質問編集履歴
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試したことの追記
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@@ -31,6 +31,102 @@
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plt.show()
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```
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### 試したこと
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リストを使いたいのですが、まずはX軸とY軸を描画するために、
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以下のコードを実行しました。
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```python
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import matplotlib.pyplot as plt
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born_live = [('gunma', 'tokyo'), ('tochigi', 'hokkaido') , ('tokyo', 'tokyo'), ('nagano', 'nagano'), ('miyazaki', 'fukuoka')]
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# 都道府県のリスト作成
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pref = [d for d in set(sum(map(list, born_live), []))]
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x = ['hokkaido', 'gunma', 'tochigi', 'tokyo', 'nagano', 'miyazaki', 'fukuoka']
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y = ['hokkaido', 'gunma', 'tochigi', 'tokyo', 'nagano', 'miyazaki', 'fukuoka']
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plt.xticks(range(len(pref)), pref)
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plt.yticks(range(len(pref)), pref)
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plt.scatter(x,y)
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plt.show()
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```
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この時点で、入力したX軸・Y軸の要素の順番が異なるのですが、
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更に、以下のようにリストと同じようにプロットを打とうとしたところ、
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エラーが出力されてしまっている状態です。
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```python
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import matplotlib.pyplot as plt
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born_live = [('gunma', 'tokyo'), ('tochigi', 'hokkaido') , ('tokyo', 'tokyo'), ('nagano', 'nagano'), ('miyazaki', 'fukuoka')]
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# 都道府県のリスト作成
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pref = [d for d in set(sum(map(list, born_live), []))]
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x = ['hokkaido', 'gunma', 'tochigi', 'tokyo', 'nagano', 'miyazaki', 'fukuoka']
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y = [None, 'tokyo', 'hokkaido', 'tokyo', 'nagano', 'fukuoka', None]
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plt.xticks(range(len(pref)), pref)
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plt.yticks(range(len(pref)), pref)
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plt.scatter(x,y)
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plt.show()
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```
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エラー文
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```
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--------------------------------------------------------------------------
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ValueError Traceback (most recent call last)
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<ipython-input-4-457a837ce2d3> in <module>()
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11 plt.xticks(range(len(pref)), pref)
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12 plt.yticks(range(len(pref)), pref)
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---> 13 plt.scatter(x,y)
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14 plt.show()
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~/.pyenv/versions/anaconda3-5.0.1/lib/python3.6/site-packages/matplotlib/pyplot.py in scatter(x, y, s, c, marker, cmap, norm, vmin, vmax, alpha, linewidths, verts, edgecolors, hold, data, **kwargs)
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3355 vmin=vmin, vmax=vmax, alpha=alpha,
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3356 linewidths=linewidths, verts=verts,
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-> 3357 edgecolors=edgecolors, data=data, **kwargs)
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3358 finally:
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3359 ax._hold = washold
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~/.pyenv/versions/anaconda3-5.0.1/lib/python3.6/site-packages/matplotlib/__init__.py in inner(ax, *args, **kwargs)
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1708 warnings.warn(msg % (label_namer, func.__name__),
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1709 RuntimeWarning, stacklevel=2)
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-> 1710 return func(ax, *args, **kwargs)
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1711 pre_doc = inner.__doc__
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1712 if pre_doc is None:
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~/.pyenv/versions/anaconda3-5.0.1/lib/python3.6/site-packages/matplotlib/axes/_axes.py in scatter(self, x, y, s, c, marker, cmap, norm, vmin, vmax, alpha, linewidths, verts, edgecolors, **kwargs)
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4094 offsets=offsets,
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4095 transOffset=kwargs.pop('transform', self.transData),
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-> 4096 alpha=alpha
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4097 )
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4098 collection.set_transform(mtransforms.IdentityTransform())
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~/.pyenv/versions/anaconda3-5.0.1/lib/python3.6/site-packages/matplotlib/collections.py in __init__(self, paths, sizes, **kwargs)
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859 """
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860
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--> 861 Collection.__init__(self, **kwargs)
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862 self.set_paths(paths)
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863 self.set_sizes(sizes)
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~/.pyenv/versions/anaconda3-5.0.1/lib/python3.6/site-packages/matplotlib/collections.py in __init__(self, edgecolors, facecolors, linewidths, linestyles, antialiaseds, offsets, transOffset, norm, cmap, pickradius, hatch, urls, offset_position, zorder, **kwargs)
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147 self._uniform_offsets = None
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148 if offsets is not None:
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--> 149 offsets = np.asanyarray(offsets, float)
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150 # Broadcast (2,) -> (1, 2) but nothing else.
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151 if offsets.shape == (2,):
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~/.pyenv/versions/anaconda3-5.0.1/lib/python3.6/site-packages/numpy/core/numeric.py in asanyarray(a, dtype, order)
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581
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582 """
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--> 583 return array(a, dtype, copy=False, order=order, subok=True)
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584
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585
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ValueError: could not convert string to float: 'fukuoka'
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```
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### 補足情報（FW/ツールのバージョンなど）
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35
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Python 3.6
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36
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Jupyter notebook 5.0.0
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