chaco.array_plot_data module¶
Defines ArrayPlotData.
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class
chaco.array_plot_data.ArrayPlotData(*data, **kw)¶ Bases:
chaco.abstract_plot_data.AbstractPlotDataA PlotData implementation class that handles a list of Numpy arrays (or a 2-D Numpy array).
By default, it doesn’t allow its input data to be modified by downstream Chaco components or interactors.
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arrays= Dict¶ Map of names to arrays. Although there is no restriction on the array dimensions, each array must correspond to a single plot item; that is, a single name must not map to a multi-dimensional array unless the array is being used for an image plot or for something that can handle multi-dimensional input data.
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del_data(name)¶ Deletes the array specified by name, or raises a KeyError if the named array does not exist.
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get_data(name)¶ Returns the array associated with name.
Implements AbstractDataSource.
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list_data()¶ Returns a list of the names of the arrays managed by this instance.
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set_data(name, new_data, generate_name=False)¶ Sets the specified array as the value for either the specified name or a generated name.
If the instance’s writable attribute is True, then this method sets the data associated with the given name to the new value, otherwise it does nothing.
- Parameters
name (string) – The name of the array whose value is to be set.
new_data (array) – The array to set as the value of name.
generate_name (Boolean) – If True, a unique name of the form ‘seriesN’ is created for the array, and is used in place of name. The ‘N’ in ‘seriesN’ is one greater the largest N already used.
- Returns
- Return type
The name under which the array was set.
See also
update_dataUse if needing to set multiple ArrayPlotData entries at once, for example because new arrays’ dimensions change and updating one at a time would break an existing Plot.
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set_selection(name, selection)¶ Overrides AbstractPlotData to do nothing and not raise an error.
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update_data(*args, **kwargs)¶ Updates any number of arrays before triggering a data_changed event.
Useful to set multiple ArrayPlotData entries at once, for example because new arrays’ dimensions change and updating one at a time would break an existing Plot.
Note: Implements AbstractPlotData’s update_data() method. This method has the same signature as the dictionary update() method.
See also
set_dataSimpler interface to set only 1 entry at a time.
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writable= True¶ Consumers can write data to this object (overrides AbstractPlotData).
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