Chaco Step-by-Step

Chaco Step-by-Step

• 1.
  Chaco step-by-step July 17, 2009 Monday, February 22, 2010
• 2.
  http://www.enthought.com/ Monday, February 22,2010
• 3.
  Enthought Python Distribution(EPD) MORE THAN FIFTY INTEGRATED PACKAGES • Python 2.5.2 • Database (MySQL, SQLLite, etc.) • Science (NumPy, SciPy, etc.) • Data Storage (HDF, NetCDF, etc.) • Plotting (Chaco, Matplotlib) • Networking (twisted) • Visualization (VTK, Mayavi) • User Interface (wxPython, Traits UI) • Multi-language Integration • Enthought Tool Suite (SWIG,Pyrex, f2py, weave) (Application Development Tools) Monday, February 22, 2010
• 4.
  Enthought Python Distribution(EPD) Monday, February 22, 2010
• 5.
  Enthought Python Distribution(EPD) Selections from our training courses including: explanations, demonstrations, and tips For subscribers to Enthought Python Distribution (EPD) Offered once a month for 60-90 minutes depending on questions Monday, February 22, 2010
• 6.
  Enthought Training Courses Python Basics, NumPy, SciPy, Matplotlib, Traits, TraitsUI, Chaco… Monday, February 22, 2010
• 7.
  Upcoming Training Classes September 21 – 25, 2009 Introduction to Scientific Computing with Python Austin, Texas October 19 – 22, 2009 Python for Science, Eng., and Financial Analysis Silicon Valley, California November 9 – 12, 2009 Python for Science, Eng., and Financial Analysis Chicago, Illinois December 7 – 11, 2009 Introduction to Scientific Computing with Python Austin, Texas http://www.enthought.com/training/ Monday, February 22, 2010
• 8.
  Enthought Tool Suite http://code.enthought.com/ Monday, February 22, 2010
• 9.
  Rich Client App(Geophysics, Finance, Etc) Testing Framework Scripting Interface Data Display Equipment Compliance Scientific Database Chaco UI Interface Tools Algorithms Access Plotting Elements Monday, February 22, 2010
• 10.
  Monday, February 22,2010
• 11.
  Chaco: Interactive Graphics Monday,February 22, 2010
• 12.
  Introduction • Chaco is a plotting application toolkit • You can build simple, static plots Monday, February 22, 2010
• 13.
  Introduction • Chaco is a plotting application toolkit • You can build simple, static plots • You can also build rich, interactive visualizations: Monday, February 22, 2010
• 14.
  “Script-oriented” Plotting • from numpy import * • from enthought.chaco.shell import * • x = linspace(-2*pi, 2*pi, 100) • y = sin(x) • plot(x, y, 'r-') • title('First plot') • ytitle('sin(x)') • show() Monday, February 22, 2010
• 15.
  “Application-oriented” Plotting • class LinePlot(HasTraits): • plot = Instance(Plot) • traits_view = View( • Item('plot',editor=ComponentEditor(), • show_label=False), • width=500, height=500, • resizable=True, • title="Chaco Plot") • def __init__(self): • x = linspace(-14, 14, 100) • y = sin(x) * x**3 • plotdata = ArrayPlotData(x = x, y = y) • plot = Plot(plotdata) • plot.plot(("x", "y"), type="line", • color="blue") • plot.title = "sin(x) * x^3" • self.plot = plot • if __name__ == "__main__": • LinePlot().configure_traits() Monday, February 22, 2010
• 16.
  First Plot class LinePlot(HasTraits): plot = Instance(Plot) traits_view = View( Item('plot', editor=ComponentEditor(), show_label=False), width=500, height=500, resizable=True, title="Chaco Plot") def __init__(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.title = "sin(x) * x^3" self.plot = plot Monday, February 22, 2010
• 17.
  First Plot class LinePlot(HasTraits): plot = Instance(Plot) traits_view = View( Item('plot',editor=ComponentEditor(), show_label=False), width=500, height=500, resizable=True, title="Chaco Plot") def __init__(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.title = "sin(x) * x^3" self.plot = plot Monday, February 22, 2010
• 18.
  First Plot class LinePlot(HasTraits): plot = Instance(Plot) traits_view = View( Item('plot',editor=ComponentEditor(), show_label=False), width=500, height=500, resizable=True, title="Chaco Plot") def __init__(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.title = "sin(x) * x^3" self.plot = plot Monday, February 22, 2010
• 19.
  First Plot class LinePlot(HasTraits): plot = Instance(Plot) traits_view = View( Item('plot',editor=ComponentEditor(), show_label=False), width=500, height=500, resizable=True, title="Chaco Plot") def __init__(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.title = "sin(x) * x^3" self.plot = plot Monday, February 22, 2010
• 20.
  First Plot class LinePlot(HasTraits): plot = Instance(Plot) traits_view = View( Item('plot',editor=ComponentEditor(), show_label=False), width=500, height=500, resizable=True, title="Chaco Plot") def __init__(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.title = "sin(x) * x^3" self.plot = plot Monday, February 22, 2010
• 21.
  First Plot class LinePlot(HasTraits): plot = Instance(Plot) traits_view = View( Item('plot',editor=ComponentEditor(), show_label=False), width=500, height=500, resizable=True, title="Chaco Plot") def __init__(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.title = "sin(x) * x^3" self.plot = plot Monday, February 22, 2010
• 22.
  First Plot class LinePlot(HasTraits): plot = Instance(Plot) traits_view = View( Item('plot',editor=ComponentEditor(), show_label=False), width=500, height=500, resizable=True, title="Chaco Plot") def __init__(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.title = "sin(x) * x^3" self.plot = plot Monday, February 22, 2010
• 23.
  First Plot Finally, do something when this script is executed: if __name__ == "__main__": LinePlot().configure_traits() Monday, February 22, 2010
• 24.
  Scatter Plot • class ScatterPlot(HasTraits): • plot = Instance(Plot) • traits_view = View( • Item('plot', editor=ComponentEditor(), • show_label=False), • width=500, height=500, • resizable=True, • title="Chaco Plot") • def __init__(self): • x = linspace(-14, 14, 100) • y = sin(x) * x**3 • plotdata = ArrayPlotData(x = x, y = y) • plot = Plot(plotdata) • plot.plot(("x", "y"), type="scatter", • color="blue") • self.plot = plot • if __name__ == "__main__": Monday, February 22, 2010
• 25.
  Image Plot • class ImagePlot(HasTraits): • plot = Instance(Plot) • traits_view = View( • Item('plot', editor=ComponentEditor(), • show_label=False), • width=500, height=500, • resizable=True, • title=”Chaco Plot”) • def __init__(self): • x = linspace(0, 10, 50) • y = linspace(0, 5, 50) • xgrid, ygrid = meshgrid(x, y) • z = exp(-(xgrid*xgrid+ygrid*ygrid)/100) • plotdata = ArrayPlotData(imagedata = z) • plot = Plot(plotdata) • plot.img_plot("imagedata", xbounds=x, • ybounds=y, colormap=jet) • self.plot = plot • if __name__ == "__main__": • ImagePlot().configure_traits() Monday, February 22, 2010
• 26.
  A Slight Modification • class OverlappingPlot(HasTraits): • plot = Instance(Plot) • traits_view = View( • Item('plot',editor=ComponentEditor(), • show_label=False), • width=500, height=500, • resizable=True, • title=”Chaco Plot”) • def __init__(self): • x = linspace(-14, 14, 100) • y = x/2 * sin(x) • y2 = cos(x) • plotdata = ArrayPlotData(x=x,y=y,y2=y2) • plot = Plot(plotdata) • plot.plot(("x", "y"), type="scatter", • color="blue") • plot.plot(("x", "y2"), type="line", • color="red") • self.plot = plot • if __name__ == "__main__": • OverlappingPlot().configure_traits() Monday, February 22, 2010
• 27.
  Editing Plot Traits • from enthought.traits.api import Int • from enthought.enable.api import ColorTrait • from enthought.chaco.api import marker_trait • class ScatterPlotTraits(HasTraits): • plot = Instance(Plot) • color = ColorTrait("blue") • marker = marker_trait • marker_size = Int(4) Monday, February 22, 2010
• 28.
  Editing Plot Traits • from enthought.traits.api import Int • from enthought.enable.api import ColorTrait • from enthought.chaco.api import marker_trait • class ScatterPlotTraits(HasTraits): • plot = Instance(Plot) • color = ColorTrait("blue") • marker = marker_trait • marker_size = Int(4) • traits_view = View( • Group( • Item('color', label="Color", style="custom"), • Item('marker', label="Marker"), • Item('marker_size', label="Size"), • Item('plot', editor=ComponentEditor(), • show_label=False), • orientation = "vertical" • ), • width=500, height=500, • resizable=True, • title="Chaco Plot") Monday, February 22, 2010
• 29.
  Editing Plot Traits • def __init__(self): • • x = linspace(-14, 14, 100) • y = sin(x) * x**3 • plotdata = ArrayPlotData(x = x, y = y) • • plot = Plot(plotdata) • • self.renderer = plot.plot(("x", "y"), type="scatter", • color="blue")[0] • self.plot = plot Monday, February 22, 2010
• 30.
  Editing Plot Traits • def __init__(self): • • x = linspace(-14, 14, 100) • y = sin(x) * x**3 • plotdata = ArrayPlotData(x = x, y = y) • • plot = Plot(plotdata) • • self.renderer = plot.plot(("x", "y"), type="scatter", • color="blue")[0] • self.plot = plot • def _color_changed(self): • self.renderer.color = self.color Monday, February 22, 2010
• 31.
  Editing Plot Traits • def __init__(self): • • x = linspace(-14, 14, 100) • y = sin(x) * x**3 • plotdata = ArrayPlotData(x = x, y = y) • • plot = Plot(plotdata) • • self.renderer = plot.plot(("x", "y"), type="scatter", • color="blue")[0] • self.plot = plot • def _color_changed(self): • self.renderer.color = self.color • def _marker_changed(self): • self.renderer.marker = self.marker • def _marker_size_changed(self): • self.renderer.marker_size = self.marker_size Monday, February 22, 2010
• 32.
  Editing Plot Traits Monday,February 22, 2010
• 33.
  Tools from enthought.chaco.tools.api import PanTool, ZoomTool, DragZoom class ToolsExample(HasTraits): plot = Instance(Plot) traits_view = View( Item('plot',editor=ComponentEditor(), show_label=False), width=500, height=500, resizable=True, title="Chaco Plot") def __init__(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.tools.append(PanTool(plot)) plot.tools.append(ZoomTool(plot)) plot.tools.append(DragZoom(plot, drag_button="right")) self.plot = plot Monday, February 22, 2010
• 34.
  Tool Chooser from enthought.traits.ui.api import CheckListEditor class ToolsExample(HasTraits): plot = Instance(Plot) tools = List(editor=CheckListEditor(values = ["PanTool", "SimpleZoom", "DragZoom"])) Monday, February 22, 2010
• 35.
  Tool Chooser from enthought.traits.ui.api import CheckListEditor class ToolsExample(HasTraits): plot = Instance(Plot) tools = List(editor=CheckListEditor(values = ["PanTool", "SimpleZoom", "DragZoom"])) def __init__(self): x = linspace(-14, 14, 500) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="line", color="blue") plot.tools.append(PanTool(plot)) plot.tools.append(ZoomTool(plot)) plot.tools.append(DragZoom(plot, drag_button="right")) self.plot = plot Monday, February 22, 2010
• 36.
  Tool Chooser def _tools_changed(self): classes = [eval(class_name) for class_name in self.tools] for tool in self.plot.tools: if tool.__class__ not in classes: self.plot.tools.remove(tool) else: classes.remove(tool.__class__) for cls in classes: self.plot.tools.append(cls(self.plot)) return Monday, February 22, 2010
• 37.
  Tool Chooser def _tools_changed(self): classes = [eval(class_name) for class_name in self.tools] for tool in self.plot.tools: if tool.__class__ not in classes: self.plot.tools.remove(tool) else: classes.remove(tool.__class__) for cls in classes: self.plot.tools.append(cls(self.plot)) return Monday, February 22, 2010
• 38.
  Tool Chooser def _tools_changed(self): classes = [eval(class_name) for class_name in self.tools] for tool in self.plot.tools: if tool.__class__ not in classes: self.plot.tools.remove(tool) else: classes.remove(tool.__class__) for cls in classes: self.plot.tools.append(cls(self.plot)) return Monday, February 22, 2010
• 39.
  Tool Chooser def _tools_changed(self): classes = [eval(class_name) for class_name in self.tools] for tool in self.plot.tools: if tool.__class__ not in classes: self.plot.tools.remove(tool) else: classes.remove(tool.__class__) for cls in classes: self.plot.tools.append(cls(self.plot)) return Monday, February 22, 2010
• 40.
  Tool Chooser def _tools_changed(self): classes = [eval(class_name) for class_name in self.tools] for tool in self.plot.tools: if tool.__class__ not in classes: self.plot.tools.remove(tool) else: classes.remove(tool.__class__) for cls in classes: self.plot.tools.append(cls(self.plot)) return Monday, February 22, 2010
• 41.
  Tool Chooser def _tools_changed(self): classes = [eval(class_name) for class_name in self.tools] for tool in self.plot.tools: if tool.__class__ not in classes: self.plot.tools.remove(tool) else: classes.remove(tool.__class__) for cls in classes: self.plot.tools.append(cls(self.plot)) return Monday, February 22, 2010
• 42.
  Tool Chooser def _tools_changed(self): classes = [eval(class_name) for class_name in self.tools] for tool in self.plot.tools: if tool.__class__ not in classes: self.plot.tools.remove(tool) else: classes.remove(tool.__class__) for cls in classes: self.plot.tools.append(cls(self.plot)) return Monday, February 22, 2010
• 43.
  Tool Chooser class ToolChooserExample(HasTraits): plot = Instance(Plot) tools = List(editor=CheckListEditor(values = ["PanTool", "ZoomTool", "DragZoom"])) traits_view = View(Item("tools", label="Tools", style="custom"), Item('plot', editor=ComponentEditor(), show_label=False), width=800, height=600, resizable=True, title="Tool Chooser") def __init__(self): ... def _tools_changed(self): classes = [eval(class_name) for class_name in self.tools] # Remove all tools that are not in the enabled list in self.tools for tool in self.plot.tools: if tool.__class__ not in classes: self.plot.tools.remove(tool) else: classes.remove(tool.__class__) # Create new instances of tools for the remaining tool classes for cls in classes: self.plot.tools.append(cls(self.plot)) return Monday, February 22, 2010
• 44.
  Tool Chooser Monday, February22, 2010
• 45.
  Writing a CustomTool from enthought.enable.api import BaseTool class CustomTool(BaseTool): def normal_mouse_move(self, event): print "Screen point:", event.x, event.y class ScatterPlot(HasTraits): plot = Instance(Plot) traits_view = View(Item('plot', editor=ComponentEditor(), show_label=False), width=800, height=600, resizable=True, title="Custom Tool") def _plot_default(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="scatter", color="blue") plot.tools.append(CustomTool(plot)) return plot Monday, February 22, 2010
• 46.
  Writing a CustomTool from enthought.enable.api import BaseTool class CustomTool(BaseTool): def normal_mouse_move(self, event): print "Screen point:", event.x, event.y class ScatterPlot(HasTraits): plot = Instance(Plot) traits_view = View(Item('plot', editor=ComponentEditor(), show_label=False), width=800, height=600, resizable=True, title="Custom Tool") def _plot_default(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="scatter", color="blue") plot.tools.append(CustomTool(plot)) return plot Monday, February 22, 2010
• 47.
  Writing a CustomTool from enthought.enable.api import BaseTool class CustomTool(BaseTool): def normal_mouse_move(self, event): print "Screen point:", event.x, event.y class ScatterPlot(HasTraits): plot = Instance(Plot) traits_view = View(Item('plot', editor=ComponentEditor(), show_label=False), width=800, height=600, resizable=True, title=”Custom Tool”) def _plot_default(self): x = linspace(-14, 14, 100) y = sin(x) * x**3 plotdata = ArrayPlotData(x = x, y = y) plot = Plot(plotdata) plot.plot(("x", "y"), type="scatter", color="blue") plot.tools.append(CustomTool(plot)) return plot Monday, February 22, 2010
• 48.
  Writing a CustomTool class CustomTool(BaseTool): def normal_mouse_move(self, event): print "Screen point:", event.x, event.y def normal_left_down(self, event): print "Mouse went down at", event.x, event.y def normal_left_up(self, event): print "Mouse went up at:", event.x, event.y Monday, February 22, 2010
• 49.
  Writing a CustomTool class CustomTool(BaseTool): event_state = Enum("normal", "mousedown") def normal_mouse_move(self, event): print "Screen:", event.x, event.y def normal_left_down(self, event): self.event_state = "mousedown" event.handled = True def mousedown_left_up(self, event): self.event_state = "normal" event.handled = True Monday, February 22, 2010
• 50.
  Writing a CustomTool class CustomTool(BaseTool): event_state = Enum("normal", "mousedown") def normal_mouse_move(self, event): print "Screen:", event.x, event.y def normal_left_down(self, event): self.event_state = "mousedown" event.handled = True def mousedown_mouse_move(self, event): print "Data:", self.component.map_data((event.x, event.y)) def mousedown_left_up(self, event): self.event_state = "normal" event.handled = True Monday, February 22, 2010
• 51.
  Additional Tutorial Examples Custom Overlay Monday, February 22, 2010
• 52.
  Additional Tutorial Examples Custom Overlay with Dataspace Option Monday, February 22, 2010
• 53.
  More information • Web page: http://code.enthought.com/projects/chaco • Wiki: https://svn.enthought.com/enthought/wiki/ChacoProject • Gallery: http://code.enthought.com/projects/chaco/gallery.php • Mailing lists: [email protected], [email protected] Monday, February 22, 2010