) - min(xdata))/float(len(xdata)))/2 | ||
| if ytol is None: | ||
| ytol = ((max(ydata) - min(ydata))/float(len(ydata)))/2 | ||
| self.xtol = xtol | ||
| self.ytol = ytol | ||
| if axis is None: | ||
| self.axis = pylab.gca() | ||
| else: | ||
| self.axis= axis | ||
| self.drawnAnnotations = {} | ||
| self.links = [] | ||
| self.xmin=xmin | ||
| self.ymin=ymin | ||
| self.xmax=xmax | ||
| self.ymax=ymax | ||
| Register this function like this: | ||
| def distance(self, x1, x2, y1, y2): | ||
| """ | ||
| return the distance between two points | ||
| plt.scatter(xdata, ydata) | ||
| af = AnnotationFinder(xdata, ydata, annotations) | ||
| plt.connect('button_press_event', af) | ||
| """ | ||
| return math.hypot(x1 - x2, y1 - y2) | ||
|
|
||
| def __call__(self, event): | ||
| if event.inaxes: | ||
| clickX = event.xdata | ||
| clickY = event.ydata | ||
| if self.axis is None or self.axis==event.inaxes: | ||
| annotes = [] | ||
| for x,y,a in self.data: | ||
| if clickX-self.xtol < x < clickX+self.xtol and clickY-self.ytol < y < clickY+self.ytol : | ||
| annotes.append((self.distance(x,clickX,y,clickY),x,y, a) ) | ||
| if annotes: | ||
| annotes.sort() | ||
| distance, x, y, annote = annotes[0] | ||
| self.drawAnnote(event.inaxes, x, y, annote) | ||
| for l in self.links: | ||
| l.drawSpecificAnnote(annote) | ||
| def __init__(self, xdata, ydata, annotations, axis=None): | ||
| self.points = np.array(zip(xdata, ydata)) | ||
| self.annotations = annotations | ||
| self.nntree = spatial.cKDTree(self.points) | ||
| if axis is None: | ||
| self.axis = plt.gca() | ||
| else: | ||
| self.axis = axis | ||
| self.drawn_annotations = {} | ||
| # links to other AnnotationFinder instances | ||
| self.links = [] | ||
|
|
||
| def drawAnnote(self, axis, x, y, annote): | ||
| """ | ||
| Draw the annotation on the plot | ||
| """ | ||
| if (x,y) in self.drawnAnnotations: | ||
| markers = self.drawnAnnotations[(x,y)] | ||
| for m in markers: | ||
| m.set_visible(not m.get_visible()) | ||
| pylab.axes(self.axis) | ||
| if self.xmin is not None: pylab.xlim(xmin=self.xmin) | ||
| if self.ymin is not None: pylab.ylim(ymin=self.ymin) | ||
| if self.xmax is not None: pylab.xlim(xmax=self.xmax) | ||
| if self.ymax is not None: pylab.ylim(ymax=self.ymax) | ||
| self.axis.figure.canvas.draw() | ||
| else: | ||
| t = axis.text(x,y, "(%3.2f, %3.2f) - %s"%(x,y,annote), ) | ||
| self.drawnAnnotations[(x,y)] = [t] | ||
| pylab.axes(self.axis) | ||
| if self.xmin is not None: pylab.xlim(xmin=self.xmin) | ||
| if self.ymin is not None: pylab.ylim(ymin=self.ymin) | ||
| if self.xmax is not None: pylab.xlim(xmax=self.xmax) | ||
| if self.ymax is not None: pylab.ylim(ymax=self.ymax) | ||
| self.axis.figure.canvas.draw() | ||
| def __call__(self, event): | ||
| if event.inaxes: | ||
| clicked = np.array([event.xdata, event.ydata]) | ||
| if self.axis is None or self.axis == event.inaxes: | ||
| nnidx = self.nntree.query(clicked)[1] | ||
| x, y = self.points[nnidx] | ||
| annotation = self.annotations[nnidx] | ||
| self.draw_annotation(event.inaxes, x, y, annotation) | ||
| for link in self.links: | ||
| link.draw_specific_annotation(annotation) | ||
|
|
||
| def draw_annotation(self, axis, x, y, annotation): | ||
| """Draw the annotation on the plot.""" | ||
| if (x, y) in self.drawn_annotations: | ||
| markers = self.drawn_annotations[(x, y)] | ||
| for m in markers: | ||
| m.set_visible(not m.get_visible()) | ||
| plt.axes(self.axis) | ||
| self.axis.figure.canvas.draw() | ||
| else: | ||
| t = axis.text(x, y, "(%3.2f, %3.2f) - %s" % (x, y, annotation), ) | ||
| self.drawn_annotations[(x, y)] = [t] | ||
| plt.axes(self.axis) | ||
| self.axis.figure.canvas.draw() | ||
|
|
||
| def drawSpecificAnnote(self, annote): | ||
| annotesToDraw = [(x,y,a) for x,y,a in self.data if a==annote] | ||
| for x,y,a in annotesToDraw: | ||
| self.drawAnnote(self.axis, x, y, a) | ||
| def draw_specific_annotation(self, annotation): | ||
| to_draw = [(x, y, a) | ||
| for (x, y), a in zip(self.points, self.annotations) | ||
| if a == annotation] | ||
| for x, y, a in to_draw: | ||
| self.draw_annotation(self.axis, x, y, a) |
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| @@ -0,0 +1,3 @@ | ||
| 1 0 3 0 | ||
| 1 0 0 4 | ||
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| @@ -0,0 +1,3 @@ | ||
| 0.1 0.6 0.2 0.8 | ||
| 0.3 1.0 0.8 0.2 | ||
| 0.8 0.0 1.0 0.4 |
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| 1 1 1 1 2 | ||
| 1 1 1 1 2 | ||
| 1 1 1 1 2 |
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| @@ -0,0 +1,3 @@ | ||
| 0. 0. 0. 1. 1. | ||
| 0. 5. 5. 1. 1. | ||
| .9 0. 0. 1. 1. |
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