error bar and arrays (tuple way to solve a problem)

Community matplotlib-users
1

Thanks to all for the replies :slight_smile:
I used a tuple to solve the problem because I dind't manage to reshape my array since it comes from a previous slicing, but not it seems to work.
Is it the same problem because this doesn't work ?

from pylab import *
y=array([[ 1.02], [ 1.05], [ 1.03], [ 0.99], [ 0.97], [ 0.95], [ 1. ], [ 0.93], [ 1. ], [ 1. ], [ 0.98], [ 0.98], [ 0.94], [ 0.94], [ 0.96], [ 0.92], [ 1.01], [ 0.96], [ 0.99], [ 0.96], [ 1.03], [ 0.91], [ 0.99], [ 0.98], [ 1. ], [ 0.98], [ 0.96]])
pred=array([[ 1.02875 ], [ 1.03125 ], [ 1.02291667], [ 0.99541667], [ 0.96458333], [ 0.93625 ], [ 0.99375 ], [ 0.93708333], [ 1.00125 ], [ 1.01875 ], [ 0.98541667], [ 0.97291667],
       [ 0.94708333], [ 0.93458333], [ 0.96625 ], [ 0.92375 ], [ 1.005 ], [ 0.965 ], [ 0.98333333], [ 0.96666667], [ 1.02666667], [ 0.91333333], [ 1.005 ], [ 0.965 ], [ 0.98 ],
       [ 0.98 ], [ 0.98 ]])
figure(2)
r=27
p2=plot(y,pred,'bo')
t1=arange(1,r+1)
for t1 in arange(1,r+1):
   text(y[t1-1], pred[t1-1], str(t1))
show()
###### End Plot 2

and gives this error ??Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python24\lib\lib-tk\Tkinter.py", line 1345, in __call__
    return self.func(*args)
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 151, in resize
    self.show()
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 154, in draw
    FigureCanvasAgg.draw(self)
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_agg.py", line 392, in draw
    self.figure.draw(renderer)
  File "C:\Python24\Lib\site-packages\matplotlib\figure.py", line 545, in draw
    for a in self.axes: a.draw(renderer)
  File "C:\Python24\Lib\site-packages\matplotlib\axes.py", line 1067, in draw
    a.draw(renderer)
  File "C:\Python24\Lib\site-packages\matplotlib\text.py", line 340, in draw
    bbox, info = self._get_layout(renderer)
  File "C:\Python24\Lib\site-packages\matplotlib\text.py", line 168, in _get_layout
    if self.cached.has_key(key): return self.cached[key]
TypeError: unhashable type

Thanks to all community :slight_smile:
Giorgio

2

Again, the problem with the sample you supply is that you are making 2-D arrays where what you need are 1-D arrays. Simply flattening y and pred before using them makes the script work fine, as attached. Or make them 1-D in the first place.

Eric

Giorgio Luciano wrote:

pytest.py (892 Bytes)

···

Thanks to all for the replies :slight_smile:
I used a tuple to solve the problem because I dind't manage to reshape my array since it comes from a previous slicing, but not it seems to work.
Is it the same problem because this doesn't work ?

from pylab import *
y=array([[ 1.02], [ 1.05], [ 1.03], [ 0.99], [ 0.97], [ 0.95], [ 1. ], [ 0.93], [ 1. ], [ 1. ], [ 0.98], [ 0.98], [ 0.94], [ 0.94], [ 0.96], [ 0.92], [ 1.01], [ 0.96], [ 0.99], [ 0.96], [ 1.03], [ 0.91], [ 0.99], [ 0.98], [ 1. ], [ 0.98], [ 0.96]])
pred=array([[ 1.02875 ], [ 1.03125 ], [ 1.02291667], [ 0.99541667], [ 0.96458333], [ 0.93625 ], [ 0.99375 ], [ 0.93708333], [ 1.00125 ], [ 1.01875 ], [ 0.98541667], [ 0.97291667],
       [ 0.94708333], [ 0.93458333], [ 0.96625 ], [ 0.92375 ], [ 1.005 ], [ 0.965 ], [ 0.98333333], [ 0.96666667], [ 1.02666667], [ 0.91333333], [ 1.005 ], [ 0.965 ], [ 0.98 ],
       [ 0.98 ], [ 0.98 ]])
figure(2)
r=27
p2=plot(y,pred,'bo')
t1=arange(1,r+1)
for t1 in arange(1,r+1):
   text(y[t1-1], pred[t1-1], str(t1))
show()
###### End Plot 2

and gives this error ??Exception in Tkinter callback
Traceback (most recent call last):
  File "C:\Python24\lib\lib-tk\Tkinter.py", line 1345, in __call__
    return self.func(*args)
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 151, in resize
    self.show()
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_tkagg.py", line 154, in draw
    FigureCanvasAgg.draw(self)
  File "C:\Python24\Lib\site-packages\matplotlib\backends\backend_agg.py", line 392, in draw
    self.figure.draw(renderer)
  File "C:\Python24\Lib\site-packages\matplotlib\figure.py", line 545, in draw
    for a in self.axes: a.draw(renderer)
  File "C:\Python24\Lib\site-packages\matplotlib\axes.py", line 1067, in draw
    a.draw(renderer)
  File "C:\Python24\Lib\site-packages\matplotlib\text.py", line 340, in draw
    bbox, info = self._get_layout(renderer)
  File "C:\Python24\Lib\site-packages\matplotlib\text.py", line 168, in _get_layout
    if self.cached.has_key(key): return self.cached[key]
TypeError: unhashable type

Thanks to all community :slight_smile:
Giorgio